IT-SWITCH 32A & 40A - Coromatic AB...d: the manual bypass, e: connections for source inputs / load...

IT-SWITCH® 32A & 40A

INTELLIGENT TRANSFER SWITCH 32A & 40A

USER'S GUIDE

UPS/NTA GB/ITS32.F

31/05/2010

IT-SWITCH (models B & E) 32A & 40A

UPS/NTA GB/ITS32.F page 1/23

FOREWORD We thank you for the trust you have in SOCOMEC UPS IT-SWITCH (models S, B and E). Our equipment complies with: - Electromagnetic compatibility directives as per standards EN 50081-1 and EN 50081-2, - Low Voltage directives. SAVETY REQUIREMENTS Conditions: Do read carefully these operation instructions before proceeding to the IT-SWITCH commissioning. For an optimal use, it is recommended to: - maintain the ambient temperature between 0°C and 35°C, - maintain the humidity rate below 90% (condensation-free). Precautions the use should take: WARNING: • It is absolutely necessary to earth the IT-SWITCH before connecting any upstream and downstream

supplies.

• Hazard remain present even if the IT-SWITCH output has been switched off ; supply voltage of sources 1 and 2 is indeed still present.

• Do not remove the cover without completely disconnecting the IT-SWITCH from the input supplies 1 and 2.

Do follow scrupulously the procedures when switching the IT-SWITCH on or off. Whatever the repairs, they must be exclusively executed by authorised and skilled staff. This equipment meets the requirements of the European directives applied to this product. Hence it is labelled as follows:

This equipment is designed to a restricted distribution in compliance with the conditions defined by the standard EN 50091-2. As a consequence, restrictions to the installation or complementary steps may be needed to prevent potential electromagnetic interference.

UPS/NTA GB/ITS32.F page 2

Certificate of Warranty

This SOCOMEC UPS IT SWITCH is guaranteed against any defect in construction or operation

arising from faulty design or materials for a period of 12 months, valid from the date of purchase.

The warranty certificate must NOT be sent to the manufacturer but should be kept in a safe place

together with proof of purchase, as these will be required should the product need to be repaired or replaced under the terms of the warranty.

The period of validity of the warranty is calculated from the date of purchase by the end user from

an authorised dealer (the date on the purchase document is sufficient for this purpose). The warranty is of the 'carry-in' kind: SOCOMEC UPS will provide parts and labour free of charge

for all repair work carried out, but the customer is responsible for the cost and risk of transport to and from SOCOMEC UPS.

For these stipulations to be valid, the Purchaser must comply with the following: - the product must only be returned in its original packing. Any damage caused to the product

during transport, where the original packing has not been used, is not covered by the terms of this warranty.

- the product must be accompanied by proof of purchase (i.e. invoice, receipt) stating the date of

purchase and clearly identifying the product (i.e. bearing the model and serial number). The repair return authorisation number is given by the service centre over the phone after they have received a detailed description of the fault. Failure to provide one of these means that the warranty is no longer valid.

- should the customer not be able to provide proof of purchase, the serial number and the date of

manufacture will be used to calculate the warranty period. This may mean the warranty period is shorter than it would otherwise be.

- the warranty does not cover damage due to misuse (use out of tolerances: power supply,

lightening, humidity, temperature, poor ventilation, etc.), tampering or any other kind of non-authorised intervention.

- during the warranty period, SOCOMEC UPS liability is limited to the obligations as defined herein

(repair or replacement).


