PROGRAMMABLE LOGIC CONTROLLER

FOR ELEVATORS

CEA31

CONTROLES S.A.

Electrónica Industrial y Telecomunicaciones

Avenida Rivera 3314

11300 Montevideo

Uruguay

Tel.: +598 (2) 622 0651

Fax: +598 (2) 622 2048

E-mail: info@controles.com

www.controles.com

INDEX OF ILLUSTRATIONS

INTRODUCTION

Controles S.A. designed CEA31 as an elevator system oriented PLC, to deal with the inputs and outputs normally found in those applications. Otherwise, CEA31 may be used in industrial control applications. In this case the base program in the ROM creates a multitask system, 10 independent tasks, real time clock, user programmable (usually C) through a series port. This manual describes the CEA31 as a component for the elevator industry.

CEA31 controller is a reduced version of the CEA51FA controller. CEA51FA User's Manual is a recommended reference.

CEA31 basic implementation is a single board circuit useful for most applications such as:

up to 8/6 landings collective down selective with manual/automatic door

up to 5/4 landings collective full selective with manual/automatic door

up to 14 landings collective down selective with multiplexed call buttons

6 output relays

CEA31 includes one serial communication TTL normally used to connect:

- with a PCs to send and receive configuration parameters

- with the handheld terminal T51FA.

- to send orders to digital position indicators and voice annunciator.

CEA31 is user configurable. Controles S.A. offers friendly application software (Windows 98 based) to define parameters for each application. Factory configurations may be ordered. Special programs are sent through INTERNET.

Since 1973 Controles S.A. designs and manufactures electronic elevator controls. Through the years the goal has been to get a small, simple and robust unit to be easily integrated to a full elevator control panel.

PLC CONFIGURATION

CEA31 can be factory configured for special orders. In that case we must receive the complete definition for the intended application. The configuration will be included in the master ROM

(usually 27C256). Changes can be sent by INTERNET and new ROMs programmed by the user with the received ROM files.

Special forms are offered to state the required parameters.

In this case the user (control panel manufacturer, systems installer, maintenance company) defines the complete configuration for its application. A broad selection of parameters is offered.

CEA31-PCW configuration software and CPTTL-PC interface cable are needed. The software is Windows 95 based, to run in a 486 PC or better. The interface cable links the TTL port at the CEA31 with a DB9 RS232 port at the PC.

The configuration is saved in an EAROM memory, and may be read and modified to change definitions for the specific case or to use the CEA31 on another control panel.

The parameters that can be defined are:

serial number (1 to 65535)

control (building) name (40 characters) (to be saved in the PC only)

input/output pins and dispatch logic type

number of landings

floor names for the digital position indicator and voice annunciator

function specification for each of the output relays. Drive type (1 speed, 2 speeds, VV., VV., DC drive, hydraulic elevator) defines the configuration of the related relays.

time definitions

position detection system

rest station parameters

door parameters

serial/parallel position indicators

CEA31 INPUTS/OUTPUTS

CEA31 handles:

call inputs (+24 Vdc active)

position sensor inputs

state inputs (safety series, door position)

motor temperature sensor

inspection service

call recognition lamp outputs (0 Vdc active, through the call wire)

relays

output for digital position indicators, serial or parallel

output for voice annunciator

PC link for controller configuration

T51FA Handheld Auxiliary Terminal link for configuration, log reading, parameter changes and time accumulator clearing.

RELATED EQUIPMENT

CEA31-PCW configuration software

CEA10 programmable logic controller

CEA51FA programmable logic controller

ROM-resident test software for CEA31

SIM3 and SIMP3 system simulator

T51FA Handheld Auxiliary Terminal

SP31 infrared position sensors

ATA2DCM unit (interfaces safety circuits to CEA31 input, LEDs and 2 digit position

indicator)

E1ROC, E8ROC and E8RSA auxiliary relay units

D16RSA 16 relay 1/16 decoder card

Several input and input/output auxiliary cards

IND1D14MM, IND1D20MM and IND1D38MM one or two digits 7 segment position indicators

IND2D14MM-3H, IND2D20MM-3H and IND2D38MM-3H two digit 7 segment position indicators, one line serial command

GONG800 chime generator

IML2D50L dynamic dot matrix position indicator

AV51FA voice annunciator

AV51FA-PCW software for recording messages for the voice annunciator

serial communication cables and adapters

transformers and power supplies

input/output adapters

RF3 and ARF3 phase loss or phase reversal relay

RELATED LITERATURE

CEA51FA User's Manual

T51FA Handheld Auxiliary Terminal Manual- MT51FA-U

General Catalogue

POWER INPUT

CEA31 accepts AC or DC power input:

- 24 Vcc CA1 (+) y MA (-) inputs

- 2*20 Vca 50/60 Hz CA1, CA2, MA inputs

- Maximum power input 15 VA

POSITION SENSORS

Position is sensed by infrared sensors over the car and flags in the hoistway. Sensors sink 24V 20 mA and open when a flag is detected (or dry contacts that open a circuit when sensing appropriately located cams). Two to four position sensors may be needed, according to the application . (See the diagrams).

