IBC2700 Integrated Boiler Controller - · PDF file4.6.1 Probe in Boiler ... This instrument...

HA028177 Feb-04

IBC2700 Boiler Controller

Installation and Operating Instructions

1. Safety and EMC Information

2. Introduction

3. Installation

4. Wiring

5. Operation

6. Access Levals

7. Alarms

8. Level Control

9. TDS Control

10. Blowdown

11. Steam Warm-up

12. Real Time Clock

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Boiler Controller 4028250

Part No HA028177 IM-P402-122 AB Issue 3.0 Mar-04 1-1

1. SAFETY AND EMC INFORMATION............................ 3 1.1 Installation Requirements for EMC ...................................................... 6

2. INTRODUCTION.......................................................... 7

3. INSTALLATION ........................................................... 8 3.1 Positioning ............................................................................................... 8 3.2 Outline Dimensions Model IBC2700 ..................................................... 8 3.3 Panel Mounting the Controller .............................................................. 9 3.4 Unplugging and Plugging in the Controller.......................................... 9

4. WIRING...................................................................... 10 4.1 Electrical Connections .......................................................................... 10 4.2 Hardware Configuration...................................................................... 10 4.3 General Wiring Diagram...................................................................... 11 4.4 Power Supply to the Controller ........................................................... 13 4.5 Level Probe Wiring ............................................................................... 14 4.5.1 Probe Screen Connections .................................................................. 14 4.5.2 Level Probe Wiring: UL Version........................................................ 15 4.5.3 Level Control Output .......................................................................... 16 4.6 TDS Probe Wiring................................................................................. 17 4.6.1 Probe in Boiler – CP32....................................................................... 17 4.6.2 TDS Probe Screen Connections.......................................................... 17 4.6.3 CP10/CP30 Wiring ............................................................................. 18 4.7 TDS Control Output Wiring ................................................................ 19 4.8 Blowdown Wiring ................................................................................. 19 4.9 Blowdown Interlock Wiring................................................................. 20 4.10 Valve Limit Switch Wiring .............................................................. 20 4.11 Burner On Input Wiring .................................................................. 21 4.12 Main Steam Warm-up Wiring......................................................... 21 4.13 Digital Communications Wiring...................................................... 22

5. OPERATION .............................................................. 23 5.1 To Change Setpoints ............................................................................. 23 5.2 To Select Further Operator Displays .................................................. 24 5.2.1 Level Control Page ............................................................................. 24 5.2.2 Level Trend Chart............................................................................... 24 5.2.3 TDS..................................................................................................... 25 5.2.4 TDS Trend Chart ................................................................................ 25

6. ACCESS LEVELS ..................................................... 26

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4028250 Boiler Controller

1-2 Part No HA028177 IM-P402-122 AB Issue 3.0 Mar-04

6.1 To Select Access Level 2 ....................................................................... 26 6.2 To Adjust Parameter Values................................................................ 27

7. ALARMS ....................................................................28 7.1 Alarm Types .......................................................................................... 29 7.1.1 Auto Latching ..................................................................................... 29 7.1.2 Hysteresis ........................................................................................... 29 7.1.3 Delay .................................................................................................. 29 7.2 ALARM setup ....................................................................................... 30 7.2.1 Example: To Set up Low and High Level Alarms ............................. 30

8. LEVEL CONTROL .....................................................31 8.1 LEVEL Setup Parameters.................................................................... 31 8.2 Example: To Calibrate Boiler Level................................................... 32 8.2.1 To Calibrate the Low Level Point....................................................... 32 8.2.2 To Calibrate the High Level Point...................................................... 33

9. TDS CONTROL .........................................................34 9.1 TDS Calibration.................................................................................... 34 9.1.1 Example: To Calibrate TDS Level (Probe in boiler) ......................... 35 9.2 TDS Setup.............................................................................................. 36 9.2.1 Example: To Calibrate TDS Level (Probe in blowdown line)........... 38

10. BLOWDOWN.............................................................39 10.1 BLOWDOWN Setup ........................................................................ 39 10.1.1 Example: To Perform a Boiler Blowdown ........................................ 40 10.1.2 Blowdown Sequence .......................................................................... 41

11. STEAM WARM UP.....................................................42

12. REAL TIME CLOCK ..................................................43 12.1.1 Example: To Set the Real Time Clock .............................................. 43

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IBC2700 Boiler Controller 1. SAFETY AND EMC INFORMATION This controller is intended for industrial control applications when it will meet the requirements of the European Directives on Safety and EMC. Use in other applications, or failure to observe the installation instructions of this handbook may impair safety or EMC. The installer must ensure the safety and EMC of any particular installation.

Safety This controller complies with the European Low Voltage Directive 73/23/EEC, amended by 93/68/EEC, by the application of the safety standard EN 61010.

Electromagnetic compatibility This controller conforms with the essential protection requirements of the EMC Directive 89/336/EEC, amended by 93/68/EEC, by the application of a Technical Construction File. This instrument satisfies the general requirements of the industrial environment defined in EN 50081-2 and EN 50082-2. For more information on product compliance refer to the Technical Construction File.

GENERAL The information contained in this manual is subject to change without notice. While every effort has been made to ensure the accuracy of the information, your supplier shall not be held liable for errors contained herein.

Unpacking and storage The packaging should contain an instrument mounted in its sleeve, two mounting brackets for panel installation and this operating book. Certain ranges are supplied with an input adapter. If on receipt, the packaging or the instrument are damaged, do not install the product but contact Spirax Sarco. If the instrument is to be stored before use, protect from humidity and dust in an ambient temperature range of -30oC to +75oC.

SERVICE AND REPAIR This controller has no user serviceable parts. Contact Spirax Sarco for repair.

Caution: Charged capacitors Before removing an instrument from its sleeve, disconnect the supply and wait at least two minutes to allow capacitors to discharge. It may be convenient to partially withdraw the instrument from the sleeve, then pause before completing the removal. In any case, avoid touching the exposed electronics of an instrument when withdrawing it from the sleeve. Failure to observe these precautions may cause damage to components of the instrument or some discomfort to the user.

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Electrostatic discharge precautions When the controller is removed from its sleeve, some of the exposed electronic components are vulnerable to damage by electrostatic discharge from someone handling the controller. To avoid this, before handling the unplugged controller discharge yourself to ground.

Cleaning Do not use water or water based products to clean labels or they will become illegible. Isopropyl alcohol may be used to clean labels. A mild soap solution may be used to clean other exterior surfaces of the product.

INSTALLATION SAFETY REQUIREMENTS

Safety Symbols Various symbols are used on the instrument, they have the following meaning:

Caution, (refer to the accompanying documents)

Functional earth (ground) terminal!

The functional earth connection is not required for safety purposes but is used to ground RFI filters. ☺☺☺☺ Helpful hints or information

Personnel Installation must only be carried out by qualified personnel.

