GBA 26800 H I Guide_lines

OTISEuropean and Transcontinental

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PRODUCTADMINISTRATION

FIELD COMPONENT MANUAL

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OVF20

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Date: 28-Aug-1996

OVF20

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Copyright 1996, OTIS GmbH Berlin. No part of this document may be copied or reproducedin any form or by any means without the prior written consent of OTIS GmbH.

Authorization Date D1: 12-Jun-1996

Running on PCB: GBA 26800 H

Software Version: GAA 30158 AAD

Document Revision:

Date Author Page Comment16-Feb-1996 G. Priebe 1 - 18 Original Document28-Aug-1996 G. Priebe 1 - 21 replace


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Date: 28-Aug-1996

Table of Contents

1 Overview and Characteristics.................................................................... 41.1 General 4

1.2 Characteristics ............................................................................................................ 4

1.3 Limits of Application .................................................................................................... 41.3.1 Velocities............................................................................................................ 41.3.2 Duties 51.3.3 Rated Currents................................................................................................... 51.3.4 Floor Distances .................................................................................................. 51.3.5 Suitable Motors .................................................................................................. 5

1.4 Thermal Overload ....................................................................................................... 6

1.5 Learn Run ................................................................................................................... 6

1.6 Load Weighing ............................................................................................................ 6

2 Equipment ................................................................................................... 62.1 Power Supply.............................................................................................................. 6

2.2 Current Harmonic Filter (CHF) .................................................................................... 6

2.3 Overload and Short circuit protection.......................................................................... 7

2.4 Short to Earth.............................................................................................................. 7

2.5 Hoistway Equipment and Position Reference ............................................................. 7

2.6 Control 7

2.7 Machine/Motor/Encoder.............................................................................................. 8

2.8 Inverter 112.8.1 Braking Resistors ............................................................................................. 112.8.2 MCB II (Motion Control Board)......................................................................... 112.8.3 Signal Flow and Interface................................................................................. 122.8.4 List of Motion Commands ................................................................................ 132.8.5 MCB II 24V outputs .......................................................................................... 13

3 The Control Principle ............................................................................... 14

4 Speed Profile............................................................................................. 154.1 Generating of Speed Profile...................................................................................... 15

4.2 Speed Profiles........................................................................................................... 164.2.1 Normal Run (FR).............................................................................................. 164.2.2 Short Landing (RR) .......................................................................................... 174.2.3 Inspection Run (IN) .......................................................................................... 184.2.4 Releveling (RL) (only at MCS220 controllers) .................................................. 19


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4.2.5 Rescue Run (RS) (only MCS220 controller) .................................................... 20

5 Sequence of operation during Start and Stop........................................ 215.1 Start Phase ............................................................................................................... 21

5.2 Stop Phase ............................................................................................................... 21


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1 Overview and Characteristics

1.1 GeneralThe OVF20 (OTIS Variable Frequence) package controls the speed of an asynchronousmotor with PWM using a frequency inverter.

It ensures good riding comfort as well as high levelling accuracy (max. ± 5mm) under allload conditions. The speed profile values as acceleration, nominal speed, deceleration etc.are adjustable via Service Tool. With the Service Tool it is also possible to adjust furtherparameters as well as to get information about status, events and errors.

A speed feedback is always required i.e. operation without encoder is not possible.

The OVF20 is suited to upgrade existing one or two speed elevators as well as modernisa-tion of UMV and AC servo units.

The OVF20 package (part # GBA 21150 A-H) replaces the former LSVF-W package (part# GAA 21150 A-H). All LSVF-W functions are supported by OVF20.

1.2 CharacteristicsThe current motor is limited to the double of its nominal value during acceleration or decel-eration. For this reason the motor heating is reduced compared with traditional drives.

In connection with a corresponding control (MCS 220) relevelling (RLV) and advanced dooropening (ADO) are possible.

Because of the construction of the inverter and by using of an APD filter the requirementsof EN 55011, class B are observed.An additional filter (APDL) is an option for further improvements

The package can be switched off with support of an internal relay (inverter relay) by usingof MCS 220 controller. It has to be attended that the switching-off function is only activatedat elevators with less than 50 runs per day.