Sensor outputs are wired to EXS, EXD, PAS and PAD inputs.

Can be used for every kind of drives when slow-down begins inside the floor zone (Slow-down is not floor-advanced).

Each sensor and related flags are mounted in four different vertical lines.

EXS senses the highest car travel position. The flag extends from the point where slow-down begins to the position where upper limit safety switch opens.

EXD senses the lowest car travel position. The flag extends from the point where slow-down begins to the position where lower limit safety switch opens.

Two PAS flags per floor are mounted (only one at the top floor). One of them is used to increase position count and to initiate slow-down. The other one sets the level position.

Two PAD flags per floor are mounted (only one at the lowest floor). One of them is used to decrease position count and to initiate slow-down. The other one sets the level position.

PAS and PAD flags that are used to change position must have a vertical clearance of 50 mm or more. They may be mounted in any order, that is PAS below PAD or PAD below PAS. These flags must be 50 mm long or more. (These flags must be seen for at least 20 ms. Clearance between flags must be 20 ms or more. 50 mm corresponds to a car speed of 150 m/m)

PAS and PAD flags that are used to set level position must have a common vertical path of at least 50 mm (20 ms). Each flag must be seen for at least 50 mm (20 ms) before the other, depending on the travel direction.

System 2.31 may be used for one or two speed drives. The flag at floor level defines the final stop. To adjust up-leveling and down-leveling this flag must be of variable length. The flags next to the floor level define the change of the position and the beginning of the slow-down for two speed drives.

Slow-down length is less than half the distance between floors, an so this system may be used for speeds up to around 75m/m.

System 3.31 can be used for one speed drives only.

SYSTEM STATE INFORMATION

"Safety series" is to be understood as the logical series (AND) of safety switches, not necessarily series connected. The switches may drive secondary relays whose NC or NO contacts are wired so as to build-up the appropriate information.

The information input at the CEA31 controller should be 24 Vdc ("1" or true state) or 0 Vdc ("0" or false state)

CEA31 controller inputs state information about safety series, but it is not intended to be a part of the safety enforcing circuits. Security must be established by electromechanical circuits or any other means external to the CEA31. CEA31 is not a supervised redundant equipment. It only recognizes safety state and reacts according to it.

These concepts are to be applied to limit switches, door contacts, retiring cam and associated contacts, progressive slow-down switches at hoistway end, low speed switches for advanced door opening, etc.

"Manual safety" is to be understood as an input to the controller that is going to be "1" (TRUE) only in the case that all switches and similar parts in the elevator system that need the action of a technician and/or user to be set or reset are in the state that allows controller action.

Included in this definition are, among others:

stop button or stop switch in the car

all manual door closed switches (these are the contacts that close when the door is manually closed, without the eventual action of a retiring cam)

final hoistway limit switches (switches beyond normal travel)

emergency door switches

safety edges or other door protection switches

governor switch

Contacts that are driven by automatic door operator or retiring cam are not included.

When SM=1 the controller may output orders to control doors, retiring cam, traction motor. The controller will react in some way if SM goes to 0 while the system is operating. According to the case it may output an alarm or failure code, open door, stop travel, close an alarm relay or a "busy" relay or similar action.

SM is an input information that the controller receives about actions and system state out of controller command.

"Automatic safety" is to be understood as an input to the controller that is going to be "1" (TRUE) only in the case that some selected switches and similar parts in the elevator under controller command are in the ordered state. The controller outputs an order and after a defined time interval verifies the state of the associated input.

The wiring of these inputs varies according to the system. For an elevator with automatic doors

SA =1 means that automatic doors are completely closed.

For a manual doors elevator with magnetic retiring cam:

SA =1 means that the action of the retiring cam is completed and the door is locked.

In some cases SA may be derived from the brake command, or from an output signal in a VVVF drive. SA states that the orders from the controlled have been executed. A wrong level at SA input provokes an alarm code and stops drive orders.