Enclosure of live parts To prevent hands or metal tools touching parts that may be electrically live, the controller must be installed in an enclosure.

Wiring It is important to connect the controller in accordance with the wiring data given in this handbook. Take particular care not to connect AC supplies to the low voltage sensor input or other low level inputs and outputs. Only use copper conductors for connections, (except thermocouple). Ensure that the wiring of installations comply with all local wiring regulations. For example in the in the UK, use the latest version of the IEE wiring regulations, (BS7671). In the USA, use NEC Class 1 wiring methods.

Power Isolation The installation must include a power isolating switch or circuit breaker that disconnects all current carrying conductors. The device should be mounted in close proximity to the controller, within easy reach of the operator and marked as the disconnecting device for the instrument.

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Earth leakage current Due to RFI Filtering there is an earth leakage current of less than 0.5mA. This may affect the design of an installation of multiple controllers protected by Residual Current Device, (RCD) or Ground Fault Detector, (GFD) type circuit breakers.

Overcurrent protection To protect the internal PCB tracking within the controller against excess currents, the AC power supply to the controller and power outputs must be wired through the fuse or circuit breaker specified in the technical specification.

Voltage rating The maximum continuous voltage applied between any connection to ground must not exceed 264Vac. The controller should not be wired to a three phase supply with an unearthed star connection. Under fault conditions such a supply could rise above 264Vac with respect to ground and the product would not be safe. Voltage transients across the power supply connections, and between the power supply and ground, must not exceed 2.5kV. Where occasional voltage transients over 2.5kV are expected or measured, the power installation to both the instrument supply and load circuits should include a transient limiting device. These units will typically include gas discharge tubes and metal oxide varistors that limit and control voltage transients on the supply line due to lightning strikes or inductive load switching. Devices are available in a range of energy ratings and should be selected to suit conditions at the installation. Conductive pollution Electrically conductive pollution must be excluded from the cabinet in which the controller is mounted. For example, carbon dust is a form of electrically conductive pollution. To secure a suitable atmosphere, install an air filter to the air intake of the cabinet. Where condensation is likely, for example at low temperatures, include a thermostatically controlled heater in the cabinet. Arch

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1.1 Installation Requirements for EMC To ensure compliance with the European EMC directive certain installation precautions are necessary as follows: • When using relay outputs it may be necessary to fit a filter suitable for suppressing the

conducted emissions. The filter requirements will depend on the type of load. For typical applications we recommend Schaffner FN321 or FN612.

• If the unit is used in table top equipment which is plugged into a standard power socket, then it is likely that compliance to the commercial and light industrial emissions standard is required. In this case to meet the conducted emissions requirement, a suitable mains filter should be installed. We recommend Schaffner types FN321 and FN612.

Routing of wires To minimise the pick-up of electrical noise, the low voltage DC connections and the sensor input wiring should be routed away from high-current power cables. Where it is impractical to do this, use shielded cables with the shield grounded at both ends. In general keep cable lengths to a minimum.

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2. INTRODUCTION The IBC2700 Boiler Controller is a panel mounted instrument used to:- 1. To control the level of the liquid in the boiler and provide alarms if the upper or lower

levels are exceeded. 2. Monitor the conductivity of liquids and to control TDS (Total Dissolved Solids) levels

in a boiler system. 3. To provide a boiler blowdown sequence using a valve or condensate dump valve. 4. Control steam mains warm up The front panel has a multi-line electro-luminescent display showing the process conditions found in boiler systems. Push-buttons allow different displays to be shown and to select, view and change parameters or settings. A Pt100 temperature sensor may be connected to the controller to provide temperature compensation for TDS measurement. This is recommended if the boiler is working at varying pressures, or for other applications such as condensate monitoring or coil boilers, where the temperature may vary. If a temperature probe is not fitted the controller defaults to a temperature of 184oC at a pressure of 10Bar. This value is adjustable by the user. ☺☺☺☺ When this symbol appears in this handbook it indicates a useful tip or short cut.

Figure 2-1: Overview Display

LEVEL[%]

50 AUT SP1 0.0%

0 TDS[PPM]

434

AUT SP1 0 0%

BOILER OVERVIEW

LEVEL[%] 60 AUT SP1 0.0% 50

TDS[PPM] 2500

AUT SP1 0.0% 2500

PAGE

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3. INSTALLATION

3.1 Positioning The controller can be mounted vertically or on a sloping panel of maximum thickness 15mm (0.6in). Adequate access space must be available at the rear of the instrument panel for wiring and servicing purposes. The outline dimensions are shown in figure 3-1. Take care not to cover ventilation holes in the top, bottom and sides of the instrument. Before proceeding please read Appendix B ‘Safety and EMC Information’.

3.2 Outline Dimensions Model IBC2700

Figure 3-1: Outline Dimensions

Front Panel Height 96mm (3.78in)

Overall depth behind panel 150mm (5.91in) Front panel

width 96mm (3.78in)

Panel thickness up to 12mm, 0.5in.

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3.3 Panel Mounting the Controller

1. Prepare the panel cut-out to the size shown in Figure 3-2. Ensure that there is sufficient spacing between instruments as shown by the minimum dimensions given in Figure 3-2. Ensure also that the controller is not mounted close to any device which is likely to produce a significant amount of heat which may affect the performance of the controller.

2. Insert the controller through the panel cut-out.

3. Spring the upper and lower panel retaining clips into place. Secure the controller in position by holding it level and pushing both retaining clips forward.

Note:- If the retaining clips subsequently need removing, in order to extract the controller from the control panel, they can be unhooked from the side with either your fingers or a screwdriver.

Figure 3-2: Panel Cut-out and Minimum Spacing Requirements

3.4 Unplugging and Plugging in the Controller If required, the controller can be unplugged from its sleeve by easing the latching ears outwards and pulling the controller forward out of the sleeve. When plugging the controller back into its sleeve, ensure that the latching ears click into place. It is recommended that the power to the controller is switched off when un-plugging or plugging the controller into its sleeve. This is to prevent premature wear on the controller connectors when current is flowing through them.

Panel cut-out

92 x 92 mm -0 +0.8

3.62 x 3.62 in -0 +0.03

Recommended minimum spacing of controllers

38mm (1.5in)

10mm (0.4in)

(Not to scale)

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4. WIRING

WARNING You must ensure that the controller is correctly configured for your application. Incorrect configuration could result in damage to the process being controlled, and/or personal injury. It is your responsibility, as the installer, to ensure that the configuration is correct.

☺☺☺☺ Before proceeding further, please read the Safety and EMC section.

4.1 Electrical Connections

All electrical connections are made to the screw terminals at the rear of the controller. They accept wire sizes from 0.5 to 1.5 mm2 (16 to 22 AWG) and should be tightened to a torque of 0.4Nm (3.5lbin). If you wish to use crimp connectors, the correct type is AMP part number 349262-1. The terminals are protected by a clear plastic hinged cover to prevent hands, or metal, making accidental contact with live wires.