CONTENTS

1 PURPOSE OF THE IT-SWITCH ............................................................................................................................. 5

2 IT-SWITCH ARRANGEMENT ............................................................................................................................... 5 2.1 SUMMARY TABLE OF THE VARIOUS FUNCTIONS AVAILABLE ON MODELS S, B AND E ........................................... 5 2.2 FIXED VERSION (MODELS S OR B) ........................................................................................................................ 6 2.3 HOT-SWAP VERSION (MODEL E) .......................................................................................................................... 7

3 MAIN FEATURES .................................................................................................................................................... 8 3.1 CONNECTION MEANS ............................................................................................................................................ 8

4 PRECAUTIONS UPON RECEIPT ......................................................................................................................... 9

5 GENERAL RECOMMANDATIONS FOR INSTALLATION ............................................................................. 9

6 SAFETY ..................................................................................................................................................................... 9

7 CONNECTION OF THE FIXED IT-SWITCH 32A WITH OUTPUT SOCKET (MODELS S AND B) ........ 10 7.1 GROUNDING, SOURCE 1 AND SOURCE 2 CONNECTIONS ....................................................................................... 10 7.2 SOCKET FOR LOAD CONNECTION ........................................................................................................................ 10

8 CONNECTION OF THE FIXED IT-SWITCH 32&40A WITH OUTPUT TERMINAL (MODELS S & B) 11 8.1 GROUNDING, SOURCE 1 AND SOURCE 2 CONNECTIONS ....................................................................................... 11

9 CONNECTION OF THE HOT SWAP IT SWITCH 32A AND 40A (MODEL E) ............................................ 12 9.1 GROUNDING, SOURCE1 AND 2, AND LOAD CONNECTIONS ................................................................................... 12

10 EXTERNAL COMMUNICATION LINKS ...................................................................................................... 13 10.1 REMOTE TRANSFER THROUGH POTENTIAL-FREE CONTACTS ............................................................................... 13 10.2 REMOTE TRANSFER THROUGH SERIAL LINK ........................................................................................................ 13

11 OPERATING PRINCIPLE ................................................................................................................................ 14

12 CONTROL PANEL ............................................................................................................................................ 15 12.1 DESCRIPTION OF STATES AND ALARMS ............................................................................................................... 15 12.2 KEY CONTROLS .................................................................................................................................................. 16 12.3 OPERATION EXPLANATIONS ............................................................................................................................... 16

13 COMMISSIONNING - OPERATION ............................................................................................................ 18 13.1 PRELIMINARY CHECKS ....................................................................................................................................... 18 13.2 SAFETY - REMINDERS ....................................................................................................................................... 18 13.3 PRELIMINARY CONDITIONS ................................................................................................................................. 19 13.4 LOAD SUPPLY ..................................................................................................................................................... 19 13.5 CHANGING THE SOURCE PRIORITY (MODELS S, B AND E) .................................................................................. 19 13.6 LOAD DISCONNECTION ....................................................................................................................................... 19 13.7 TRANSFER TO MANUAL BYPASS (IT-SWITCH MODEL E) ................................................................................. 20

14 DESCRIPTION OF THE VARIOUS STATES ................................................................................................ 21 14.1 TRANSFER IMPOSSIBLE ....................................................................................................................................... 21 14.2 IMMINENT SHUTDOWN ....................................................................................................................................... 21

15 GENERAL ALARM ........................................................................................................................................... 21

16 DIFFICULTIES DURING COMMISSIONING .............................................................................................. 22

17 MAINTENANCE ................................................................................................................................................ 22

18 TROUBLE SHOOTING ..................................................................................................................................... 22


LEXICON

IT-SWITCH : Intelligent Transfer Switch SW : Switch MODBUS/JBUS® : Industrial communication protocol, APRIL registered brand Nota: Packaging – Data labels

1. Fixed version (model S) Depending on the power range of the unit, the reference on the packaging and the data labels is:

IT-SWITCH 32A MS. IT-SWITCH 40A MS. 2. Fixed version HA1 (model B) Depending on the power range of the unit, the reference on the packaging and the data labels is:

IT-SWITCH 32A MB. IT-SWITCH 40A MB. 3. Hot swap version (model E)

Depending on the power range of the unit, the reference marked on the packaging:

- IT-SWITCH 32A MET or 40A MET if the system is fitted with terminal connections,

Depending on the power range of the unit, the references on the data labels are as follows:

- IT-SWITCH 32A ET or 40A ET + serial number if the chassis is fitted with terminal connections,

- IT-SWITCH 32A ME or 40A ME + serial number for the hot swap unit.