FPA is to be understood as an input to the controller that is going to be "0" (FALSE) only in the case that the automatic doors at the car and at the floor hall are completely open. The controller outputs the "open door" order and verifies that input pin FPA goes to "0" within a defined time.

When the hall door is manual FPA is exclusively related to the cabin door.

When an FPA switch is not available the input pin FPA may be wired to SA and relay C/AP or relay A/CP must be used for door opening. The "Wait time" (time to wait with door open) must be increased to include the time needed for the opening action of the door operator.

When the cabin door operator drives both doors (cabin and hall) and the hall door has its own end of travel switch then FPA is the logical OR of cabin door and hall door end of travel switches. (the parallel of both switches is a possible wired implementation).

Examples.

Note: "included" means logical inclusion.

Manual cabin and hall doors.

Cabin closed door switch is included in SM circuit.

Hall closed door switch (activated when the door is manually closed) is included in SM circuit.

Hall door has a second switch that closes when the retiring cam acts. This switch is included in the SA circuit.

SM will be "1" when general, emergency and special switches and all doors are closed. SA will be "1" when the whole system is ready to start. FPA is not used.

Manual hall door and automatic cabin door. Retiring cam actuated by door operator.

Hall closed door switch (activated when the door is manually closed) is included in SM circuit.

Cabin closed door switch is included in SA circuit.

Hall door has a second switch that closes when the retiring cam acts. This switch is included in the SA circuit.

SM will be "1" when general, emergency and special switches and all hall doors are closed. SA will be "1" when the whole system is ready to start.

Hall and cabin doors actuated by motor operator. Retiring cam actuated by door operator.

Hall and cabin closed door switch is included in SA circuit.

Hall door has a second switch that closes when the retiring cam acts. This switch is included in the SA circuit.

SM will be "1" when general, emergency and special switches are closed. SA will be "1" when the whole system is ready to start.

CALL INPUTS

CEA31 includes a passive input filter and an input software filter to verify a call. A small delay due to these filters is introduced. A very short action on the button is not recognized.

OUTPUT RELAYS

CEA31 has 6 output relays. Each one (R1 to R6) can be configured to any listed relay function. Another 8 outputs (open collector outputs, 30 Vdc 50 mA) can be configured to any listed relay function.

Relay functions are listed in the Relay Code Definition Table. A wide selection of useful functions is offered. Several common applications are shown.

There are three output pins for each relay: COMMON, NC and NA.

Some relays are associated to timer functions. Time definitions are listed in the Timer Definition Table.

SPECIAL INPUT/OUTPUT PINS AND ACCESSORIES

A PTC resistor (or a series of several PTC resistors) with a simple interface can be wired to ALT input to monitor motor winding temperature.

Total resistance < 400 ohm is understood as a correct temperature condition. CEA31 inhibits any new car travel if total resistance > 1.5 Kohm. An alarm code is displayed.

When "series indicator" is configured the IND3H controller output pin transmits a serial code to "three wire" position indicators. The signal input pin at the indicators is directly wired to IND3H pin, the lowest at right side output pin at the CEA31.

One line drives all car and hall IND2DxxMM-3H position indicators in parallel.

CEA31 TTL port transmits a serial code to IML2D50L dynamic position indicators (TTL port transmits string commands to IML2D50L position indicators and to AV51FA voice annunciator). An interface circuit is needed, such as ACTTL/232-DIN communications adapter or the economical CPTTL/ACC.

Dynamic position indicator shows position, alarm and state codes. The displayed indication moves upwards or downwards to simulate car movement.

IML2D50L includes a circuit to drive a landing chime or a passing chime loudspeaker. Internal jumpers program each position indicator to accept some codes. There is a code for each hall and a code for the car. One series line drives all car and hall IML2D50L position indicators in parallel.

CEA31 can be configured to output special codes through the pins that normally drive position indicators.

Codes are 4 bit address with 3 bit enable and can be used to drive:

- linear multi-light position indicator (one lamp drive for each floor).

- "car leveled at this floor" lamps..

- hall lantern lamps.

CEA31 TTL port transmits a serial code to AV51FA voice annunciator (TTL port transmits string commands to AV51FA and to IML2D50L position indicators). An interface circuit is needed, such as ACTTL-TX communications adapter.

CEA31 transmits a standard code for the standard programmed AV51FA message ROM.