4.2 Hardware Configuration The IBC2700 controller has a modular build and contains the following plug in modules:-

Module Terminals Function Part No 1 1A to 1D A dual relay output is supplied to control an

on/off level valve. Terminals 1A and 1B will control the valve and terminals 1C and 1D will provide power to drive the steam main warm up SSR

AH025246U002

1 1A and 1B A 4-20mA output is supplied to control the level control valve. 1A is +; 1B is -

AH025728U003

3 3A to 3D A dual output control module configured as:- Channel A - 24V probe clean power supply. This is limited to 15V using an external zener diode Channel C level probe power supply

AH027249U002

4 4A to 4D Dual relay output Channel A - TDS control output Channel C - Bottom blowdown relay output

AH025246U002

5 5A to 5B TDS probe input module AH027720U002 6 6A to 6B Dual relay output to switch 15Vdc to the probe

to perform probe clean. This is automatically timed and freezes the TDS PV during this period

AH025246U002

The following connection diagram is shown for the above configuration.

!

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4.3 General Wiring Diagram A general wiring diagram is shown below:- Note 1:- This diagram shows wiring for a level valve positioning motor. An option is available which interfaces with a 4-20mA level control valve. Wiring for this is shown in section 4.5.3.

Figure 4-1: Overall Wiring Diagram

TDS Control Relay O/P

Bottom Blowdown Relay O/P

Capacitance Probe

Level ValveRelay O/Ps See Note 1 below

Open Close

N

TDS Liquid Temperature I/P

CP32 terminal block TBK1

Pt-100

Screen.

Digital I/O Common

Valve Limit Switch I/P

Interlocks to other boiler controllers - Bottom Blowdown Inhibit (O/P & I/P)

Burner-ON I/P

To SSR - Steam Main Warm-up **

D1

DC

D2

D3

D5

D4

D7

D6

VH

V1

V-

V+

4B

4A

4C

4D

5B

5A

5D

5C

6A

6B

6D

6C

1B

1A

1C

1D

5B

5A

5D

5C

3A

3B

3D

3C

HB

HA

HC

HD

HF

HE

JB

JA

JC

JD

JF

JE

N

L

E

D8

E2

E1

AB

AA

AC

BA

BC

BB

L N

Earth

85 to 264Vac

Alarm Relay *

C O M M S 1

C O M M S 2

L

TDS Probe Input

15V Zener

Probe Clean Relays

Probe Clean PSU Level Probe PSU

Level Input (0 – 6Vdc)

Normal

Alarm

Controller fuse 2A type T

Valve fuse 2A type T

8 7 6 5 4 3 2 1

Driv

e

Ret

urn

Feed

back

Earth

Earth

feed

back

Sens

or ti

p

Driv

e tip

Conductivity Probe

1 2 3

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Notes:- * If inductive loads are used for the alarm then external snubbers need to be fitted ** External floating PSU required if steam warm-up valve is needed • Maximum cable length (probe to controller) 100 metres (328 ft) • All wiring materials and methods shall comply with EN and IEC standards where

applicable • Relays are shown in the power off position • Seven Digital I/O (terminals DC to D7) are configured as inputs or outputs • Inputs are logic (-1 to 35Vdc) or contact closure • Outputs are open collector requiring an external power supply. • The AA changeover relay (terminals AA to AC) is configured as a general alarm and is

rated 2A 264Vac resistive • Terminals marked 2A to 2D are reserved. No connections should be made to these

terminals • Terminals marked HA to HF are connections for optional RS232, RS485, or RS422

communications modules • Terminals marked JA to JF are connections for an optional slave communications module

or second communications port used to communicate with other instruments The modules fitted into the above two communications slots can be inter-changed

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4.4 Power Supply to the Controller • The supply may be 85 - 264Vac 50 or 60 Hz • Power supply terminals are marked L (Live), N (Neutral) and E (Earth) • Before connecting the instrument to the power line, make sure that the line voltage

corresponds to the description on the identification label • For supply connections use 16AWG or larger wires rated for at least 75oC • Use copper conductors only • The power supply input is not fuse protected. This should be provided externally • Relays must be connected to the same phase as the controller supply • Safety requirements for permanently connected equipment state:

o a switch or circuit breaker shall be included in the building installation o it shall be in close proximity to the equipment and within easy reach of

the operator o it shall be marked as the disconnecting device for the equipment

Note: a single switch or circuit breaker can drive more than one instrument

Figure 4-2: Controller Supply

Warning:- Take care that mains supplies are connected only to the power supply terminals (85 to 264Vac only), the fixed relay terminals or to relay modules. Under no circumstances should mains supplies be connected to any other terminals.

Live Neutral Ground

85 to 264Vac

Controller fuse 2A type T

L

N

E

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4.5 Level Probe Wiring The IBC2700 controller can accept a signal from a level probe or transmitter with voltage (0 - 6Vdc) interface. In some installations a PA20 pre-amplifier may be used with the level probe. A separate Installation and Maintenance Manual is available for this. Note: The probe must be long enough to sense over the complete level range. The controller compares the signal it receives from the level probe with a setpoint selected by the user. It then changes its output signal to control the level in the boiler.

Figure 4-3: Level Probe Input

4.5.1 Probe Screen Connections An earth current loop is created if a wire or screen is connected between two earth points which are different potential (voltage). The probe screen should only be connected to ground at one end. • For level, the pre-amplifier and controller screen should only be connected to the earth

at one end, i.e. at the PA20 earth terminal. The PA20 earth terminal is a functional earth rather than protective earth. • A protective earth provides protection from electric shock under a single fault condition.

This product has double insulation and, therefore, does not require a protective earth. • A functional earth is used in order for the product to operate. In this application, the

earth, (tank/boiler shell) is used as the common of the probe/pre-amplifier. It also provides a sink/drain for any electrical interference.

• Ensure that the screen of the level probe is not connected to terminal BC of the controller and to the earth terminal of the PA20.

Level Probe Power Supply

Level Input (0 – 6Vdc)

3C

3D

BA

BB

BC

-

Controller Terminals

+

-

+

Level Probe Links on preamplifier provide sensitivity selection – see preamplifier IMi

1 2 3

Screen

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4.5.2 Level Probe Wiring: UL Version The LP20 is a capacitance level probe which works in conjunction with a pre-amplifier type PA20. This gives an output of 0 – 6Vdc, and is connected directly to the high level analogue input terminals, BA & BB, of the controller.

Figure 4-4: Level Probe Wiring UL Version Note:- Screened high temperature, 3 core, 1mm2 (18 – 16 AWG) copper cable is required for the probe wiring. The maximum permitted length is 100 metres (328ft). Use cable with a suitable temperature rating for the installation such as Pirelli FP200 or Delta Crompton Firetuf OHLS for the standard version. Connect the screens as shown above.

