Rockwell-automation 57C435 Processor Module, AutoMax Bedienungsanleitung PDF herunterladen (Seite 28)

5Ć2

b) Turn on power to the Rack. If the P/S FAULT LED

turns on, the problem lies in the Rack backplane.

Go on to step 2c.

If the P/S READY LED does not light, the Power

Supply module is malfunctioning and needs to be

replaced.

c) Turn off power again. Wait until all LEDs on the

faceplate of the Power Supply module have gone

out. Use a screwdriver to disconnect the terminal

strip from the Power Supply module. Do not

remove the wires from the terminal strip.

d) Remove the module from the Rack and verify that

card edge connectors are clean and that the

connectors on the backplane are in good

condition.

e) ReĆinsert the Power Supply module. Use a

screwdriver to reĆconnect the terminal strip to the

Power Supply module. Turn on power to the Rack.

If the problem is not corrected, replace the Rack.

B. If you are using Power Supply M/N 57C493:

The FAULT LED on the Power Supply module should

always be off when input power is on, the Power

Supply output voltage is within proper limits, and the

watchdog alarm coming from the backplane is not

active. If the Power Supply FAULT LED is on, use the

following procedure to isolate the problem.

a) Turn off power to the rack and all connections.

b) Replace the Processor module whose OK LED was

off.

c) Turn on power to the rack. If the Power Supply

FAULT LED turns on, the problem is with the Power

Supply.

Step 3. Verify that the power supply output is sufficient to power

all of the modules in the rack.

Check the total power requirements for the modules in the

rack against the power supply output.

5.2 The BAT. OK" LED Is Off

Problem: The BAT. OK" LED on the Processor module faceplate is

off. The possible causes of this problem are the following:

D the tape covering the battery has not been removed

D the battery is not facing in the proper direction

D the battery is missing

D the battery is malfunctioning

D the power supply is malfunctioning

To correct the problem, first turn off power to the rack. Refer to steps

1Ć3 in section 3.4 for instructions on taking the Processor module out

of the rack to inspect the battery. If the tape is still covering the

battery, remove it. If the battery is missing or not facing in the proper

direction, insert the battery with the +" end facing the +" marking

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