SPECIFICATIONS

Intel 87C51 or similar

32 kbyte ROM

32 kbyte SRAM

256 byte EAROM

16 Digital input Pins E1 to E16 (1)

24 V Active Inputs

Input load: 10 Kohm to 0 Vdc

Input current: 2.4 mA

"0" threshold: 8 Vdc

"1" threshold: 17 Vdc

Software Filter: 20 ms

16 Digital output Pins S1 to S16

Open Collector Outputs

NPN darlington, emitter to 0 Vdc, 330 ohm series resistor

Maximum ratings: 30 Vdc, 50 mA

4 Digital Inputs E17 to E20 (1)

0 Vdc active inputs

Input load: 10 Kohm to 24 Vdc

Input current: -2.4 mA

"0" threshold: 8 Vdc

"1" threshold: 17 Vdc

Software Filter: 10 ms

Input indicator: Led

2 Digital Inputs E21 to E22 (1)

24 Vdc active inputs

Input load: 10 Kohm to 0 Vdc

Input current: 2.4 mA

"0" threshold: 8 Vdc

"1" threshold: 17 Vdc

Software Filter: 20 ms

Input indicator: Led

6 Output Relays R1 to R6 (NA, COMMON, NC) (1)

Maximum ratings: 2 A @ 250 Vac

Indicator: Led

TTL Serial Port

Used pins: RX, TX

Flat cable header connector

Power Supply MA, CA1, CA2 (1)

Voltage: 24 Vdc or 2x20 Vac, 50/60 Hz

Maximum power input: 15 VA

Indicator: Led

Terminal strip with screw connection and wire protection, 14-26 AWG, 100 V, 1 A.

Weight: 590 g

Cabinet: Aluminum

INPUT/OUTPUT NOMENCLATURE

MA 0V dc or neutral of secondary transformer winding

CA, CA +24 Vdc or end points of secondary transformer winding: 20+20 Vac

Up calls LAi

Down calls Ldi,

Car calls LCi

Up calls RAi

Down calls RDi

Car calls RCi

EXS upper end

EXD lower end

PAS up counting and leveling

PAD down counting and leveling

PN up/down counting and leveling (2.31 and 3.31 position detection systems only)

SA Automatic safety

SM Manual safety

FPA Completely open door

ABR "open door" push-button, door leading edge switch, door infrared sensor

CER "close door" push-button

MAN Inspection switch.

While in inspection operation:

First car call: down run

Second car call: up run

ABR: opens door

CER closes door

ALT Motor temperature sensor

UA, ..., UG segment drive for 7 segment led display position indicator (right character)

DA, ..., DG segment drive for 7 segment led display position indicator (left character)

MLC: selector drive for multiplexed call buttons

IND3H: line drive for "3 wirw" position indicators

24V +24 Vdc power supply for local accessories

0V 0 Vdc power supply for local accessories

A0 to A3 binary posiiton code

INHREP lamp inhibit (linear position indicator)

INHLCP lamp inhibit (car leveled at landing)

INHLIN lamp inhibit (landing lantern)

NA normally open contact

C common

NC normally closed contact

See Relay Definition Table

WIRING DIRECTIVES

A simple case is presented to illustrate the care that must be followed when wiring the system.

The power from the public mains inputs the system by three line wires L1, L2 and L3 and eventually a neutral wire N, that are wired to the primary windings of the transformers only. Illumination, blower or other loads are not considered in this discussion.

A different conductor G is wired from the ground discharge of the site to GND ( the GND screw in the cabinet), and is distributed to ground all metallic parts for operators and users protection. Different and well identified conductors must be used for this purpose. In no case this protective wiring shell be used as a conductor for other purposes, even if it is known that the supplier grounds the neutral.

The whole system includes a high power section for the main motor (including eventually VVVF drive or similar), the brake, the retiring cam, the door operator and a low power section for the electronics, including the CEA31 controller, 24Vdc power supply, indicators, register lamps, etc. The transformers for each of these two sections must be independents. Several windings in the same nucleus are not recommended, even in the case that isolation means be provided. Secondary windings provide AC and DC power to the loads. The secondary sides of the high power and the low power sections are "isolated" (except for the ground reference, see below). That means that high power and low power paths are different. A current of the "high power side" cannot use a "low power side" wire, and viceversa.

Both sides must be referenced to ground. Then a conductor is wired from the reference (negative, low side, etc.) of the high power section to GND and a different conductor is wired from the reference (negative, low side, etc.) of the low power stein to GND. These conductors must be designed two assert that an accidental grounding of any other part of the circuits causes the opening of the protection switches or fuses. The controller reference is electrically connected to its metallic base, but the reference wire must be wired equally.

