Fault-Finding Procedures; Pm8Xx Processor Unit - ABB AC 800M Hardware And Operation

Fault-Finding Procedures

8.
Fault-Finding Procedures

PM8xx Processor Unit

F(ault) LED is ON
R(un) LED is OFF
B(attery) LED is flashing
128
Check that the relevant LED lights up.
Table 21. PM8xx – Fault-Finding Procedure
Fault Possible Cause and Corrective Action
Controller Re-start, (INIT), in progress.
• Wait for Controller restart to finalize.
If condition persists:
• Check the CEX-bus fuse.
• Check for a unit failure on the CEX-bus.
See Fault-Finding,
Table 25 on page 131,
Table 27 on page 135 and
138.
No application loaded on the Controller.
• Load application.
• Restart Controller (INIT push button).
Controller application failed.
• Reload application.
• Restart Controller (INIT push button).
Battery power (Internal or External) is below an
acceptable level or non-existent.
• Install new battery.
External battery cable disconnected.
• Connect external battery cable.
See Fault-Finding Table 23
Section 5 Maintenance
Table 24 on page 130,
Table 26 on page 134,
Table 30 on page
on page 129.
3BSE 027 941 R301