1.3 Limits of Application

1.3.1 Velocities

- max. 1,0 m/s for New Equipment at all controllers and without learn run

- max. 1,2 m/s for Modernisation at all controllers and without learn run

- max. 1,6 m/s with MCS220- or MCS220M- controllers and with learn run


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1.3.2 Duties

Inverter power 3,3 kW 5 kW 9 kW 15 kW1,60 m/s 630 kg 1000 kg1,20 m/s 320 kg 480 kg 630 kg 1000 kg1,00 m/s 320 kg 630 kg 1000 kg 1600 kg0,80 m/s 320 kg 800 kg 1250 kg 1600 kg

max. duty load 0,63 m/s 630 kg 900 kg 1600 kg 1600 kg0,50 m/s 800 kg 1150 kg 1600 kg 1600 kg0,40 m/s 900 kg 1350 kg 1600 kg 1600 kg0,25 m/s 1250 kg 1600 kg 1600 kg 1600 kg

1.3.3 Rated Currents

Inverter power 3,3 kW 5,0 kW 9,0 kW 15 kW

Nominal voltage 220V 480V 220V 480V 220V 480V 220V 480Vnominal output current 15 A 10 A 25 A 15 A 50 A 25 A - 45 Acurrent at acceleration 30 A 20 A 50 A 30 A 100 A 50 A - 90 A

rated current (continuous) 12 A 8 A 20 A 12 A 40 A 20 A - 36 A

The nominal current of the motor may not exceed the nominal inverter current.The time of acceleration phase may not exceed 3 seconds.The nominal output current may not flow for more than 60 seconds.

1.3.4 Floor Distances

speed stoppingdistance in m

Landing distance in m

without learn run with learn runNormal landing short landing

1,60 m/s 2,40 > 4,80 > 1,20 > 0,351,20 m/s 1,40 > 2,80 > 0,80 > 0,351,00 m/s 1,20 > 2,40 > 0,60 > 0,350,80 m/s 0,95 > 1,90 > 0,60 > 0,350,63 m/s 0,80 > 1,60 > 0,60 > 0,350,50 m/s 0,65 > 1,30 > 0,60 > 0,35

1.3.5 Suitable Motors

The OVF20 is qualified as drive control for a multitude of AC motors.

A special overview for usable motors is in:

OTIS MODERNISATION PACKAGES CATALOGUEBerlin A MCS220 M (blue section), Part 4.

At 2- speed motors only the fast winding will be connected.


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The motor rated voltage should be equal or up to 5% less than the line voltage, it may notbe higher than the line voltage.

1.4 Thermal Overload

In case of thermal overload (80°C heat sink temperature) the elevator stops immediatelyduring an inspection run and it stops at the next floor during a normal run. If the tempera-ture increases, the inverter switches off (85°C heat sink temperature).

If the dynamic brake resistor is thermally overloaded (e.g. because of a short circuit), thenthe elevator stops immediately and after 1 minute the inverter switches off.

1.5 Learn Run

At units with integrated MCS220 or MCS220M controllers (with LCB II) have to arrange alearn run before starting up. The software determines the landing distances during the learnrun and calculates the deceleration points for normal runs. The MCB II generates IP signal-swhich are transmitted over the output P2.5 to the LCB II. In this case the position refer-ence signals IPU, IPD, SLU, SLD will not be connected. For all other controller, especiallyMCS220/M Stand alone or 2 cabinet, the position reference signals IPU, IPD, SLU, SLDhave to used. A learn run is not possible here.

1.6 Load WeighingAll MCS220(M) controllers with learn run are prepared to use load weighing in order to op-timize the start jerk. Two discrete load switches can be connected to the MCB II inputs P4.5and P4.6. The switches should be adjusted to 25% i.e. 65% of full load.It is an option to use load weighing especially for problematical modernisiation units, but it isnot generally required to use it.

2 Equipment

2.1 Power Supply

For 480V packages, the functionality in operation will be ensured from 380 to 480V ± 10%and will function with reduced performance in a range of ± 15%.

The same is valid for 220V-packages in a range of 220V to 230V ± 10% or ± 15%.

2.2 Current Harmonic Filter (CHF)

The „Current Harmonic Filter“ smoothes the line current and limits the 5. harmonic (250 Hz)to max. 30% of the value of fundamental oscillation (50 Hz) at nominal power. The CHFdoes not reduce the high frequency noises but with it the code is fulfilled in Germany (EVVrequirements).