Screen

3C

BA

BB

3D

1

2

3

Brown

Red

Orange

Black

Controller input

Termination box

Flying leads supplied with PA20 (approx 12”)

*

* See PA20 Installation and Maintenance Instructions for sensitivity selection

+

+

-

-

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4.5.3 Level Control Output 4.5.3.1 Valve Motor Drive Version

The IBC2700 controller is supplied with a dual relay output to open or close a level valve or pump. It also provides alarm indication if the water level is too high or too low. A single change over relay is configured as ‘new alarm’ and this may be used to alert the operator. See section 7. Figure 4-5: Level Control Output Connections Note: No feedback potentiometer is required in the actuator since the control algorithms calculate the position of the valve. 4.5.3.2 4-20mA Version

The IBC2700 controller is supplied with a 4-20mA output to provide a signal to open or close a level valve or control a variable speed pump system. The IBC2700 also provides alarm indication if the water level is too high or too low. A single change-over relay is configured as ‘new alarm’ and this may be used to alert the operator.

Level Valve Relay O/Ps

Open Close

N L Valve fuse 2A type T

1A

1B

1C

1D


1A

1B

1C

1D


+

- 4-20mA Output

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4.6 TDS Probe Wiring The maximum cable length for the probes is 100m (328ft). All cables must be of the same gauge.

4.6.1 Probe in Boiler – CP32 The probe requires 8 way screened cable. Caution: Do not connect any wires to the 5-way terminal block as it houses the very fine wiring from the probe which could easily become damaged in attempting to connect additional wires. * For the TDS probe cleaning, it is important that all the connections shown in the wiring diagram are made. Please note the requirement of a Zener dioide across terminals 3A and 3B. This Zener Diode is included in the IBC2700 box taped to the retaining clips.'

Figure 4-6: CP32 TDS Probe Wiring

4.6.2 TDS Probe Screen Connections Ensure that the screen is connected to the earth terminal of the TDS probe. An earth current loop is created if a wire or screen is connected between two earth points which are different potential (voltage). The probe screen should only be connected to ground at one end. • A protective earth provides protection from electric shock under a single fault condition.

This product has double insulation and, therefore, does not require a protective earth. • A functional earth is used in order for the product to operate. In this application, the

earth, (tank/boiler shell) is used as the common of the probe. It also provides a sink/drain for any electrical interference.

VI

V+

V-

1

2

3

4

5

6

7

8

Probe


CP32 terminal blockScreen

White

Red (or red with white tracer)

Red

5A

5B

5C

5D

6A

6B

6C

6D

* 15V Zener

3A

3B

Probe Clean Power Supply

Probe Clean Relays

TDS liquid temperature input Pt100

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4.6.3 CP10/CP30 Wiring For the CP10 in most applications the 1.25m (4ft) heat resisting probe cable will need to be extended using a junction box. If not, link terminals 1 to 2 and 3 to 4. Total maximum cable length 100m (328ft). Note: Whilst pairs of conductors are linked at the junction box, the four wire connection is required to compensate for voltage drop.

Figure 4-7: CP30 Probe (Probe in Boiler)

Figure 4-8: CP10 Wiring (Probe in Blowdown Line)

Screen

5A 5B 5C 5D

Plug tail for probe CP10 (see text)


Junction block if required (see text)

link link

CP10 Probe

1 2 3

Probe tip


5A 5B 5C 5D VI V+ V-

CP30 Terminal Block

Screen

Internal links Earthed internally to probe body

3-wire Pt100 (optional)

5A 5B 5C 5D


Terminal box

Screen

1 2 3

Probe tip

Internal links Earthed to probe body

Red Red Blk Blk

UL Version

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4.7 TDS Control Output Wiring TDS control normally operates an external relay connected to terminals 4A and 4B. When the TDS is high the relay is closed. Note: For switching currents greater than 2A additional external relays are required

Figure 4-9: TDS Control Output Connections

4.8 Blowdown Wiring Bottom blowdown is also controlled via an external relay connected to terminals 4C and 4D. When the blowdown is active the relay is closed. Note: For switching currents greater than 2A additional external relays are required

Figure 4-10: Blowdown Connections

4A

4B

4C

4D

L N

Relay

4A

4B

4C

4D

L N

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4.9 Blowdown Interlock Wiring Digital inputs and outputs are provided for interlocking up to eight boiler controllers. This is required to prevent other controllers from blowing down at the same time.

Figure 4-11: Blowdown Interlock Wiring

4.10 Valve Limit Switch Wiring The valve limit switch closes when the blowdown valve opens to provide confirmation that the blowdown sequence has started.

Figure 4-12: Blowdown Valve Limit Switch Wiring

Digital I/O Common

Valve Limit Switch I/P

DC

D3

D4

Digital I/O Common

Interlocks to eight boiler controllers and BT1000 timers in total

DC

D1

D2

DC

D1

D2 Digital I/O

Controller 1 Controller 2 11

12

BT1000

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4.11 Burner On Input Wiring This is a contact to confirm that the burner is ON. It is used to suspend blowdown and disable purge when the boiler is off. The contact is closed when the burner is on. If these contacts are not being used they must be replaced by a link.

Figure 4-13: Burner On Switch Wiring

4.12 Main Steam Warm-up Wiring The main steam warm-up is a modulating valve in which the open and close inputs are switched via two externally mounted SSRs (solid state relays). The SSRs are driven by digital outputs D6 and D7.

Figure 4-14: Main Steam Warm-up Valve Wiring

Digital I/O Common

Burner ON input contacts

DC

D3

D4

D5

DC

D6

D7

SSR1

SSR2

24Vdc supply (floating) + -

Main steam warm-up valve

Main steam warm-up valve supply

N L

+ -

+ -

Live Load

Live Load

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4.13 Digital Communications Wiring Digital Communications modules can be fitted in two positions in the IBC2700 controller. The connections being available on HA to HF and JA to JF depending on the position in which the module is fitted. The following diagrams show connections for RS232, 2-wire RS485, 4-wire RS422.

Figure 4-15: RS232

Figure 4-16: RS485 2-Wire

Figure 4-17: RS422 4-Wire

RS232 to RS422/RS485 4-wire communications converter HA or JA

HB or JB

HC 0r JC

HD or JD Common

HE or JE Rx

HF or JF Tx

Daisy Chain to further controllers

TxA

TxB

Com

RxA

RxB

Com Tx Rx

Com Tx Rx

HA or JA

HB or JB

HC 0r JC

HD or JD Common

HE or JE Rx

HF or JF Tx

HA or JA

HB or JB

HC 0r JC

HD or JD Common

HE or JE Rx

HF or JF Tx

RS232 to RS485 2-wire communications converter

Daisy Chain to further controllers

RxB

RxA

Com

TxB

TxA

Com Tx Rx Arch

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5. OPERATION On power up the controller will perform a brief self test sequence in which the software version number is displayed. It then starts with display shown below and allows the Level and TDS setpoints to be entered. If an alarm is present during start up it must be acknowledged as instructed on the screen by pressing and together.