1 High Availability


GENERAL PRESENTATION 1 PURPOSE OF THE IT-SWITCH

The IT-SWITCH provides a dual redundant supply to the load(s) from two synchronous and alternating sources.

The IT-SWITCH senses voltage outages and ensures the load automatically transfers to the alternate source (seamless for the load).

The IT-SWITCH improves the load power supply reliability. The load can quickly be transferred (either automatically or manually) from the so called "Preferred" source to the "alternate" source (and vice versa). Note: this document providethis document provides information in terms of safety, connection and using. 2 IT-SWITCH ARRANGEMENT Three versions of IT-SWITCH are available: - fixed version (model S) - fixed version HA (model B)

- hot-swap version (model E), with a manual bypass for replacing the live IT-SWITCH without interrupting the load power supply.

2.1 Summary table of the various functions available on models S, B and E

Standard IT-SWITCH

HA IT-SWITCH

Hot swap HA IT-SWITCH

FUNCTIONS

Model S

Model B

Model E

- Type of transfer: manual without sources overlapping synchronous/asynchronous synchronous type only - Detection of short circuit on the output - Counter for successive transfers upon failure - Hot Swap unit - Manual bypass - Serial link (JBUS) - Dry contacts - Selection of priority source - Event log - Socket for commissioning and servicing PC

X X X

X X X X

X X X X X X

X X X X X

X X X X X X X X X X X X X

SECTION

1


2.2 Fixed version (Models S or B) Dimensions are mentioned in section 3.

OVERVIEW IT SWITCH 32A – Load output socket

a

b

c

d

e f

d'

On the top: a: control panel, b: 2 handles. On the front: c: glands for connection of sources 1 and 2 (≤ 10

mm²), d: single phase socket 32A to the load, d’: 2nd socket optional e: connections for servicing dedicated PC. On the side: f: Input for remote control panel

OVERVIEW IT SWITCH 32A/40A – Load output terminal

a

b

c

d

e f

On the top: a: control panel, b: 2 handles. On the front: c: glands for connection of sources 1 and 2 (≤ 10

mm²), d: gland for connection to the load (≤ 10 mm²), e: connections for servicing dedicated PC. On the side: f: Input for remote control panel

BASIC SCHEME

SOURCE INPUTS

SW SW

TO THE LOADS


2.3 Hot-swap version (Model E)

This version additionally comprises a chassis, in which can be found the manual bypass switch. The chassis accommodates the IT-SWITCH unit that can be removed without disconnecting the load supply. Dimensions are mentioned in section 3.

OVERVIEW

ab

c

d

e

A

B

A. Hot swap electronic box including:

a: the control panel,

b: 2 handles for pulling out the box,

c: connection socket for servicing dedicated PC.

B. Chassis including:

d: the manual bypass,

e: connections for source inputs / load output (≤ 10 mm²).

BASIC SCHEME

INPUT SOURCES

SW SW

A

B1 2N

A Hot-swap IT-SWITCH box with switching

electronics.

B Fixed chassis with manual bypass.

TO THE LOADS


3 MAIN FEATURES

Electrical data and performance

Supply Single phaseInput voltages (source 1 and source 2) 120V-220V-230V-240V ± 10 % rmsRated frequency 50-60 Hz ± 10 %

Phase tolerance admitted between Source1/Source 2 for seamless transfer 15°

Max gradient for frequency variation 10 Hz/secRated current 32A or 40APeak factor 4Leakage current


INSTALLATION - CONNECTIONS

4 PRECAUTIONS UPON RECEIPT

Always inspect the packaging condition of the equipment upon receipt (in terms of damage, shocks, or enclosure deformation). If necessary, write down discrepancies on the delivery note. Carefully extract the IT-SWITCH from its packaging, knowing that the weight is not evenly shared within the case.