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2.3 Overload and Short circuit protectionThe overload circuit breaker (OCB) is necessary in order to protect the drive package. Se-lection of OCB is made according to the power classes. It is only an indirect motor protec-tion.

Power 3,3 kW 5 kW 9 kW 15 kWIOCB (400V) 6,3A - 10A 10A - 16A 16A - 25A 25A - 40AIOCB (220V) 10A - 16A 16A - 25A 32A - 50A

The overload protection of the motor is realized in two ways:

1. Current limitation of the output current of the inverter2. Temperature sensor in motor winding

2.4 Short to Earth

A fault current protection switch (FI) offers no protection for a short to earth behind the rec-tifier against dangerous contact currents.

In case the customer demands a fault current protection switch then use:

• an fault current protection switch with a selective circuit breaker at a nominal current ofmore or equal to 100 mA (e.g. ABB Stotz F 394-40/01) or

• an error current switch without a selective circiut breaker should be installed outsidethe current path of the inverter

2.5 Hoistway Equipment and Position Reference

The configuration of magnets and switches corresponds a normal 2 speed installation torecognize points of deceleration and stop points.

For short landings without learn run SLU/SLD-signals are required.

At OTIS 2000 controllers 5LS- and 6LS-switches at with learn run IPU and IPD switches areno longer used.

2.6 Control

The drive is available with MCS220 or MCS220M controller (integrated version, 2 cabinet orStand Alone). It is also possible to connect OVF20 (Stand Alone) with MS300 or MCS310controller.

Depending on the controller type, the drive interface to the OCSS is a standard interface(MS300, MCS310) or a coded interface (MCS220, MCS220M).


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Date: 28-Aug-1996

2.7 Encoder

The drive package OVF20 is designed to work with various speed encoders. The followingtable shows the availabe inputs:

MCB II Input / Output:Connector / Pin Name DescriptionP5.1 SCLK1 Single Channel Input 1

Internal resistance: 1.8kΩ (with1kΩ resistor in series)

P5.2 SCLK2 Single Channel Input 2Internal resistance: 0.8kΩ

P5.3 CLKA Two Channel Input AInternal resistance: 1.6kΩ

P5.4 CLKB Two Channel Input BInternal resistance: 1.6kΩ

P5.5 EGND GroundP5.6 +15V 15V power supply output; tolerance ±0.75V; maximal output

current: 100mAP9.1 ESCR Screen

The SCLK-Inputs can be used for encoders with 1-channel and maximum 200 pulses.

CLKA and CKLB can be used for encoders with 2-channels and maximum 2 x 1024 pulses.

A 2-channel speed encoder with 2 x 1024 pulses is required for a nominal speed above1.2 m/s.

In the case of non authorised encoders with shielded wiring, the shield has to be connectedon both ends, that means connected to the appropriate contact on the MCB II and the mo-tor at PE.

2.7.1 Connection of the Speed Encoder

The following points should be noted when connecting the speed encoder:

- A) Power supply for the speed encoder.The OVF20 provides a 15VDC voltage for the encoder’s power:Connector pin P5.6 E15V : 15V for the speed encoderConnector pin P5.5 EGND : Earth for the speed encoderMaximum Power Requirement : 100 mA (0...70°C)Screen Connection : provided that it is available, the screen

will be attached to the P9 (between P5 and P6) with a Fast-On connector (6.3 mm).


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Caution!The screen has to be connected to the OVF 20 package (P9) and to the motor.

- B) Single-Channel Speed EncoderThe various models should be connected as follows:

Model 1:Type of Speed Encoder : Output as Push-Pull Output stageConnector Pin P5.1 SCLK1 : Sinlge-channel Input 1Internal Resistance SLCK1 : 1.8 KΩ

Model 2:Type of Speed Encoder : Ouput with 1.0 KΩ Pull-up

i.e. GO 177 CK1Connector Pin P5.2 SCLK2 : Single-channel Input 2Internal Resistance SCLK2 : 0.8 KΩ

Model 3:Type of Speed Encoder : Output with a Pull-up of >5.0 KΩConnector Pin P5.1 SCLK1 : To be connected to the E 15 VConnector Pin P5.2 SCLK2 : Single-channel Input 2Internal Resistance SCLK2 : 0.8 KΩ

