Tyco CCU/IO-485 Guide de configuration

1of 9 REF: CCU/IO-485.DOC REV: C June 20, 2000

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AUSTRALIA

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Fax: +61 7 3318 6905

CCU/IO-485 ( and CCU/I-485 ) Install Instructions

Part #: CCU/IO-485 ( or CCU/I-485 )

This equipment is designed for installation and service by fully qualified field engineers. No user

serviceable or installation parts inside.

Description:

CCU/IO-485 :

The CCU/IO-485 has 8 relay outputs and 8 supervised inputs.

CCU/I-485 :

The CCU/I-485 is exactly the same as the CCU/IO-485 except that the 8 outputs on the

CCU/IO-485 are replaced with 16 unsupervised inputs. Any CCU/IO-485 mentioned in this

document may be replaced with a CCU/I-485. This document will use CCU/IO-485s in all of

it’s examples.

Supplied:

1 x CCU/IO-485 board with firmware for RS485/RS232 interface

1 x Mounting Bracket

1 x Power connector for CCU/IO

1 x Supervision relay connector for CCU/IO

1 x RS485 interface connector

You will need:

1 x cable from 24V DC power source to CCU/IO. Connector supplied.

If connecting to CCU/485-IO

1 x RS485 interface cable ( see later for wiring information)

If connecting to CCU/422-IO, CCU/232-IO or CCU/FIBRE-IO

1 x RS232 interface cable (see later for wiring information)

Power Requirements:

Typical: 200mA at 24VDC

Voltage Input: 20-30 VDC

2of 9 REF: CCU/IO-485.DOC REV: C June 20, 2000

Board Layout:

CCU/IO-485:

CCU/I-485: ( Note the outputs are replaced with 2 inputs each. The middle pin on each is 0V. )

3of 9 REF: CCU/IO-485.DOC REV: C June 20, 2000

Installation of CCU/IO-485:

If connecting to CCU/422-IO, CCU/232-IO or CCU/FIBRE-IO -

•If connecting the CCU/IO-485 to a CCU/232-IO, CCU/422-IO or CCU/FIBRE-IO then place

jumpers on JP30 as shown below and connect the RS232 port ( CHN_A ) of the CCU/IO-485 to

port C of the CCU/232-IO, CCU/422-IO or CCU/FIBRE-IO using the following connection

diagram.

CCU/IO-485 RS232 9PIN

(DTE) CCU/232-IO, CCU/422-IO or

CCU/FIBRE-IO Channel C

9PIN (DCE)

2 3

3 2

5 5

JP30

•This configuration only allows one CCU/IO-485 to be connected to the network for each CCU/232-

IO, CCU/422-IO or CCU/FIBRE-IO.

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If connecting to a CCU/485-IO -

•If connecting the CCU/IO-485 to a CCU/485-IO then place jumpers on JP30 as shown below and

connect the RS485 ( SKT33 ) port of the CCU/IO-485 to port A or B of the CCU/485-IO using

the following connection diagram. Up to eight CCU/IO-485 boards can be chained off one channel

of the CCU/485-IO, giving up to 16 CCU/IO-485 boards connected to one CCU/485-IO.

Appendix A contains informatin on wiring for this configuration.

CCU/IO-485 RS485 (SKT33) CCU/485-IO Channel A or B

+R+

-R-

middle pin middle pin

JP30

•This configuration only allows sixteen CCU/IO-485 boards to be connected to the network for each

CCU/485-IO.

5of 9 REF: CCU/IO-485.DOC REV: C June 20, 2000

For all installations -

•For normal operation a jumper should be in place across A on JP20.

•If hardware supervision is required connect the relay output from the CCU/IO-485 to a suitable

input on the FIP (software supervision does not require this). The relay socket is located next to the

power connector. The relays will energise when Supervision failure is detected.

•Connect the 24V DC power source to the supplied connector. The power connector is next to the

CHN_C port. Pin connections are:

PWR (+24VDC) RETURN/COM(0V) BATTERY(24V)

These connections are written on the board. If the 24V power source is Uninterruptible, then

there is no need to connect the BATtery connection.

Pin number Function

1 24V

2 COM

3 BAT

Connecting the inputs and outputs to the CCU/IO-485:

•The outputs on the CCU/IO-485 are relays that have a common ( COM ), normally open ( NO ) and

normally closed ( NC ) output, as shown in the Board Layout ( page 1 ). When the relay is not

energised the common line in shorted to the normally closed line. When the relay is energised the

common line is shorted to the normally open output.

•The inputs on the CCU/IO-485 run off a 20mA loop. To obtain supervision on these inputs a 220

ohm terminating resistor must be added across the remote end. For inputs that are a distance from the

CCU/IO the line should be powered by a higher voltage to allow for line loss ( note that the value of

the supervision resistor also changes ). Refer to Appendix A for details.

Operation of LEDs:

•CHN_A has a Green and a Yellow LED. The green LED glows when the port is operating correctly.

The yellow LED glows when the port is not operating correctly, or there has been supervision failure

on this port.

For the CCU/IO-485:

•Each output relay has two leds associated with it. When the relay is energised and switches the green

LED glows. If the relay fails to switch when it is energised the yellow LED glows.

For the CCU/I-485:

•The LEDs used for the output relay on the CCU/IO-485 are unused on the CCU/I-485.

