PROGRAMMABLE LOGIC CONTROLLER

FOR ELEVATORS

HALL CALL CONTROLLER EXT51FA

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 EXT51FA as an elevator system oriented PLC, to deal with all the inputs and outputs normally associated with hall call buttons and group relay functions. Otherwise, EXT51FA 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 EXT51FA as a component for the elevator industry.

EXT51FA basic implementation is a single board circuit useful for most applications such as:

- up to 40 landings collective down selective

- up to 24 landings collective full selective

- 10 output relays

Adding a EXP51FA expansion board the system grows to bigger applications, such as:

- up to 40 landings collective full selective

- 18 output relays

EXT51FA includes:

- one FO (fiber optics) serial communication ports used to communicate with a COO51FA in a group, up to six cars.

- one RS232 port used to link EXT51FA with a PC or service keypad to send and receive configuration.

EXT51FA is user configurable. Controles S.A. offers friendly application software (Windows 95 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.

EXT51FA 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.

CEA51FA-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 EXT51FA 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 EXT51FA on another control panel.

The parameters that can be defined are:

• code to access and modify the configuration and to clear the time accumulator between inspections
• maximum time period and time tolerance between inspections (0 to 120 days each)
• serial number (1 to 65535)
• control (building) name (40 characters)
• input/output pins and dispatch logic type
• landings
• first and last landing for the car (when working in a group)
• language code
• time definitions
• permanent enable-inhibit for each call

A four figures code can be defined to permit the access to the controller. If this code is defined as 0 the controller is accessed freely. Otherwise the code must be entered to access the configuration and to clear time accumulator.

Maintenance personnel can use the T51FA Handheld Auxiliary Terminal (or a laptop) to clear the time accumulator. Two time periods may be defined:

• time between inspections, 0 to 120 days. If defined as 0 this routine doesn’t work. Otherwise, when the time accumulator overflows the configured period the EXT51FA commands all position indicators in a blinking mode.
• Time tolerance between inspections. When the time accumulator content is grater than the sum of the time between inspections plus the time tolerance between inspections the system goes into independent service.

EXT51FA handles:

• call inputs (0 Vdc active)
• registered call outputs (30 Vdc, 50mA)

- PC link for controller configuration

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

- CEA51FA-PCW configuration software

- COO51FA programmable group controller

- EXP51FA-xxx expansion cards

- SSA2-WIN and SSA6-WIN supervisor PC software

- ROM-resident test software for CEA51FA, CEA10 and CEA31

- SIMP3 system simulator

- T51FA Handheld Auxiliary Terminal

- SP51 and SP31 infrared position sensors

- serial communication cables and adapters

- transformers and power supplies

- input/output adapters

- Service Manual - MCEA51FA-M

- Programming Manual - MCEA51FA-C

- T51FA Handheld Auxiliary Terminal Manual- MT51FA-U

- Group Supervisor COO51FA Manual - MCOO51FA-U

- PC Supervision Software for Elevators

- Elevator Controller’s Accessories Manual

POWER INPUT

EXT51FA accepts AC or DC power input:

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

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

- 3*20 Vac 50/60 Hz CA1, CA2, CA3, MA inputs

- Maximum power input 20 VA

Standard EXT51FA configurations have one unique wire for each call input and call recognition lamp output. A simple circuit is shown in Fig. 2. In this case the LED lamp lights when the push button is actuated and also when the output open collector transistor in the EXT51FA closes to ground. In the circuit in Fig. 3, with RX =0, the lamp lights only through controller command. With other values of RX the lamp will light with correspondingly different intensities in each case.

EXT51FA 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.

Controller software verifies call button state. EXT51FA ignores any call button closed for a time interval longer than 25 seconds. Normal state is restored when call button opens.

Some fail states can be cleared by pushing a call (car and/or hall call). In that cases the output command to the lamp has a duty cycle of 90%, that is seen at the lamp. The circuit of Fig. 4 or a similar one may be used to eliminate the flickering. The 90% duty cycle is needed to recognize an actuated push button when a call is already memorized by the controller. Any kind of filter that sets the pin to ground cannot be used. (Output circuit at the EXT51FA is an open collector darlington with 10 Kohms to +24 Vdc).