Some information is needed between both sections. For that purpose relays and optocouplers must be used, so that there is no galvanic path between both sides.

There is electrostatic interaction also, due to high voltage step transitions. Some care must be taken to ascertain that this interaction is reduced to acceptable levels, such as arc suppressors and, in some cases, electrostatic shielding. When using VVVF drives and other switching power devices the supplier instructions must be followed. When long data low level lines are used (PC supervisor, modem, etc) shielded cables are used and the shield must be connected to the controller reference side only.4

ARC SUPPRESSORS

Arc suppressors must be wired to protect relay contacts and to eliminate electromagnetic interference to the controllers, power drives, associated electronic equipment and any other electronic parts located near the control panel and hoistway wiring.

Arc suppressors must be used for all system components that could produce such interference, such as contactor coils, auxiliary relay coils, retiring cam coil, brake coil, lengthy cables. They must be wired in parallel with the component that originates the problem, that is where energy is stored.

Arc suppressors must be installed even for loads that are driven by secondary relays, limit switches or any other means different from CEA31 controller relays.

Usually an arc suppressor is a RC series circuit. R and C values depend on the application.

R value range is from 15 ohm to 100 ohm. It should be a wire resistor, 3W to 5W, due to current peaks.

C value range is from .1µF to 3.3 µF. Voltage rating should be twice the working voltage, due to voltage overshoot.

Flywheel diodes should be used for DC loads such as retiring cam coils and brake coils. A diode-resistor series may be needed in some cases to prevent a delayed mechanical response when driving is interrupted.

Suppressors in parallel with the door operator motor may be needed when this motor is driven by small open relays.

A metal-oxide varistor and/or a parallel resistor for DC loads may be useful to limit voltage peaks. Resistor value should be 3 to 5 times the load resistance value.

CONTROLLER CODE TABLE

Model Class Service Landings Traction Call Lamps Indicator

0 (1) 0 SA 14 AC (H) 2

0 (1) 1 SA 9 AC (H) x 1

0 (1) 2 SA 8 AC (H) x 1¹/₂

0 (1) 3 DC 8 AC (H) x 1¹/₂

0 (1) 4 UDC 5 AC (H) x 1¹/₂

0 (1) 5 CNS 14 AC (H) 2

0 (1) 6 CDM 14 AC (H) 2

Model Class Service Landings Traction Call Lamps Indicator

2 (3) 0 SA 11 AC (H) 2

2 (3) 1 SA 9 AC (H) x 1

2 (3) 2 SA 8 AC (H) x 1¹/₂

2 (3) 3 DC 6 AC (H) x 1¹/₂

2 (3) 4 UDC 4 AC (H) x 1¹/₂

2 (3) 5 CNS 11 AC (H) 2

2 (3) 6 CDM 11 AC (H) 2

Model Class Service Landings Traction Call Lamps Indicator

0 (1) 0 SA 14 AC (H) x 2

0 (1) 3 DC 8 AC (H) x 2

0 (1) 4 UDC 5 AC (H) x 2

0 (1) 5 CNS 14 AC (H) x 2

0 (1) 6 CDM 14 AC (H) x 2

Model Class Service Landings Traction Call Lamps Indicator

2 (3) 0 SA 11 AC (H) x 2

2 (3) 3 DC 6 AC (H) x 2

2 (3) 4 UDC 4 AC (H) x 2

2 (3) 5 CNS 11 AC (H) x 2

2 (3) 6 CDM 11 AC (H) x 2

SA: Simple Automatic

DC: Down collective

UDC: Up-Down collective

CNS: Collective non selective

CDM: Down collective with multiplexed call buttons

AC: AC motor

H: Hydraulic

1: one digit indicator

1¹/₂: 1¹/₂ digit indicator

2: Two digit indicator

RELAY CODE TABLE

No action, relay remains off. R00=0

01 POT Potential relay. Relay is on while directional command is on and SA=1.

R01=(R28+R29)*SA.

02 B/AV Low speed/high speed relay. NC contact is used to command high speed. NO contact is

used to command low speed. Relay remains on for 50 ms after directional command goes

off.

03 RAV High speed relay.

04 RBV Low speed relay.

05 AA/BV High/high to low speed starter coil/starter resistance relay. This relay is used in

series with NO auxiliary contacts at high speed or low speed main contactors. Delay

time when high speed motor starts is "High speed start". Delay time when low speed

motor starts is "Low speed start".