5 GENERAL RECOMMANDATIONS FOR INSTALLATION The environment should: - be protected from humidity, - provide no obstacle to prevent air circulation, especially if the IT-SWITCH is located in a cabinet, - allow sufficient ventilation to ensure a constant operating temperature, - be dry, clean and dust free, - be free of flammable vapour or corrosive smoke.

REMINDER: The ambient temperature recommended is between

0 and 35°C.

6 SAFETY

IMPORTANT

It is recommended to carefully read this manual prior to source and load connections. This manual should be kept close to the IT-SWITCH for easy consultation if needed.

CAUTION

EARTHING CONNECTIONS ARE TO BE MADE PRIOR TO SOURCE CONNECTIONS.

IMPORTANT

ELECTRICAL CONNECTIONS AS WELL AS CABLING OPERATIONS SHOULD ONLY BE MADE BY SKILLED AND SUITABLY TRAINED PERSONNEL.

SECTION

2


7 CONNECTION OF THE FIXED IT-SWITCH 32A WITH OUTPUT SOCKET (MODELS S AND B)

7.1 Grounding, source 1 and source 2 connections

7.2 Socket for load connection Front view:

On the lower part of the front panel, loosen the 6 screws securing the covers with the glands and grommets. The left cover corresponds to the input of source 1, while the right one corresponds to the input of source 2. Caution: earth bonding should be carried out prior to any other operation.

Earth bonding: screw: Ø 6mm. Input SOURCE 1: X10/3: PE, F10: Neutral, F11: Phase, Input SOURCE 2: X20/3: PE, F20: Neutral, F21: Phase, JBUS Connection X31 and X32: (See §10.2)

X31 X32

X10/3 F10 F11 F20 F21 X20/3

Earth bonding

The load socket is single-phase: 2 poles + earth ; IP44. It complies with European standards EN 60309-1/60309/2.

Phase Neutral

PE


Earth bonding

8 CONNECTION OF THE FIXED IT-SWITCH 32A&40A WITH OUTPUT TERMINAL (MODELS S & B)

8.1 Grounding, source 1 and source 2 connections

X10/

3

X20/

3X31 X32F10-F11 F20-F21X30/

1

X30/

2X3

0/3

On the lower part of the front panel, loosen the 6 screws securing the covers with the glands and grommets. The left cover corresponds to the input of source 1, while the right one corresponds to the input of source 2. Caution: earth bonding should be carried out prior to any other operation.

Earth bonding: screw: Ø 6mm. Input SOURCE 1: X10/3: PE, F10: Neutral, F11: Phase, Input SOURCE 2: X20/3: PE, F20: Neutral, F21: Phase, To the LOAD X30/1: PE, X30/2: Neutral, X30/3: Phase, JBUS Connection X31 and X32: (See § 10.2)


9 CONNECTION OF THE HOT SWAP IT SWITCH 32A AND 40A (MODEL E)

To gain access to the connection terminals, loosen the 6 screws securing the two covers with the glands and grommets of the chassis.

9.1 Grounding, source1 and 2, and load connections

NOTE: Protection cable PE must be connected first.

Earth bonding: screw: Ø 6mm. SOURCE 1 input: X10/1: PE, X10/2: Neutral, X10/3: Phase, SOURCE 2 input: X20/1: Neutral, X20/2: Phase, X20/3: PE To the LOAD X30/1: PE, X30/2: Neutral, X30/3: Phase, JBUS connection X31 and X32: (Please, see § 10.2)

X10 X31 X30 X32 X20

Earth bonding

3 Screws 3 Screws


10 EXTERNAL COMMUNICATION LINKS

10.1 Remote transfer through potential-free contacts

Connector X31 is for remote transfer of the following states and alarms:

STATUS and ALARMS Source 1 ON terminals 1-2, closing contact

Source 2 ON terminals 3-4, closing contact

Source 1 preferred terminals 5-6, closing contact

Transfer impossible terminals 7-8, closing contact

General Alarm terminals 9-10, contact closed upon failure

NOTE: breaking capacity of contacts: 0,5 A with 125VAC. Use twisted wires. 10.2 Remote transfer through serial link

IMPORTANT: Not available on the l' IT-SWITCH model S. Connector X32 enables the connection through the RS485 (or RS422) – type serial link under the MODBUS/JBUS® protocol. For address assignment, please refer to manual UPS/NTA GB/MTCJBUS.

RS485 Link

RS422 Link

On X32, strap terminals 1 and 2 if the IT-SWITCH is line end.

On X32, strap terminals 1 and 2 ; as well as 5 and 6 if the IT-SWITCH is line end.

terminal 2: TX+ / RX+ terminal 2: TX+

terminal 3: TX- /RX- terminal 3: TX-

terminal 7: 0V Isolated terminal 4: RX+

terminal 5: RX-

terminal 7: 0V Isolated

NOTE: Use shielded and twisted wires

For communication with a building management system or TOP VISION supervision system, use serial link RS485.


OPERATION

11 OPERATING PRINCIPLE

In normal operating conditions, the IT-SWITCH supplies the load from the preferred source. The latter can be selected by the operator, depending on the operating requirements of the site. Two different transfer modes can be selected: - the manual mode by pressing the push button on the control panel:

" SOURCE 1" to supply the load from source 1

" SOURCE 2" to supply the load from source 2

- or the automatic mode, upon source failure.

In such a case, the IT-SWITCH: - senses a failure on the preferred source and ensures the automatic load transfer to the alternate source,

- senses a failure on the alternate source and ensures the automatic seamless load transfer to the priority

source, following a manual transfer to the alternate source.

NOTE: the preferred source (source 1 or source 2) is selected from the control panel (see § 12.1) of from the TOP VISION supervision workstation.

SECTION

3


12 CONTROL PANEL

It comprises a mimic panel that represents the IT-SWITCH and the flow of energy that passes through it. Three keys are for operating the system.

12.1 Description of states and alarms

1

2

1

2

1

2

1 2

1

GREEN

led

SOURCE 1 PREFERRED

2

GREEN

led

SOURCE 2 PREFERRED

GREEN

led

INPUT VOLTAGE PRESENT ON SOURCE 1 or SOURCE 2

GREEN

led

SOURCE 1 or SOURCE 2 ON

1

2

1

2

ORANGE led

TRANSFER BLOCKED (see § 12.3.3.)

ORANGE led

TRANSFER IMPOSSIBLE (see § 12.3.1.)

RED led

Slow blinking: short-circuit current detected Rapid blinking: IMMINENT SHUTDOWN (see § 14.2.) Fixed light on: MANUAL BYPASS switch in position 1 or 2

ORANGE

led

MANUAL BYPASS of source 1 or source 2 ON (IT-SWITCH model E) Not used (IT-SWITCH models S and B)

voyant

ORANGE

GENERAL ALARM


12.2 Key controls

Key makes it possible to close static switch SW1. Key makes it possible to close static switch SW2.

Key

(alarm reset) shows three functions:

- 1 light pressing for resetting the audible beep, - 1 long pressing (5 seconds minimum) for selecting the preferred source. - 1 pressing together with key or (depending on the source supplying energy) causes the load

disconnection (see § 11.3.4).

12.3 Operation explanations

The IT-SWITCH provides two main operating modes: - the manual transfer by the operator either locally or remotely (through the TOPVISION supervision centre) - the automatic transfer by detection when the voltage of the preferred source exceeds the permitted

values. The transfer is without sources overlapping.

12.3.1 Manual transfer The operator can control the load transfer from one source to the other by using keys or on the control panel.

When pressing any keys, an audible beep is given to indicate that the request has been taken into account.