- C) Two-Channel Speed EncoderMaximum Impulse / Resolution : 1024 Impulses per ChannelThe encoder should be connected as follows:

Model 1:Type of Speed Encoder : Output as Push-Pull Output stageConnector Pin P5.3 CLKA : Channel A of the speed encoderConnector Pin P5.4 CLKB : Channel B of the speed encoderInternal Resistance CLKA: 1.6 KΩInternal Resistance CLKB: 1.6 KΩ

Other models of Two-channel Speed Encoders, such as encoders with Pull-up /Open-collector ouput stages, are not suitable.

- D) Authorised Speed EncodersOne channel speed encoder: GO 177 CK1 (maximum speed 1.2 m/s)Two channel speed encoder: GBA 633 A1 (maximum speed 1.2 m/s)Two channel speed encoder: JAA 00633 AAF 002 (required for v > 1.2m/s)


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Example of speed encoder connection: GO 177 CK1

Connection onImpulse sensor

Connectornumber

Connection on theMCB II

15 V 1 P5. 6VA 3 P5. 20 V 2 P5. 5

2.7.2 Encoder Timing Requirements

ton

toff

tperiod

VIH

VIL

ton

toff

VIH

VILtphase

2.8 Motor

As motor cable basically a shielded cable has to used and the shield has to be connectedon both sides. Therefore an unshielded cable has to be placed in an metal tube which hasto be connected also on both sides. In this case no further cable especially an encoder ca-ble must be placed in the same tube. In addition the encoder cable must not laid parallel tothe motor cable.

2.9 Electro-Magnetic Compatibility (EMC)The OVF20 package with built in APD- filter fullfilled the requirements of the european normEN 55011. To avoid effect to other components the motor cable has to be shielded, eitherby an accordingly protection pipe or by using of shielded cable.Take care that:the shield has to be connected on both sidesthe ends of the conductors have to be as short as possibleusing of shielded cable for encoder cable if possibledo not lay parallel encoder cable and motor cableFurther instructions for EMC- wiring see the Field Method Manual, Part 5, No EMC3-1.


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2.10 Inverter

The inverter contains the following components:

1. Power part: power filterinverterDC-link with condensertransistor inverted rectifier with 16 kHz clock frequency

2. control part: driver for transistors (PDB)pulse width modulator (MCB II)control

The PDB delivers also the power supply for the MCB II.

The 5-, 9- and 15kW- inverters have a fan which will switched on in dependence to heatsink temperature.

2.10.1 Braking Resistors

The braking resistors for generatoric operation are placed in a seperate box on top of thecontroller cabinet. A thermal contact controls them.

inverter power 3,3 kW 5 kW 9 kW 15 kWvoltage 220V 480V 220V 480V 220V 480V 220V 480V

resistance power 1,6 kW 2,4 kW 4,8 kW 6,0 kW

value of resistance 28 Ohm 78 Ohm 18 Ohm 54 Ohm 10 Ohm 24 Ohm 6 Ohm 24 Ohm

Please find a spare part list for resistors in Service-Handling No.: 0 2-4 chapter 4.

2.10.2 MCB II (Motion Control Board)

The MCB II contains following parts:

• 16 bit microprozessor 80196

• 32 kByte RAM, 128 kByte EPROM, 8 kByte EEPROM

• digital 24/30V-interface to OCSS and to position signals

• 110V-interface to safety circuit

• interface for the encoder, including a 15V-power supply

• RS422-interface to Service Tool

• analog output for measurements with oscilloscope

The MCB II generates a speed profile to realize the speed curve which pretend by pa-rameters given in via Service Tool.


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2.10.3 Signal Flow and Interface

110 VacInputs

110 VacOutputs

Safety -Chain

Main Switch

24 VdcInputs

Encoder -Interface

24 VdcOutputs

110 VacInputs

OperationControl

Safety Function

Load WeighingDevice

Profil-Selection

Position Ref.