06 AAV High speed starter coil/starter resistance relay. Delay time is "High speed start".

07 ABV High to low speed starter coil/starter resistance relay. Delay time is "Low speed

start".

08 AAR Starter coil/starter resistance relay. For one speed AC motor. Delay time is "Start

time".

09 PSU Up-direction program indicator relay.

10 PDE Down-direction program indicator relay.

11 LOC In-use light relay.

12 PAT1 Retracting cam type 1 relay. Relay is on while directional command is on.

R12=R28+R29.

13 RVF Blower relay. Relay is on while motor is running and remains on another three minute.

14 RAP Door open relay.

15 RCP Door close relay.

16 C/AP Door close/door open relay. May be used if door rests open. NO contact is used to close

the door. NC contact is used to open the door.

17 POTR Delayed potential relay. Relay is on while delayed directional command is on.

R17=(R30+R31). To be used as enable command for VV, VVVF or DC drives. Relay

remains on for a "Delayed enable" time interval after level flag is sensed.

18 VAA Relief valve relay. For hydraulic elevators. Relay action is delayed a configurable "Start

time" long time interval after pump motor starts. Relay goes off one second after pump

motor stops.

19 ALA Generic alarm relay. Relay closes if SM=0 for a time interval greater than "SM Alarm

Time" or if a failure condition is detected. SM condition is not applied while in

independent service or in inspection service.

20 GONG Landing chime relay.

21 RED Mains relay. Relay is on while CEA31 is powered. Used to level hydraulic elevators

if a power failure condition occurs.

22 A/CP Door open/door close relay. May be used if door rests closed. NO contact is used to

open the door. NC contact is used to close the door.

23 ESTH star relay for star/delta hydraulic elevator pump motor start. Relay is on during a

"Delta/Star" time interval to initiate a run, provided SA=1.

24 SUTH delta relay for star/delta hydraulic elevator pump motor start. Relay action is delayed

a "Delta/Star" time interval after pump motor starts. Relay remains on for a "Delayed

stop" time interval after level flag is sensed.

25 AVSUT Delayed high speed up-relay for hydraulic elevators. Relay action is delayed a "Start

time" time interval after pump motor starts. Relay remains on while in high speed run.

26 AVSU High speed up-run relay. Relay is closed for a high speed up run.

R26 = R3 * R28

27 AVDE High speed down-run relay. Relay is closed for a high speed down run.

R27 = R3 * R29

28 CSU Up-run directional command relay.

29 CDE Down-run directional command relay.

30 CSUR Delayed up-run directional command relay. This relay is used for VV, VVVF, DC

drives or hydraulic elevators. Relay closes to initiate run. Relay remains on for a

"Delayed stop" time interval after level flag is sensed.

31 CDER Delayed down-run directional command relay. This relay is used for VV, VVVF, DC

drives or hydraulic elevators. Relay closes to initiate run. Relay remains on for a

"Delayed stop" time interval after level flag is sensed.

32 AAR2 Second starter coil/starter resistance relay. For one speed AC motor. Delay time is

2* "Start time".

33 MPUP Gate command relay. Command for pulse input gate operators. PRS and PRD input

pins designation change to ABND and CEND. ASC input pin must be left open or wired

to MA (there is no attendant service). A NO auxiliary contact of the door open contactor

is wired from +24V to ABND pin. A NO auxiliary contact of the door close contactor is

wired from +24V to CEND pin. User push button Open/Close command is wired from

+24V to ABR input pin.

34 RAR Contactor dc coil relief relay. For up/down contactor direct current coil. Relay closes to

start run. Relay opens a time interval "Start time" after SA=1. NO contact shunts the

relief resistor of the contactor coil.

35 INT Running relay. Relay closes once each second, 50% duty cicle, while the car is running

Codes 60 to 99 the relay or the output terminal activates according to:

type of action defined by the first digit of the code

landing defined by the second digit of the code (can be used up to 9 landings)

(If the second digit is 0 the action applies to all the landings)

60 to 69 linear position indicator, one lamp per landing

70 to 79 linear position indicator, one lamp per landing (while in rest state lamps go off)

80 to 89 "car leveled at this landing" lamps

90 to 99 landing lanterns, to be used in combination with PSU and PDE.

CONFIGURABLE TIME TABLE

CEA31 supervises time intervals between changing position flags. A failure condition is detected when any of those intervals is greater than a configured maximum "Travel time" time interval. All run orders are switched off and a F1 alarm code is displayed. The only way to exit this failure condition is to switch off the controller.