Figure 5-1: Boiler Overview Screen

5.1 To Change Setpoints From the above view you can change the Level Setpoint and the TDS Setpoint. Press to select the required setpoint. This is indicated by a flashing underline Press or to raise or lower the setpoint respectively

LEVEL[%]

50 AUT SP1 0.0%

0 TDS[PPM]

434

AUT SP1 0 0%

Title banner. This includes an alarm beacon �� which flashes for a new alarm and is steady if the alarm is acknowledged

Control channel 1 –

Actual liquid level in %

Level setpoint (SP1) Channel in AUT(o) [or MAN(ual)] Control channel 2 –

Actual TDS in [PPM]

TDS setpoint (SP1) Channel in AUT(o)

BOILER OVERVIEW

LEVEL[%] 60 AUT SP1 0.0% 50

TDS[PPM] 2500

AUT SP1 0.0% 2500

Page Button – to select page

headers

Raise/Lower buttons –to change values

Overview pages select button

Button – not used

Button – not used

Scroll Button – to select parameters

PAGE

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5.2 To Select Further Operator Displays

Press PAGE Repeated presses of this button will scroll through different operator views as follows:-

5.2.1 Level Control Page

Press to scroll to:- Press t or u to set value Level Control SP 0 –100% Loop Mode Auto or Manual (a message occurs if the

loop is left in manual for more than 10 minutes)

Level Control OP 0 –100% when Loop Mode in Manual

5.2.2 Level Trend Chart

Press to scroll to:- Press t or u to set value Level Control SP 0 –100% Loop Mode Auto or Manual (a message occurs if the

loop is left in manual for more than 10 Minutes)

Level Control OP 0 –100% when Loop Mode in Manual Timebase 0:00:30 to 24:00:00

BOILER OVERVIEW

47 50

30.0%

v50

LEVEL

PV SP

SP1 AUT

Level Control SP

Title banner Actual level Level setpoint Level demand Level Parameters:-

BOILER OVERVIEW 100

50

0

LEVEL Trend

Level Control OP v50 %

-0:03:00 0:00:00

---PV …SP

Title banner Trend Chart Level Parameters:-

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5.2.3 TDS

Press to scroll to:- Press t or u to set value TDS Control SP 10 – 7500PPM Bdown Alarm Ack No or Yes

The ALARM beacon illuminates on high TDS alarm The SUSPE beacon illuminates when the blowdown is being suspended The BLOWD beacon illuminates when blowdown is in progress The NTWRK beacon illuminates when this or another controller is performing a blowdown

5.2.4 TDS Trend Chart

Press to scroll to:- Press t or u to set value TDS Control SP 10 – 7500PPM Target OP 0.0 to 100.0% read only Timebase 0:00:30 to 24:00:00

BOILER OVERVIEW 7500

0

TDS Trend [PPM]

TDS Control SP v432 PPM

-0:03:00 0:00:00

---PV …SP

Title banner Trend Chart Level Parameters:-

BOILER OVERVIEW 25402500

Bldown State BB WaitCurrent Time 3:24:55

-----------------------------------------------------------------------------------------------TDS Control SP v432PPM

TDS [PPM]

ALARM SUSPE BLOWD NTWRK

Title banner TDS level

TDS control setpoint

Blowdown state

Current time TDS Parameters:-

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6. ACCESS LEVELS The IBC2700 controller can be operated in two levels of access:- Level 1 is intended for day to day operation Level 2 is intended for commissioning or other one off settings. Level 2 is protected by a security code which is set to ‘2’ by default. The controller will start up in the level in which it was left prior to shut down.

6.1 To Select Access Level 2

Do this The display you should see Additional notes

1. From any display press as many times as necessary to display the page header menu

2. Press or to scroll to ‘ACCESS’

This view is shown for Level 1. The TDS Calibration can be carried out in this level.

3. Press to select ‘Access Level’

4. Press to select ‘Level 2’

5. Press or to enter the passcode

In a new controller the passcode is defaulted to ‘2’.

When the correct passcode is entered ‘PASS’ is displayed momentarily.

If an incorrect passcode is entered ‘v0’ is displayed again

6. Now press (twice) to return to the main menu. A longer list is displayed

The remainder of this handbook assumes Level 2 operation.

ALARMS TDS Calibration ACCESS

Access Level vLevel 1

Level 2

Enter Passcode v0

LEVEL Setup TDS Calibration TDS Setup BLOWDOWN Setup STEAM WARM UP REAL TIMR CLOCK

ACCESS

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6.2 To Adjust Parameter Values

Press . to select the Page Header menu Page headers contain lists of parameters which are associated with a particular subject. For example, the page header named BLOWDOWN Setup contains a list of parameters which allow day, time and duration to be set for up to three blowdown programs. The headings which are applicable to the boiler controller may be found in the first two levels of access. They are:-

Header Access level availability

ALARMS Level 1 and Level 2 ALARM setup Level 2 LEVEL setup Level 2 TDS Calibration Level 1 and Level 2 TDS setup Level 2 BLOWDOWN setup Level 2 STEAM WARM UP Level 2 REAL TIME CLOCK Level 2 ACCESS Level 1 and Level 2

Press to select the parameter list Parameters associated with the selected header will be listed. Press or to scroll to the required parameter. Press to edit the selected parameter. The highlighted parameter changes to a flashing underscore. Only parameters preceded by vare changeable If the parameter is an analogue value, it will increase or decrease at an accelerating rate. If it is an digital value its state is changed each time the or button is pressed.

Low Level SP v10 High Level SP 90 High TDS SP 4000

ALARMS ALARM setup LEVEL setup TDS Calibration TDS setup BLOWDOWN setup

STEAM WARM UP

▲

▼

Press

or to scroll to the

required header

Low Level SP 10

High Level SP 90

High TDS SP 4000

▲

▼

Press

or to scroll to the

required parameter Arch

ive



� ALARMS (Summary)

� Low Level Ack: No

� Clean Probe? Ack: No

� Probe Fault Ack: No New Alarm No Ack All Alms? No

� ALARMS (Summary)

� LEVEL Ack: No

� TDS Probe Fault Ack: No

� TDS Temp Input Ack: No New Alarm No Ack All Alms? No

7. ALARMS This list is available in Levels 1 & 2 and gives a summary of all current alarms The views shown here are examples of alarm messages. The display alternates between the two views to give further information on the alarms displayed To acknowledge an alarm, select it, then press or to ‘Yes’, and confirm as requested.

Parameter Name Parameter Description Value Default Message eg Probe Fault

If more than one alarm is present the name of each alarm is flashed in turn.

No/Yes

New Alarm Shown whenever a new alarm occurs No/Yes Ack All Alms? Acknowledge all alarms No/Yes

When an alarm occurs a banner appears This shows the source of the alarm in the upper section and the alarm message in the lower section. To acknowledged the alarm, press and together as instructed.