The manual transfer is seamless.

If synchronisation conditions are not fulfilled after 25 seconds (factory standard setting), an asynchronous transfer is performed. If the latter is impossible (e.g. input source out of tolerance) the following led lights !

TRANSFER IMPOSSIBLE

Note: The alarm is automatically deleted when normal conditions are restored. 12.3.2 Automatic transfer

The automatic transfer from the preferred source to the alternate one is seamless for the load. It is carried out if a voltage drop occurs on the preferred source or if the latter fails. When the preferred source is restored, the IT-SWITCH automatically transfers the load back to this source after 3 seconds. An automatic transfer from the alternate to the preferred source can also be performed following a manual transfer request.


To ensure safe transfer, the IT-SWITCH constantly monitors if the alternate source is present and within the tolerances. If not, the transfer function is inhibited and the IT-SWITCH immediately gives the alarm to inform the operator that no transfer can be performed. In case of short-circuit on the output of one of the loads supplied, the transfer function is inhibited. This facility is for preventing the short-circuit transmission to the other path which is therefore left untouched. IMPORTANT: this functionality is not available on the IT-SWITCH model S Transfer can either be synchronous or asynchronous depending on the synchronisation of the sources and on the configuration of the IT-SWITCH.

Synchronous transfer

The synchronous transfer is automatic when both sources S1 and S2 fulfil synchronisation conditions, that is when the phase shift is within the values admitted (in standard +/- 15°). In such case, the source switching does not cause changes of phase. If the phase shift exceeds the values admitted, the synchronous automatic transfer to the other source is inhibited, unless the system is set with the synchronous and asynchronous conditions (software configuration).

NOTE: The IT-SWITCH is set in standard for synchronous and asynchronous type transfers. It can however be set for synchronous transfers only if the load connected is sensible to phase changes. Most information processing equipment, servers, computers and so on, are not sensible to significant changes of phase.

IMPORTANT: the IT-SWITCH model S can not be set for synchronous transfer only.

Asynchronous transfer

The asynchronous transfer is only executed if the software setting has been validated (standard factory setting) and if sources S1 and S2 are not synchronised (phase shift exceeding the admitted values). In such a case, the source switching can show a significant change of phase. This type of transfer is for safe load switching between sources that are not constantly monitored or exceptionally out of phase.

12.3.3 Transfer blocked

In the event of five consecutive automatic transfers within 2 minutes (120 seconds), the alarm

1

2 (or the

alarm: 2

1

10 ) is given. At this stage, the transfer is blocked and the load is supplied by the alternate source. Note: to activate the transfer, press key or depending on the source preferred. IMPORTANT: the IT-SWITCH model S has no "transfer blocked" configuration


12.3.4 Load disconnection

The load disconnection control is for load switching off, while sources 1 and 2 are present on the IT-SWITCH. The control key is

:"alarm reset" (see §12.2).

12.3.5 Overload conditions

As soon as the IT-SWITCH is overloaded (load rate > 103%) the general alarm is given. For currents and overload permitted values, please refer to § 3.

Operation on the preferred source: A request for transfer to the alternate source can be performed when the overload is half the nominal overload capacity. Two cases can arise: - if the transfer can be achieved, the load is transferred to the alternate source, - if the transfer is impossible, the IT-SWITCH gives the "imminent shutdown" alarm. When the maximum

overload capacity is reached, the load is disconnected.

Operation on the alternate source: In case of overload, the "imminent shutdown" alarm is given. When the maximum overload capacity is reached, the load is disconnected by the IT-SWITCH.

Principle of the automatic start up: In case both sources fail while the IT-SWITCH is supplied by one or the other source, the unit resumes operation with the first one to be restored. The transfer to the preferred source is automatic when the latter is restored. The automatic startup function can be configured and is activated by default.

13 COMMISSIONNING - OPERATION

13.1 Preliminary checks

Only initiate commissioning after completing:

- earth bonding, - adequate connections of the IEC sockets (or connections to terminals).