A failure condition is detected when SM=0 for a time interval greater than a configured maximum "SM Alarm Time" time interval. Alarm code is a flickering position at the digital indicator.

A car that remains "free" for a time interval longer than "Time to rest" enters "rest state". Then it can be directed to a station and/or door state can be ordered.

A car that reaches a floor waits "Wait time" seconds after the door is completely open. After this wait time interval the door may be closed to start a new run. Wait time is extended by SM=0 condition, ABR button operation, door protection, hall call button, etc. Pushing CER button zeroes wait time.

A car that remains without demand for a time interval longer than "Free car time" enters "free state".

High speed run auxiliary functions.

A car that remains without demand for a time interval longer than "Time to rest at first floor" enters "stand-by state". A car in this state is directed to the lowest floor level. This routine is used for some hydraulic elevators. It is not applied if "Time to rest at first floor " =0.

Some directional commands and other relays are switched off a "Delayed stop" time interval after the last level flag is detected. This time is used in VV, VVVF, DC drives and hydraulic elevators. May be used to maintain directional command once enable command is off. Power drive levels and stops the car during this time. May be used to force a final length travel so that position sensors do not stay near the edge of the flag when the car is stopped. Delayed stop is suggested when leveling speed is very low.

CEA31 supervises door operation. Door operation is interrupted (and eventually reverted) if a time interval "Door action time" is exceeded while closing or opening the door. Intended action is tried again a configurable number of retrials. Then door operation is interrupted and an alarm code displayed.

When a car arrives to a floor to serve a hall call and there are no other calls in the requested direction then the controller waits for the incoming passenger car call for a "Car passenger time" interval. Once elapsed, run direction program may be eventually inverted.

Low speed run auxiliary functions.

Start time for one speed AC motors and others. This time is also used to inhibit simultaneous start of different cars in a group.

Soft start time for DC generators and others.

SPECIAL CODES AT THE POSITION INDICATOR

Least significant digit at the indicator exhibits alternatively "F" and the code, once a second.

Code Meaning

Floor travel time exceeded

SM=0 while running

Door close failure

Door open failure

SA = 0 while running

EXS = EXD = 1 simultaneously

High winding temperature

P Controller lacks configuration

A System start

Flickering A System start with SM=0

Flickering C Inspection service

Flickering position SM=0 for a time interval > "SM Alarm Time"

State codes in mode "one digit":

Flickering A System start (if SM=0)

Flickering alarm codes:

NV Floor travel time exceeded

SM SM=0 while running.

NC Door close failure

NA Door open failure

SA SA = 0 while running

EX EXS = EXD = 1 simultaneously

AT High winding temperature

FP Controller lacks configuration

Position SM=0 for a time interval > "SM Alarm Time"

State codes:

AR System start

Flickering AR System start (if SM=0)

Flickering C Inspection service

CONFIGURABLE PARAMETERS

PC configuration software offers different windows that show the parameters to be defined.

- identification of the system : up to forty (40) characters (saved in the PC only)

- series number : 1 to 65535

- controller type:

ac motor, manual door

hydraulic, manual door

ac motor, automatic door

hydraulic, automatic door

- input/output pins and dispatch logic type:

simple automatic, two digit indicator

simple automatic, one digit indicator

simple automatic, 1 1/2 digit indicator

collective down selective

collective up/down selective

collective no selective

collective down selective (multiplexed call buttons)

- number of landings

- resting station: 1 to NL (number of landings). There is no station when this parameter is defined as 0.

- position detector system : 2.31 to 4.31

- serial/parallel position indicator

- relay code for relay 1 to relay 6 and Aux1 to Aux8 (codes 0 to 99, see table)

- landing name or designation for each landing.

- manual doors, manual hall door and automatic car door, car and hall doors automatic.

- door open or closed at rest.

- simple/double safety contact switch

- door mode: opens always or opens only if a call is served

- indicator mode for failure display

- indicator mode for dinamic LED's matrix indicators

- landing chime mode: chime is commanded always or otherwise only if a call is served

SERIAL PORT

TTL port has a dual row 10 pin header connector.

Pin Function

MS (mode selection)

TX (transmission)

MA (common)

RX (reception)

+5V

Pin 1 (mode selection) must be wired to Pin 4 (MA) when the port is used to transmit to IML2D50L dynamic position indicator, AV51FA voice annunciator or PC supervisor.

Pin 1 is left open when the port is used to link a PC to configure the controller.

T51FA Terminal is used to read the configuration at the controller and to modify timing parameters. Major changes must be carried out with the configuration software or inserting a new 93C46 memory previously configured on board of another controller.

