Carrier HS070-160 manual Modules

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 R E L A Y M O D U L E (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) ~ 00 DSIC) (Relay Module) ~ 32 I”~610 [IiXV Driver Module) -- 50

If a]] modules indicate a communication failure, check the COM hq ~)l~tg on the PSI0 module for proper seating. lf^ :r good connection is assured and the condition per- sists, replacr the PSI0 module.

Xf 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

2 3