Operational -Control

Brake

Power Supply

Hoistway -Signals

Speed -Encoder

UIB - up inspection buttonDIB - down inspection button

NOR - normal run

SW

V1 - speed command 1V2 - speed command 2V3 - speed command 3V4 - speed command 4

DBD - drive and brake switched off

** LW1 / LW2 - load weighing information

1LV / 2LV - doorzone switches

1LS / 2LS - deceleration switches

*SLU/SLD short landing switches

* IPU / IPD - pulse up/down ** UIS / DIS - releveling signals

15 V extern

SCLK1 / SCLK2 - slow clock

CLKA / CLKB - fast clock

BY - brake relay

DS 1 - drive state 1DS2 - drive state 2DS3 - drive state 3DS4 - drive state 4DS5 - drive state 5

PON - Voltage on / off

110 VAC for charge and inverter relay

* in controllers without learn run ** in controllers with learn run


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2.10.4 List of Motion Commands

MS300 and MCS310 (uncoded interface)

There are four speed commands:

U = UpD = DownT = Normal runG = Inspection run or short landing in dependence of UIB DIB or NOR

MCS220/M (coded interface)v4 v3 v2 v1 MC meaning0 0 0 0 <WT> drive is waiting for next run1 1 1 1 <ST> stop, run finished0 0 0 1 <UNVALID> not allowed (Hardware on LCB II)1 1 1 0 <SD> stop in next landing0 0 1 0 <OP UP> unused0 0 1 1 <OP DN> unused0 1 0 0 <IN UP> inspection run up0 1 0 1 <IN DN> inspection run down0 1 1 0 <FR UP> fast run up, normal run0 1 1 1 <FR DN> fast run down, normal run1 0 0 0 <RS UP> rescue run up1 0 0 1 <RS DN> rescue run down1 0 1 0 <RL UP> relevelling up1 0 1 1 <RL DN> relevelling down1 1 0 0 <RR UP> short landing distance up1 1 0 1 <RR DN> short landing distance down

2.10.5 MCB II 24V outputs

MCB II MS300 MCS310

BY (P3.4)DS1 (P2.1) DS1 = OP* DS1 = OP*DS2 (P2.2) DS2 = DZ DS2 = DZDS3 (P2.3) DS3 = SL** DS3 = SL***DS4 (P2.4) DS4 = LNS DS4 = LNSDS5 (P2.5) DS5 = not used DS5 = IP

* = OP-Relay in controller** = one short landing*** = several short landings


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MCB II MCS220 (LCB II)

BY (P3.4)DS1 (P2.1) P1.1 )DS2 (P2.2) P1.3 ) codedDS3 (P2.3) P1.5 )DS4 (P2.4) not usedDS5 (P2.5) P1.9 and P1.10 IP signal in controllers with learn run

output old signals meaningDS1 DS2 DS3 DR RUN SC LNS

0 0 0 0 x x x drive not ready1 0 0 1 1 0 1 elevator running, Speed > Limit, LNS active0 1 0 1 1 0 0 elevator running, Speed > Limit1 1 0 x x x x drive not ready0 0 1 x x x x learn run is active1 0 1 1 1 1 1 elevator running, LNS active0 1 1 1 1 1 0 elevator running1 1 1 1 0 1 0 drive is ready, elevator standing

3 The Control Principle

Gear

Car

MCB II

Speed-encoder

Brakingresistance

ControlMCS220MCS310MS300

v1 - v4

UIB, DIB, NOR

DS1 - DS5

U1, F1L1

L2

L3

Iu, Iv

Hoistway signals

U1 F1Speed-feedback

InverterMotor


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The rectifier converts the three phase power supply into a direct voltage which will flattenedby means of capacitors in DC-link. Then this direct voltage will converted in an alternatingvoltage with variable frequency and voltage by means of puls width modulation.

The output frequency (F1) and voltage (U1) are determined by the MCB II from referencespeed, measured speed and measured motor current. The reference speed (speed profile)is generated depending on control- and hoistway signals. For speed measurement an en-coder is required.

Furthermore the control is constructed in the way that the max. motor current can not over-ceed the inverter rated current.

If max. current (e.g. during the acceleration phase) is reached, then the acceleration rate isreduced. In this case the motor moves with a constant slip and torque. The accelerationrate which has been adjusted by the Service Tool is not reached.

4 Speed Profile

4.1 Generating of Speed Profile

The speed profile is determined by means of individual parameters and with the help of pulswidht generator passed on.