� TDS Temp Input Probe Fault

Press �� + �� to Ack

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7.1 Alarm Types The following alarm types have been pre-configured in this controller:-

Alarm (message)

Alarm Source

Alarm Trigger Latching SP Hysteresis (units)

Delay

High Level LEVEL Water level too high Auto 100 2 0

Low Level LEVEL Water level too low Auto 0 2 0

High TDS TDS TDS too high Auto 7500 25 10 sec

Clean Probe?

TDS Probe Fault

TDS Probe Fault Auto 1.0 0.0 1 min

Probe Fault

TDS Temp Input

If RTD input is bad, eg the RTD becomes open circuit. Inhibited if ‘RTD Probe Fitted’ parameter = ‘No’

None 1.0 0.0 0

Left in Manual?

LEVEL Shown if the controller has been left in manual operation for more than 10 minutes

None 1.0 0.0 10 min

7.1.1 Auto Latching Auto defines that an alarm is indicated and active until it is acknowledged by the user. The acknowledgement can occur BEFORE the alarm condition is removed but the alarm will stay active until the condition is removed.

7.1.2 Hysteresis An alarm will occur as soon as the alarm setpoint is exceeded. It will cancel as soon as it returns to the setpoint value plus the hysteresis value for a low alarm or minus the hysteresis value for a high alarm. It is used to prevent spurious switching of alarms under electrically noisy conditions.

7.1.3 Delay The alarm will be indicated only after the time set by the Delay parameter.

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7.2 ALARM setup This list is available from Level 2 and sets up alarm threshold levels.

Parameter Name Parameter Description Value Default Low Level SP An alarm will occur if the liquid level falls

below the set level eg 60% 0 - 100%

0

High Level SP An alarm will occur if the liquid level exceeds the set level eg 80%

0 - 100%

100

High TDS SP Sets a limit to the TDS setpoint 0 - 7500 7500

7.2.1 Example: To Set up Low and High Level Alarms



2. Press or to scroll to ‘ALARM Setup’

3. Press to select the parameter list

4. Press again to edit the selected parameter

5. Press or to set the value

The value to be changed is preceded with v. The parameter value is also highlighted with a flashing cursor. In this example the low level alarm is set to operate if the liquid level falls below 10%

6. Press to scroll to ‘High level SP’

7. Press or to set the value

In this example the high level alarm is set to operate if the liquid level exceeds 90%


STEAM WARM UP

Low Level SP v10

High Level SP 90

High TDS SP 7500

Low Level SP 10

High Level SP v90

High TDS SP 7500

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8. LEVEL CONTROL The IBC2700 controller is supplied with dual relay output to operate a modulating valve using a valve motor drive. Liquid level is measured using a capacitance probe and pre-amplifier and two alarms are provided which operate if the level falls below or above pre-determined levels.

8.1 LEVEL Setup Parameters The Level Setup list adjusts parameters associated with level control.

Parameter Name Parameter Description Value Default Current Value The current water level – read only 0 to

100%

Prop Band See note 1

To set the proportional band in % 1 to 99999

15

Integral Time To set the integral time in seconds Off to 9999.9

Off for 4-20mA 60 sec for VP

Derivative Time To set the derivative time in seconds (Derivative is not recommended for boiler control and should be set to ‘Off’)

Off to 9999.9

Off

Motor Time See note 2

Set this value to be the same as (approximately) the travel time of the modulating valve motor

HH:MM:SS

1 minute

Enable Lo Cal To enable low calibration – see next section

Off On

Off

Enable Hi Cal To enable high calibration – see next section Off On

Off

New Value See note 1

This parameter appears only if Lo or Hi Cal is set to On. See next section. If Lo Cal is selected it is normally set to 0% to compensate for any residual liquid left in the boiler when it has been emptied If Hi Cal is selected it is normally set to 100% to indicate boiler full

-9999 to 99999

Note 1: ‘Prop Band’ and ‘New Value’ should only be set between the values 0 – 100%. Note 2: Motor time is not present on the 4-20mA drive version.

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8.2 Example: To Calibrate Boiler Level The level probe output is 0 to 6Vdc. The following example assumes that a minimum boiler level should read 0% and a maximum boiler level should read 100%.

8.2.1 To Calibrate the Low Level Point Lower the boiler water level to the minimum level. This is normally at the bottom of the gauge glass. Then:-



2. Press or to scroll to ‘LEVEL Setup’

This view is shown for Level 2. The TDS Calibration list is also available in Level 1.

3. Press to select the list of parameters

4. If a residual reading is shown, press to scroll ‘Enable Lo Cal’

You may also press first to edit the selected parameter and continue to press to scroll around the parameters

5. Press to edit ‘Enable Lo Cal’

6. Press or to ‘On’

This parameter appears when either Enable Lo or Hi Cal = On. It shows the same value as the Current Value

7. Press to scroll to ‘New Value’

8. Press or to adjust this value to ‘0’

9. Press to confirm.

The ‘Current Value’ will also change to 0%


STEAM WARM UP

Current Value 5

Prop Band 15

Integral Time Off Derivative Time Off Enable Lo Cal Off Enable Hi Cal Off

Derivative Time Off Enable Lo Cal vOn Enable Hi Cal Off

New Value 5

Derivative Time Off Enable Lo Cal On Enable Hi Cal Off

New Value v0

Confirm Adjust Value 5?

�� -Cancel �� -OK

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8.2.2 To Calibrate the High Level Point Fill the boiler to the maximum water level. This is normally at the top of the gauge glass. Then Repeat the above procedure

If the ‘Current Value’ does not read 100% 1. Adjust ‘Enable Hi Cal’ to ‘On’ 2. Adjust ‘New Value’ to 100% and press to confirm. ☺☺☺☺ While it is recommended that the level is calibrated at the low and high level, it is possible to calibrate at any two points over the level range, i.e. 50% and 75% or 50% and 25%.

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9. TDS CONTROL In the IBC2700 TDS is measured using a two electrode probe. Temperature may be measured using an RTD or set by the user. It is adjustable by the user but is defaulted to 184oC for a boiler pressure of 10 Bar. The direct acting control output is used to adjust the TDS via an external relay contact.

Times may be set up which define probe cleaning and line purging.

TDS range is 10PPM to 7500PPM.

A sensor break will occur when the conductance reduces below 50µS.

9.1 TDS Calibration This list is available from Level 1 and allows the controller to be calibrated to match the TDS level in the boiler. Two parameters are available as listed below:-

Parameter Name Parameter Description Value Default

TDS Process Val Current value of TDS in PPM or µS/cm@25oC.

Read only

New TDS Value Allows a new TDS value to be entered Off

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9.1.1 Example: To Calibrate TDS Level (Probe in boiler) Take a sample of the water and measure its conductivity using a meter such as the Spirax Sarco MS1. The minimum conductivity is 10µS/cm or 10PPM. Then:-



2. Press or to scroll to ‘TDS Calibration’

This view is shown for Level 2. The TDS Calibration list is also available in Level 1.