Any call button can be permanently masked when configuring the controller or through some T51FA

Handheld Auxiliary Terminal commands.

EXT51FA is the hall call buttons input and output controller when there is only one button for each directional hall call (one for up call and another one for down call). Calls are input to the system in a EXT51FA controller. Calls are transmitted to the COO51FA through FO port. COO51FA analyzes each call and accepts or rejects the call (calls may be inhibited from PC supervisor). Each accepted hall call is transmitted to the EXT51FA to command call recognition lamp. "Not independent hall calls" must be selected when configuring CEA51FA car controllers.

The same case arises when several hall call buttons for each call (one for each hoistway) are wired in parallel.

EXT51FA has 10 output relays. Each one (R1 to R10) can be configured to any listed relay function in the configuration of the COO51FA group controller. EXT51FA executes the relay configuration present at the COO51FA configuration file.

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

SPECIFICATIONS

Intel 87C51 or similar

32 kbyte ROM

32 kbyte SRAM

512 byte EAROM

48 Digital input/output Pins ES1 to ES48 (1)

0 V Active Inputs

Input load: 10 Kohm to +24 Vdc

Input current: -2.4 mA

"0" threshold: 17 Vdc

"1" threshold: 8 Vdc

Software Filter: 100 ms

Open Collector Outputs

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

Maximum ratings: 80 mA, 30 Vdc

10 Output Relays R1 to R10 (NA, COMMON, NC) (1)

Maximum ratings: 2 A @ 250 V ac

Indicator: Led

TTL Serial Port

Used pins: RX, TX

Flat cable header connector

Optical Fiber Serial Port

1 mm plastic optical fiber connectors, RX, TX

Indicators: Led

Power Supply MA, CA1, CA2, CA3 (1)

Voltage: 24 Vdc or 2x20 Vac, 50/60 Hz or 3x20 Vac, 50/60 Hz

Maximum power input: 20 VA

Indicator: Led

48 Digital input/output Pins ES49 to ES96 (1)

0 V Active Inputs

Input load: 10 Kohm to +24 Vdc

Input current: -2.4 mA

"0" threshold: 17 Vdc

"1" threshold: 8 Vdc

Software Filter: 100 ms

Open Collector Outputs

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

Maximum ratings: 80 mA, 30 Vdc

Power Supply MA, CAE1, CAE2 (1)

Voltage: 2x20 Vac, 50/60 Hz

Maximum power input: 10 VA

Indicator: Led

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

Dimensions: 325 mm * 262 mm base, 47 mm height (76 mm with expansion board mounted)

Weight: 1100 g (1200 g with expansion board mounted)

Cabinet: Aluminum

See Fig. 12

MA 0V dc or neutral of secondary transformer winding

CA1, CA2, (CA3) +24 Vdc or end points of secondary transformer winding: 20+20(+20) Vac

Up calls

Down calls

NA normally open contact

C common

NC normally closed contact

See Relay Definition Table

TXO output connector

RXO input connector

EXT51FA saves special events in a non-volatile EAROM memory area. Last 50 events are stored in a LIFO ordered file. This file can be read at the PC monitor using the PC configuration software or at T51FA

Handheld Auxiliary Terminal quartz crystal display.

Each line in the file contains the sequential line number, the landing where the event was recorded, the code of the event and a brief description.

Code Description

FP The controller is not configured

EN Power is applied to the controller

CC Configuration has changed

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

- identification of the system : up to forty (40) characters

- series number : 1 to 65535

- controller type:

slave controller in a duplex system or group command

controller for an isolated elevator

master controller in a duplex system

(hall calls controllers are configured by COO51FA group controller)

- number of landings: 2 to 40

- language code: it applies to the messages at the T51FA Handheld Auxiliary Terminal.

This port has a dual row 10 pin header connector.

1 MS (mode selection)

3 TX (transmission)

4 MA (common)

5 RX (reception)

6 +5V

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

A 1 mm diameter plastic fiber optic cable is used to communicate to COO51FA supervisor. Fiber must be carefully cut with a blade, and inserted in the quick-fix connector without stripping.