13.2 Safety - Reminders

CAUTION

Even when switched off, the IT-SWITCH is constantly live, supply voltage is present at the input of source 1 and 2.

ADVICE

Any operation can be safely carried out. Do carefully follow the using or maintenance instructions described in the manual.


13.3 Preliminary conditions

Source 1 and Source 2 are live.

13.4 Load supply

From the control panel, press key:

, for the load to be supplied by source 1, or , for the load to be supplied by source 2.

If the operator selects the alternate source, the IT-SWITCH supplies the load from the source selected. However, the IT-SWITCH automatically switches the load to the preferred source after a few seconds.

13.5 Changing the source priority (models S, B and E)

NOTE: By default, source 1 is preferred when switching on the unit.

Press key

for 5 seconds, and make sure that the led lights confirm the change of source.

After changing the source priority, the load is automatically transferred, after a few seconds, to the newly preferred source.

13.6 Load disconnection

Load disconnection opens the circuit of each source. The output is therefore no longer supplied.

Press key "ALARM RESET" together with key or depending on the source that is supplying load current. At this stage the load is no longer supplied.

NOTE: If an alarm is displayed, it must be reset before sending a control.


13.7 Transfer to manual Bypass (IT-SWITCH Model E)

The IT-SWITCH (model E) has two "manual bypasses": one to source 1 and the other one to source 2. This way, the load can be directly supplied by one or the other source, or the IT SWITCH can be extracted or replaced.

The manual bypass is controlled by a 3-position switch located on the top of the chassis:

- position "N": position for normal operation, - position 1: manual bypass supplied by source 1, - position 2: manual bypass supplied by source 2. NOTA: while in position "N", the IT-SWITCH is locked to the chassis and can not be removed.

13.7.1 Load transfer to manual bypass

As each source has its "manual bypass", two cases can arise:

1 2

N

a. the load is supplied by source 1: - open the access door on the front,

- set the switch to position 1

At this stage, the load is directly supplied by source 1.

1 2

N

b. the load is supplied by source 2: - open the access door on the front, - set the switch to position 2 At this stage, the load is directly supplied by source 2.

Note 1: At this stage, the IT-SWITCH can be removed from the chassis without perturbation for the load. Note 2: the position of the switch on the chassis must not be changed while the IT-SWITCH box is not in place, because it would result in the disconnection of the load.


13.7.2 Return from manual bypass to the IT-SWITCH

a. the load is supplied by manual bypass 1: - slide the IT-SWITCH box into the chassis, - ensure that the triangular green led for S1 is on, on the control panel - set the switch to "N" At this stage the load is supplied through the IT-SWITCH.

b. the load is supplied by manual bypass 2: - slide the IT-SWITCH box into the chassis, - ensure that the triangular green led for S2 is on, on the control panel - set the switch to "N" At this stage the load is supplied through the IT-SWITCH.

14 DESCRIPTION OF THE VARIOUS STATES

14.1 Transfer impossible The transfer becomes impossible if the conditions are as follows: - voltage outage or voltage out of tolerance on alternate source, - frequency out of tolerance, - phase on both sources out of tolerance and setting for synchronous transfer only, - failure on the alternate source, - short-circuit downstream of the system. 14.2 Imminent shutdown Conditions leading to imminent shutdown are as follows:

- equipment ambient temperature fault, - overload alarm on preferred path supplying the load and transfer impossible (alternate source not

available), - overload alarm on alternate path supplying the load. Note: the alarm IMMINENT SHUTDOWN informs the operator that the equipment is about to be stopped for safety reasons. 15 GENERAL ALARM The general alarm comprises:

- imminent shutdown, - transfer impossible, - return impossible, - overload, - equipment ambient temperature.