4. Press or to scroll ‘New TDS Value’

You may also press first to edit the selected parameter and continue to press to scroll around the parameters

5. Press to edit the parameter

If the value can be changed it is preceded by v. It is also indicated by a flashing underline

6. Press or to enter the new value taken from the sample measurement

The actual values shown here are only an examples

7. Press to confirm or to cancel as instructed


STEAM WARM UP

TDS Process Value 2255

New TDS Value Off


New TDS Value vOff


New TDS Value v2300

Confirm Probe Cal 2300?

� -Cancel � -OK

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9.2 TDS Setup This list allows parameters associated with the TDS measurement to be set up:-

Parameter Name Parameter Description Value Default Default Temp This parameter uses an Analogue

Calculation value to simulate temperature It is used if a temperature probe is not fitted and is settable by the user.

Adjustable 184oC

Units TDS units Changing the units automatically changes scale values on the TDS Trend Chart display

PPM

µS/cm@ 25oC

PPM

PPM Conversion PPM conversion factor Only shown if units = PPM

0.700 0.700

Probe Clean Day To choose day(s) to start probe clean Note 1 Every Day

Clean Time On To choose a time to start probe clean 0:00:00 to 24:00:00

0:00:00

Clean Time Off To choose a time to stop probe clean 0:00:00 to 24:00:00

0:00:00

RTD Probe Fitted Set to ‘Yes’ if RTD probe fitted. This enables the RTD Probe alarm Set to ‘No’ if no RTD probe fitted. This disables the alarm

Yes No

No

TDS Purge

Purge is only used when the probe is mounted in the blowdown line and ensures the sensor measures the TDS at boiler temperature. Set to ‘Off’ when probe fitted in the boiler Set to ‘On’ when probe fitted in the blowdown line to enable the function

OFF ON

ON

Pause Time Pause time 0:00:00.0 to 99:59:59.9

0:30:00.0

Purge Time To set up a purge time for the particular installation. The purge time should be long enough to allow the sensor to be at the boiler temperature. This can be determined by timing how long it takes for the TDS value to become stable.

0:00:00.0 to 99:59:59.9

0:00:10.0

Note 1:- A probe cleaning time can be set up for any particular installation, and will also change between a probe mounted in the boiler and a probe mounted in the pipeline.

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It uses an electrical current to restore conductivity to a TDS probe that has become scaled. It should not be regarded as a substitute for good water treatment. Probe clean day can be chosen as follows:-

Never, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday, Mon-Fri, Mon-Sat, Sat-Sun, Every Day.

‘Clean Time On’ selects the start time and ‘Clean Time Off’ sets the end time.

For probes mounted in the blowdown line the clean time should not exceed 9 seconds.

For probes mounted in the boiler the clean time should not exceed 99 seconds.

☺☺☺☺: Times may be set by holding the raise or lower buttons until the correct time has been set. Alternatively, hold down the scroll button and use the raise/lower buttons / to move the cursor between hours and minutes then use / to change these independently.

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9.2.1 Example: To Calibrate TDS Level (Probe in blowdown line) As with the previous example, the controller needs to be set up to give an accurate reading of the actual TDS level in the boiler. To do this, the blowdown valve must be opened (purged) to allow water to pass the sensor at boiler temperature. Set the Purge Time as follows:-


1. From any display press as many times as

necessary to display the page header menu

2. Press or to scroll to ‘TDS Setup’


4. Press or to scroll ‘TDS Purge’

5. Press again to edit the parameter

6. Press or ‘ON’

You may also press first to edit the

selected parameter and continue to press

to scroll around the parameters.

☺☺☺☺ Pause Time and Purge Time may also be changed using the same procedure.

☺☺☺☺ Purge time should be set to a value which allows time for the pipeline to reach boiler temperature.

☺☺☺☺ Purge is inhibited if the burner is off and the ‘burner on’ input is connected. ☺☺☺☺ For the most accurate setting, calibrate the controller while the purge is taking place if possible, or within a few minutes of it finishing.

ALARM setup LEVEL setup TDS Calibration TDS Setup BLOWDOWN setup STEAM WARM UP

REAL TIME CLOCK

Probe Clean Day Monday

Clean Time On 0:00:00

Clean Time Off 0:00:00 RTD Probe Fitted No TDS Purge vON Pause Time 0:30:00.0

Purge Time 0:01:00.0

Pause Time Purge Time

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10. BLOWDOWN The IBC2700 has the capability to perform Boiler Blowdown. Although using a continuous TDS controller removes the total dissolved solids, there is still a need to blow down the sediment that forms at the bottom of the boiler. To minimise energy loss, blowdown is restricted to a short (~3sec) burst probably twice a day at a time which can be selected by the operator. The blowdown (water) normally passes to a blowdown vessel, sized to cope with dissipating the energy from a single boiler. The IBC2700 controller uses the digital inputs to provide an interlock with up to eight boilers. This with the associated built in logic inhibits more than one boiler from blowing down at the same time.

10.1 BLOWDOWN Setup This list sets up three time periods for blowdown.

Parameter Name Parameter Description Value Default Blowdown 1 Day Selects the first day to start a blowdown Note 1 Never

Blowdown 1 Time Selects the first time to start a blowdown 0:00:00 to 24:00:00

0:00:00

Blowdown 2 Day Selects a second day to start a blowdown Note 1 Never

Blowdown 2 Time Selects a second time to start a blowdown 0:00:00 to 24:00:00

0:00:00

Blowdown 3 Day Selects a third day to start a blowdown Note 1 Never

Blowdown 3 Time Selects a third time to start a blowdown 0:00:00 to 24:00:00

0:00:00

Duration To set the duration of the blowdown 0:00:01 to 0:00:30

0:00:05

Cool Duration This is the sum of the Pre BB Wait and Cooling Down times. See the sequence diagram in section 10.1.2.

00:00:01 to 10:00:00

00:30:00 min

Valve Switches Set to ‘Yes’ if valve switches are fitted Set to ‘No’ if valve switches are not fitted

No Yes

No

Inst Number To select the instrument on the network 1 to 8 1

Note 1: Never, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday, Mon-Fri, Mon-Sat, Sat-Sun, Every Day.

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10.1.1 Example: To Perform a Boiler Blowdown It is first necessary to set up the Real Time Clock if this has not already been done (see section 12.1.1). Then:-


1. From any display press as many times as

necessary to display the page header menu

2. Press or to scroll to ‘BLOWDOWN Setup’


4. Press again to edit the parameter

5. Press or to set the day

If required set up a Day and Time for a second and third blowdown. This allows up to three blowdowns on each boiler to be performed each day

6. Press to select the ‘Duration’ of the blowdown

7. Press or to set the duration time

8. Press to select the ‘Inst Number’

9. Press or to set an instrument number from 1 to 8

This is necessary so that the interconnection network knows which instrument has priority

Note 1

Note 1:- If more than one boiler attempts a blowdown at the same time, then the ‘Inst Number’ parameter determines which has priority. 8 has the highest priority.