6of 9 REF: CCU/IO-485.DOC REV: C June 20, 2000

Configuration of CCU/IO:

•You must use the jumpers JP31 (1 to 8) on the CCU/IO to configure the local CCU Node address.

Each CCU Node is numbered sequentially from Address 1. Boards connected to Channel A on the

CCU/485-IO must have addresses from 1 to 8 inclusive. Boards connected to Channel B on the

CCU/485-IO must have addresses from 9 to 16 inclusive. For example if 12 CCU/IO-485s are

connected to a CCU485/IO ( 8 connected on Channel A and 4 on Channel B ), then the 8 CCU/IO-

485s on Channel A will be given the Addresses 1 to 8. The 4 CCU/IO-485s on Channel B will be

given the Addresses 9 to 12. Address 0 CANNOT BE USED. If a CCU/IO-485 is connected to a

CCU/232-IO, CCU/422-IO or CCU/FIBRE-IO, then the CCU/IO-485 must be given an address

of 1. The jumpers are arranged so that they represent the address in the BINARY number system.

Example:

Addr 8 7 6 5 4 3 2 1

1 SHORT

2 SHORT

3 SHORT SHORT

4 SHORT

5 SHORT SHORT

6 SHORT SHORT

7 SHORT SHORT SHORT

8 SHORT

9 SHORT SHORT

10 SHORT SHORT

11 SHORT SHORT SHORT

12 SHORT SHORT

13 SHORT SHORT SHORT

14 SHORT SHORT SHORT

15 SHORT SHORT SHORT SHORT

16 SHORT

You will notice that 6,7 and 8 should never be shorted.

7of 9 REF: CCU/IO-485.DOC REV: C June 20, 2000

For Programming only:

•A PC can be temporarily connected to CHN_A of CCU/IO-485 for programming. Note that this is

a straight through standard RS232 cable for laptops. Jumper JP30 must be set as shown

CCU/IO-485

CHN_A

9PIN (DCE)

PC/LAPTOP

25PIN PC/LAPTOP

9PIN

2 3 2

3 2 3

5 7 5

JP30

•When programming jumpers should be placed across A and across B on JP20.

8of 9 REF: CCU/IO-485.DOC REV: C June 20, 2000

Appendix A -Wiring for RS485 chain:

1 2 3 4

4321

CCU-Net ( A data collection , transportation and control network)

Connecting CCU/IO cards to a CCU/485-IO

CCU/485-IO

Power

Supervisory

485 Chn A

485 Chn B

RS232 Serial Port

RXA+

RXA-

SCREEN A IN

IN1

Screw

Terminals

RXB+

RXB-

SCREEN B IN

Screw

Terminals

Relay

Connection.

Connect to CCU-NET

Connector

Terminating Resistor

Terminating resistor

at CCU/485-IO

at Final CCU/IO.

Calculating the Value of the Terminating Resistor.

Terminating Resistor = 2 * transmission line impedance.

Example 1: for 50 Ohm individually screened pair data cable use 100 Ohm resistors.

Example 2: for 600 Ohm telephone communications cable use 1200 Ohm resistors.

Note 1: RS485 is designed to use 50 Ohm twisted pair.

Cabling recommendations.

1. Do not run the RS485 within telephone cabling

as this will violate safety of the telephony network.

RS485 power levels and harmonics are far greater

than the minimal level required to prevent cross

induction between audio channels.

RS485 will produce an annoying data stream buzz

on audio channels and subsequent complaints.

2. The greatest transmission length can be achieved

with twisted pair , low capacitance , screened

data grade 50 Ohm cable.

By using good quality cable and avoiding sources of

noise such as transmitters and mains cables a distance

of around 50 metres is possible. Each node added to

3. Before working on the cable check the DC and

AC voltage levels with a suitable multimeter.

This may save your life in the event that the data

cable has inadvertently become connected to a

source of power.

the network reduces the overall cable length.

485-

COM

485+

RS232-A

CCU/I or CCU/IO

IN1

IN2

IN3

IN4

IN5

IN6

IN7

IN8

DCE

485-

COM

485+

RS232-A

CCU/I or CCU/IO

IN1

IN2

IN3

IN4

IN5

IN6

IN7

IN8

9of 9 REF: CCU/IO-485.DOC REV: C June 20, 2000

Appendix B -Supervised inputs on a CCU/IO-485:

1 2 3 4

4321

COM

485-

COM

485+

BAT

COM

+24V

RS232-A

CCU/IO

Connecting inputs to a CCU/IO board.

212V Supply

224V Supply

-0V

+24V

+12V 24V to 12V PSU

330 Ohm

Supervision

Resistor

Opens on detect

or power loss.

IN1

+5V 330 Ohm Transient

Isolation Resistor

IN1

IN2

IN3

IN4

IN5

IN6

IN7

IN8

To RS485 Port A on CCU/485-IO

Normally Closed Contact

220 Ohm

Supervision

Resistor

Opens on detect

or power loss.

IN1

+5V

Normally Closed Contact

Connection for short runs ( up to 4m )

Connection for longer runs ( over 4m )

Provides greater transient protection. 1K Ohm

Supervision

Resistor

Opens on detect

or power loss.

910 Ohm Transient

Isolation Resistor

Normally Closed Contact

Alternate connection for longer runs ( over 4m )

Provides greater transient protection.

IN1

+5V

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