T51FA is a modified QTERM-J10 terminal from QSI Corp., 24 keys, EIA232 version, modified for TTL interfase. It connects directly to the TTL port at the CEA51FA. 5Vdc power supply is present at the port.

T51FA CONFIGURATION

T51FA parameters according to the specific needs are already loaded:

- auto wrap off

- auto scroll off

- auto line feed off

- cursor off

- power-on setup: only contrast adjust

To perform the Power-on Setup follow these steps:

- hold down ENTER key and connect the T51FA to the TTL port at the CEA31.

- keep the key pressed until the software version appears at the display.

- set the desired display contrast using the 1 (up) or 2 (down) keys. When the display is at a contrast you like, press the 3 (validate) key

DISPLAYING THE CEA31 CONFIGURATION

Push 1 key. The display shows:

- controller model

- software version

- series number

- AC or Hydraulic

Push 2 key. The display shows:

- number of landings

- class

- operation (simpleautomatic, collective, etc.)

- rest station

- position detection system

Push 3 key. The display shows:

- door type

- door state when resting

Push 4 key. The display shows the designation of the landings.

Push 5 key. The display shows the numeric code of each relay.

Push 6 key. The display shows the numeric code of each auxiliary output.

Push 7 key. The display shows:

- with/without renivelation

- indicator code: binary/seven segments

- indicator command: parallel/seven series

Push 8 key. The display shows:

- with/without hall door switch

- landing chime always/only with hall call

- automatic door opens always/only if call

- for alarm 6 code the position indicator alternates F and 6 / F and position

Push F1 key. The display shows the character code for the first timer. Each timer can be accessed and viewed pushing F1 (up) or F2 (down) keys.

MODIFYING THE CONFIGURATION

When the display shows a timer its time definition can be changed pushing ­ or ¯ keys.

The changes are operational once entered, but they are not saved to the parameters memory.

To save all changes: push ENTER key. The controller will restart.

To quit without saving: push any 1 to 8 key or restart the controller.

A)

make a visual inspection of the card (solder shorts, position of the components, etc.)

insert the EPROM with the test program "E31"

connect the system according to the attached diagram:

connect the center point of the secondary to terminal MA and the ends to terminals CA.

connect a LED with a 3K3 series resistance from each open collector output to 24V.

use the CPTTL/PC cable adapter or equivalent to connect the controller series port to a

PC RS232-c port. Use the Hyper Terminal or any other communications software with the

Following parameters: 9600 baud, 8 bit, 2 stop, no handshake, no parity. Select the appropriate

COMi.

B)

Apply power with nominal voltage: 20+20 Vac. There must be a 1s app. delay before the "Power" LED lights, generated by the circuit of reset. The relays R3, R4, R5 and R6 become active and inputs IN17, IN18, IN19 and IN20 state is "1" (24V), as shown by the LEDs in the controller.

The screen displays:

A two seconds period is allowed to enter xy at the keyboard to completely erase the EEPROM. If this option is executed the following message appears:

Otherwise the EEPROM is not cleared.

The test proceeds with the message:

Or otherwise:

IN23 corresponds to the series port, which is going to appear always on during the test. Any other active input will be shown in the screen.

Enter a C at the keyboard and proceed to test inputs and relays.

Enter

1 to close relay R1

2 to close relay R2

3 to close relay R3

4 to close relay R4

5 to close relay R5

6 to close relay R6

7 to close the six relays

0 to open the six relays

q to activate output OC1

w to activate output OC2

e to activate output OC3

r to activate output OC4

t to activate output OC5

y to activate output OC6

u to activate output OC7

i to activate output OC8

o to activate output OC9

p to activate output OC10

a to activate output OC11

s to activate output OC12

d to activate output OC13

f to activate output OC14

g to activate output OC15

h to activate output OC16

B to open all OC outputs.

C)

Inputs IN1 to IN16 and open collector outputs OC1 to OC16.

Apply 24 Vdc to INi. The led from OCi to +24 must light.

D)

Inputs IN17 to IN22, LEDs and Relays.

Short IN17 to MA: relay R6 opens

Short IN18 to MA: relay R5 opens

Short IN19 to MA: relay R4 opens

Short IN20 to MA: relay R3 opens

Short IN21 to 24V: relay R2 closes

Short IN22 to 24V: relay R1 closes

In all the cases verify the operation of the corresponding LED.

E)

Repeat the test with input power voltage equal to 17+17 Vac and verify again all the functions.