☺☺☺☺: Times may be set by holding the raise or lower buttons until the correct time has been set. Alternatively, hold down the scroll button and use the raise/lower buttons / to move the cursor between hours and minutes then use / to change these independently.

LEVEL setup TDS Calibration TDS Setup BLOWDOWN setup STEAM WARM UP REAL TIME CLOCK

ACCESS

Blowdown 1 Day vEvery Day

Blowdown 1 Time 10:0:00

Blowdown 2 Day Every Day Blowdown 2 Time 16:06:00 Blowdown 3 Day Never Blowdown 3 Time 0:00:00

Duration 0:00:05.0

Blowdown 3 Time 0:00:00

Duration v0:00:05.0

Cool Duration 00:30:00

Cool Duration 00:30:00

Valve Switches No Inst Number 1

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10.1.2 Blowdown Sequence When the blowdown time is reached the following sequence takes place:- This sequence is displayed on the TDS overview screen (section 5.2.3)

a. ‘Bldown State’ will change from ‘BB Wait’ to ‘Check Network’ for only a few seconds. At this point the controller switches the network between high and low states. This is to determine if any other controller is blowing down at the same time

b. Assuming no other controller is blowing down, the network is pulled to a low condition to lock out any other controller at this time. ‘Pre BB Wait’ is shown for 15 minutes (half of ‘Cool Duration’).

c. After ‘Pre BB Wait’ the blowdown output will come on for a few seconds (set by the ‘BB Duration’ parameter) and the ‘Bldown State’ will show ‘Blowing Down’.

d. The ‘Bldown State’ will then show ‘Cooling Down’ for 15 minutes (the other half of cool time)

e. After ‘Cooling Down’ the blowdown sequence is complete and the network will go high allowing other controllers to blowdown if they want

The sequence is shown graphically below: Message on controller Network Inhibit If another controller is holding the network (i.e. terminal D1 is made), the message ‘Network Busy’ is displayed and the NTWRK beacon lights. If the network is not connected the message ‘ Network Open’ is displayed

BB Wait Check Network

Pre BB Wait

Blowing Down

Cooling Down

BlowdownRequest

Network Low

Cool Duration = Pre BB Wait + Cooling Down

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11. STEAM WARM UP These parameters allow a gradual opening of the crown valve to prevent thermal shock and water hammer problems in the steam mains. By default the valve is driven open for 5 seconds (Pulse On-Time) every 5 minutes (Pulse Off-Time). The valve is allowed to close without pulsing

Parameter Name Parameter Description Value Default Open Day To set a day to open the valve Note 1 Never

Open Time To set a time to open the valve 0:00:00 to 24:00:00

0:00:00

Close Time To set a time to close the valve 0:00:00 to 24:00:00

0:00:00

Pulse On-Time The valve is pulsed open for the time set 00:00:00.0 to 99:59:59.9

0:00:05.0

Pulse Off-Time At the end of the time period set by this parameter, the valve will pulse open for the time set by the Pulse On-Time parameter. This will repeat every time period (5 minutes by default)

00:00:00.0 to 99:59:59.9

0:05:00.0

Valve Opening Shows ‘ON’ when the valve is opening and ‘OFF’ when the valve is stationary. This is a read only parameter.

OFF ON

OFF

Valve Closing Shows ‘ON’ when the valve is closing and ‘OFF’ when the valve is stationary. This is a read only parameter.

OFF ON

ON

Note 1:- Never, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday, Mon-Fri, Mon-Sat, Sat-Sun, Every Day. ☺☺☺☺: Times may be set by holding the raise or lower buttons until the correct time has been set. Alternatively, hold down the scroll button and use the raise/lower buttons / to move the cursor between hours and minutes then use / to change these independently.

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12. REAL TIME CLOCK These parameters are available from Level 2 and set up the real time clock.

Parameter Name Parameter Description Value Default Mode Select ‘Set’ to adjust the clock

Select ‘Stop’ to stop the clock Select ‘Run’ to run the clock

Set Stop Run

Day Indicates the current day when the clock is running (or stopped) and allows the day to be changed when ‘Mode’ = ‘Set’

Monday to Sunday

Time Indicates the current time when the clock is running (or stopped) and allows the time to be changed when ‘Mode’ = ‘Set’

00:00:00 to 24:00:00

12.1.1 Example: To Set the Real Time Clock



2. Press or to scroll to ‘REAL TIME CLOCK’


4. Press again to edit ‘Mode’

5. Press or to ‘Set’

6. Press again to edit ‘Day’

7. Press or to set the day

8. Repeat for ‘Time’

9. Go back to Mode and reset to ‘Run’

The clock can also be stopped using the Mode parameter

LEVEL setup TDS Calibration TDS Setup BLOWDOWN setup STEAM WARM UP REAL TIME CLOCK

ACCESS Mode vSet

Day Monday

Time 10:50:00

Mode Set

Day vTuesday

Time 10:50:00

Mode Set

Day Tuesday

Time v12:53:45

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Index

Alarm Types

Clean Probe?, 29 High Level,29, 30, 33 High TDS, 29, 30 Left in Manual?, 29 Low Level, 29, 30, 32 Probe Fault, 28, 29

Blowdown

Duration, 39, 40, 41 Inst Number, 39, 40 Valve Switches, 39

Delay, 29

Digital Communications, 22

Dimensions, 8

Hysteresis, 29

Latching, 29

Level Set Up

Current Value, 31, 32, 33 Derivative Time, 31 Enable Hi Cal, 31, 33 Enable Lo Cal, 31, 32 Integral Time, 31 Motor Time, 31 New Value, 31, 32, 33 Prop Band, 31

Mounting, 9

Real Time Clock

Day, 36, 37, 39, 40, 42, 43 Mode, 24, 43 Time, 39, 40, 43

Setpoints, 23

Steam Warm up

Close Time, 42 Open Day, 42 Open Time, 42 Pulse Off-Time, 42 Pulse On-Time, 42 Valve Closing, 42 Valve Opening, 42

TDS Calibration

New TDS Value, 34, 35 TDS Process Val, 34

TDS Set up Parameters

Clean Time Off, 36, 37 Clean Time On, 36, 37 Default Temp, 36 Pause Time, 36, 38 PPM Conversion, 36 Probe Clean Day, 36 Purge Time, 36, 38 RTD Probe Fitted, 29, 36 TDS Purge, 36, 38 Units, 36

Wiring, 4, 11, 14, 15, 17, 18, 19, 20, 21, 22

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IM-P402-122 AB Issue 3 4028250

HA028177 Feb-04

www.spiraxsarco.com

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IBC2700 Integrated Boiler Controller - · PDF file4.6.1 Probe in Boiler ... This instrument...

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