TROUBLE SHOOTING AND MAINTENANCE

16 DIFFICULTIES DURING COMMISSIONING

External causes:

Check the connection and the presence of the power sources. In case of a malfunction, ensure neutral and phase connections are suitable on each source. If the green leds "Input voltage present on source 1" and "Input voltage present on source 2" are lit together with the orange led "transfer impossible", ensure that both sources have the same phase. For the proper functioning of the equipment, both supply sources should show: - the same voltage, - the same frequency, - the same phase.

Internal causes, operation checking: If only the red led IMMINENT SHUTDOWN is lit, the electronic temperature has reached a critical level.

17 MAINTENANCE

The IT-SWITCH is an equipment that was tested and set by the factory in compliance with quality requirement. Any internal intervention should only be made by personnel approved by SOCOMEC UPS.

18 TROUBLE SHOOTING (See next page)

SECTION

4


CONSTAT POSSIBLE CAUSE OPERATION TO BE PERFORMED

A Mimic panel not supplied

(no LED ON) Both input sources of the IT-SWITCH are absent Ensure that the source input voltage is present Connection problem Check that inputs S1 and/or S2 are connected

Ensure that the rack (model E) has been properly inserted

B Impossible to switch Q50

(Model E only) Rack (ME) not properly inserted Pull out the rack, check the position of Q50 and set it to the initial position

Caution: before switching Q50 to the second source, ensure that it is present Q50 in the wrong position (I or II)

C Slow blinking of the output red LED

(mimic panel) Short-circuit detected (and stored) on the load output Check the load output circuit in order to find out the anomaly before resetting the alarm.

D

Rapid blinking of the output red LED

(mimic panel)

Detection "temperature too high" Check the conditions of the unit environment: T° amb / cabinet ventilation / heat source close to the unit…

Overload + Transfer impossible Refer to E (overload)

E

Failure of one of the source (S1 or S2)

Source absent or out of tolerances Refer to A Manual bypass on the second source Supply the load via the second source and return to position "N" Overload and operation on alternate source Ensure that the IT-SWITCH unit is not overloaded

Reduce the load rate and wait for the power circuit to cool down Overload capacity reached

F Impossible to perform a manual transfer to the

second source Refer to E Refer to E

G

Alarm « Transfer blocked» ON 1

2

1

2

wrong contact on the input Check the tightening of input terminals and upstream protections (circuit breakers) Ensure that sources input cables are not damaged

Preferred source not operating properly Ensure that the source is neither faulty nor overloaded

H

Blinking LED (source 1 or 2)

Refer to E Refer E: Reduce the load Sources are not synchronised And load on alternate source (after automatic transfer) And configuration "synchronous only"

Try to obtain the synchronisation between both sources

X

GREEN led SOURCE X PREFERRED

GREEN led INPUT VOLTAGE PRESENT ON SOURCE 1 or SOURCE 2

GREEN led Fixed light on: SOURCE 1 or SOURCE 2 ON Blinking: switch alarm (e.g. overload)

ORANGE led TRANSFER IMPOSSIBLE (second source not available or not synchronised) ( See § 12.3.1.)

RED led

Slow blinking: short-circuit current detected Rapid blinking: IMMINENT SHUTDOWN ( See § 14.2.) Fixed light on: MANUAL BYPASS switch in position 1 or 2

ORANGE led MANUAL BYPASS of source 1 or 2 ON (for IT-SWITCH model E). Not used for IT-SWITCH models S or B.

ORANGE led GENERAL ALARM 1

2

1

2 ORANGE led TRANSFER BLOCKED (see § 12.3.3.)

Key is for the closing command of switch SW1.

Key is for the closing command of switch SW2.

- light pressing: for alarm reset

- long pressing (5 seconds ): to select the preferred source

- simultaneous pressing with key or : load

disconnection

IT-SWITCH 32A & 40A - Coromatic AB...d: the manual bypass, e: connections for source inputs / load...

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Transcript of IT-SWITCH 32A & 40A - Coromatic AB...d: the manual bypass, e: connections for source inputs / load...