To generate the stop control point, the profile generator needs either a hoistway signal or ainternal deceleration signal. After perception of such a signal the speed is reduced to creepspeed due to the adjusted values. After perception of an LV-signal the speed is decreasedto 0 m/sec.

The parameters for influence of speed profile are (by means of SVT adjustable):

NOM SPE, CRE SPE, INS SPE, ACC, DEC, JERK, IPU DLY, IPD DLY, LV DLY UP and LVDLY DOWN.

With setting of CON SPE, which depends from the mechanic of installation, all furtherspeed profile dependent parameters are software internally set.


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4.2 Speed Profiles

4.2.1 Normal Run (FR)

Signal flow with learn run

Signal flow without learn run

T (SD)

IPU/IPD DLY LV DLYIPU/IPD

LV

Input signals during normal run:NOR = high (MS/NE 300. MCS 310)UIB = DIB = high (all controllers)U/D = high T = high coded interface at MCS 220 (CONTR TYPE = 2 or 4)g = low

t

v

WT FR SD ST WT V1-V4

1LV& 2LV

IP

RUN


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4.2.2 Short Landing (RR)

Signal flow with learn run

The motion command REDUCED RUN (RR) is permanently active. The drive stops at thenext floor. The IP signal is not used.

Signal flow without learn run

Inputs during short landing:NOR = high (MS/NE 300, MCS 310)(UIB = DIB = high at all controllers)U/D = high G = high coded interface at MCS 220 (CONTR TYPE = 2 or 4)t = low

SLU/SLD DLYSLU/SLD

t

v

V1-V4

LV

IP

RUN

WT RR ST WT


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4.2.3 Inspection Run (IN)

Input signals during inspection run:UIB, DIB = highU, D = high (only CONTR TYP = 1)v1 - v4, coded interface at MCS220 (CONTR TYP = 2 or 4)

t

v

WT IN ST WT

UIB/DIB

V1-V4

1LV& 2LV

IP

RUN

Signal flow with and without learn run


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4.2.4 Releveling (RL) (only at MCS220 controllers)

Input signals during relevelling (only with MCS220, CONTR TYP = 2 or 4)UIB = DIB = highv1 - v4 = coded interface at MCS220

Releveling is initialized by the LCB II. The drive receives start and stop commands.

t

v

WT RL ST WT

UIS& DIS

V1-V4

1LV& 2LV

IP

RUN



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4.2.5 Rescue Run (RS) (only MCS220 controller)

IPU/IPD DLY*IPU/IPD

* only required without learn run

In the case of elevator controling systems installed with an EPO box (Emergency PowerOperation), the control system can be switched over to emergency power in the occasion ofa power cut.

The LCB II, which looses the position of the elevator because of the power cut, then sendsa message to the OVF20 drive, by means of the EPO box, giving the command to a „Res-cue Run“ in order to free the occupants of the elevator.

The drive will subsequently carry out a normal run until the elevator arrives at the next floor.

If the elevator stops at the bottom- most limit switch 1LS, it will be accelerated in an up di-rection and the top-most limit switch 2LS will be accelerated in a down direction.

t

v

WT RS ST WT V1-V4

1LV& 2LV

IP

RUN



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5 Sequence of operation during Start and Stop

5.1 Start Phase1. The main contactors are energized by MCB II (SW-Signal).2. Premagnetization of motor. During this period the motor is premagnetisized by a voltage

with constant amplitude and frequency before brake is lifted.3. During lifting of brake the output frequency is increased by a constant slope.4. The speed profile starts with adjusted values after the first valid speed encoder signal.

BY

PremagPer

Pretslope

Brake

SW

RUN

Pret Frequenz

5.2 Stop Phase1. After reaching the stopping point LV and passing of LV DLY-time the speed will be re-

duced to 0 m/s during the time RMP DWN T2.2. During the EL HLT PER the motor is hold electrical. DRP BK DLY have to be adjusted in

this way that the brake will active in this period.3. During DE MAG PER the motor current decreases to zero.4. With drop of the main contactor the run-signal will be inactiv.5. By means of DZ- or RUN-signal the control will informed that run is finished.

DEMAGPER

Creep Speed

LVDLY

LV

BY

RMP DWN T2 EL HLTPER

Brake

SW

DZ

RUN

GBA 26800 H I Guide_lines

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