Carrier 23XL Dokumentacja Pobierz pdf (Strona 80)

Control Modules

Turn controller power off before servicing controls. This

ensures safety and prevents damage to controller.

The Processor module (PSIO), 8-input (Options) mod-

ules, Starter Management Module (SMM), and the Local In-

terface Device (LID) module perform continuous diagnostic

evaluations of the hardware to determine its condition. Proper

operation of all modules is indicated by LEDs (light-

emitting diodes) located on the side of the LID, and on the

top horizontal surface of the PSIO, SMM, and 8-input

modules.

RED LED — If the LED is blinking continuously at a

2-second rate, it is indicating proper operation. If it is lit con-

tinuously, it indicates a problem requiring replacement of the

module. If the red LED blinks 3 times per second, a soft-

ware error has been discovered and the module should be

replaced. Off continuously indicates that the power should

be checked. If there is no input power, check fuses and the

circuit breaker. If fuse is good, check for shorted secondary

of transformer Or, if power is present to the module, replace

the module.

GREEN LEDs — There are one or 2 green LEDs on each

type of module. These LEDs indicate communication status

between different parts of the controller and the network mod-

ules as follows:

LID Module

Upper LED — Communication with CCN network, if present;

blinks when communication occurs.

Lower LED — Communication with PSIO module; must blink

every 3 to 5 seconds.

PSIO Module

Green LED closest to communications connection — Com-

munication with SMM and 8-input module; must blink con-

tinuously.

Other Green LED — Communication with LID. This green

LED must blink every 3 to 5 seconds.

8-Input Modules and SMM

Green LED — Communication with PSIO module. This green

LED will blink continuously.

Notes on Module Operation

1. The machine operator monitors and modiﬁes conﬁgura-

tions in the microprocessor through the 4 softkeys and

the LID. Communication with the LID and the PSIO is

accomplished through the CCN (Level II) bus. The com-

munication between the PSIO, SMM, and both 8-input

modules is accomplished through the sensor bus, which

is a 3-wire cable. This sensor bus runs in parallel be-

tween modules.

On sensor bus terminal strips, Terminal 1 of PSIO mod-

ule is connected to Terminal 1 of each of the other mod-

ules. Terminals 2 and 3 are connected in the same man-

ner. See Fig. 44-47. If a Terminal 2 wire is connected to

Terminal 1, the system does not work.

2. If a green LED is solid on, check communication wiring.

If a green LED is off, check the red LED. If the red LED

is normal, check the module address switches

(Fig. 44-47). Proper addresses are:

MODULE

ADDRESS

SW1 SW2

LID (Local Interface Device) E6

PSIO (Processor Sensor, Input/Output Module) 5A

SMM (Starter Management Module) 32

8-input Options Module 1 64

8-input Options Module 2 72

If all modules indicate communications failure, check com-

munications plug on the PSIO module for proper seating.

Also check the wiring terminations (Level II — 1:red,

2:wht, 3:blk; Sensor bus — 1:red, 2:blk, 3:clr/wht). If a

good connection is assured and the condition persists, per-

form an Attach to Network Device upload of the PSIO

module. The correct PSIO module address must be known

to perform this function if the Attach to Network Device

selection is not functioning, replace the module.

If only one 8-input module or SMM indicates commu-

nication failure, check the communications plug on that

module. Make sure wiring is properly connected. Com-

munications plug must be connected to the correct socket.

If a good connection is assured and the condition per-

sists, replace the module.

All system operating intelligence rests in the PSIO mod-

ule. Some safety shutdown logic resides in the SMM in

case communications are lost between the 2 modules. The

PSIO monitors conditions using input ports on the PSIO,

the SMM, and the 8-input modules. Outputs are con-

trolled by the PSIO and SMM as well.

3. Power is supplied to modules within the control panel via

21-vac power sources.

The transformers are located within the power panel, with

the exception of the SMM, which operates from a 24-vac

power source and has its own 24-vac transformer located

within the starter.

Within the power panel, T1 supplies power to the LID,

the PSIO, and the 5-vac power supply for the transduc-

ers. The other 21-vac transformer is T4, which supplies

power to both 8-input modules (if present). T4 is capable

of supplying power to two modules; if additional mod-

ules are added, another power supply will be required.

Power is connected to Terminals 1 and 2 of the power

input connection on each module.

Fig. 44 — PSIO Module Address Selector Switch

Locations and LED Locations

1 2 ... 75 76 77 78 79 80 81 82 83 84 85 ... 103 104

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