Carrier HS070-160 Manuel d'utilisateur télécharger pdf (Page 23)

Modules

Turn controller power off before servicing

tha

controls. This is to ensure safety and prevent damage

to the controller.

PROCESSOR MODULE (PSIO), LOW-VOLTAGE

RELAY MODULE (DSIO) AKD EXV DRIVER

MODULE (DSlO)

The

PSI0

and DSIO modules all

perform continuous diagnostic evaluations of the condi-

tion of the hardware. Proper operation of these modules

is indicated by LEDs (light emitting diodes) on the front

surface of the DSlOs and on the top horizontal surface

of the PSIO.

Red LED:

B/inking

c.ontinuous1.i.

at a 3 to 5 second rate indicates

proper operation

Lit

covzlinrrous/~r~

indicates a problem requiring replace-

ment of the module

Qf~corttinuous(~~

indicates the power

shouId

be checked.

If there is no input power, check fuses. If fuse is bad, check

for shorted secondary of transformer, or for bad module.

Green LED: (On a PSIO, this is the green LED closest to

the COMM connectors. The other green LED on the

module indicates external communications, when used.)

The green LED should always be blinking

when

patvcr

is on; it indicates that the modules are communicating

properly. If a green LED is not blinking, check

the

red

LED. If the red LED is normal, check the module address

switches. See Fig. 9. The proper addresses are:

PSI0

(Processor Module)

DSIC) (Relay Module)

I”~610

[IiXV Driver Module) -- 50

a]]

modules indicate a communication failure, check

the COM

~)l~tg

the

PSI0

module for proper seating.

lf^

good

connection is

assured

and the condition per-

sists, replacr the

PSI0

module.

only a

ITS;;10

module indicates a communication

failure, check the COhlM plug on that module for proper

seating. If a good connection is assured and the condition

persists.

rcpIace

the

DSl0

module.

All

system

operating inteiligcnce rests in the

PSI0

module (processor

moddej,

the modttlc that controls

the unit. This

mod&

monitors conditions through input

and output ports and through tire DSlO modules (low-

voltage relay module and I:XV

driv!er

module).

The machine operator communicates with the micro-

processor through

the

IIS

module (keyboard;!dinplay

module). Communication between

the

PSI0

and the

other modules is accomplished by a

3-vvire

~tn~or

bus.

These 3 wires run in

p~trallel

from module to module.

Each module in a panel is numbered (1. 2, 3,..). Each

terminal strip on a module is labeled (J2, J3,

.J4...).‘I’he

terminal strip number on the machine schematic com-

bines the module and strip numbers. For example, 253 is

terminal strip 53 on module 2. The module numbers can

be found on the component arrangement label.

PSlO

ADDRESS

SELECTOR

Fig.

‘l2

Module Address Selector Switch

Locations

1 2 ... 18 19 20 21 22 23 24 25 26 27 28

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Carrier HS070-160 Manuel d'utilisateur Page 23

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