Chapter 9. Diagnostics
416 PACSystems* RX7i, RX3i and RSTi-EP CPU Programmer's Reference Manual GFK-2950C
9.4.17 CPU Over-Temperature (Group 24)
Default action: Diagnostic. Configurable.
1, Over-Temperature failure.
CPU’s normal operating temperature exceeded.
Correction
Turn off CPU to allow heat to disperse and install a fan kit to regulate temperature.
9.4.18 Power Supply Fault (Group 25)
Action: Non-configurable.
1, Power supply failure.
Unknown power supply failure.
Correction
Replace power supply module.
2, Power supply overloaded
The load on the power supply has reached its rated maximum
Correction
Replace power supply with a higher capacity model or reconfigure system to reduce load on power
supply.
3, Power supply switched off
The switch on the power supply was moved to the OFF position.
4, Power-supply has exceeded normal operating temperature
The temperature of the power supply is a just a few degrees from causing it to turn off.
Correction
Turn off system to allow heat to disperse. Install a fan kit to regulate temperature.
9.4.19 No User Program on Power-Up (Group 129)
The fault group No User Program on Power-Up occurs when the CPU powers up with its memory
preserved but no user program exists in the CPU. The CPU detects the absence of a user program on
power-up; the controller stays in STOP Mode.
Action: Non-configurable.
Correction
Download an application program before attempting to go to RUN Mode.
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