Motion 3000ES Escalator Control
60 Manual # 42-02-E001
Uflt Multi module drive: Unidentified fault
171
Check all interconnecting cables between power modules Ensure cables are routed away from
electrical noise sources
UP div0 Onboard PLC program attempted divide by zero
90 Check program
UP OFL
Onboard PLC program variables and function block calls using more than the allowed RAM space
(stack overflow)
95 Check program
UP ovr Onboard PLC program attempted out of range parameter write
94 Check program
UP PAr Onboard PLC program attempted access to a non-existent parameter
91 Check program
UP ro Onboard PLC program attempted write to a read-only parameter
92 Check program
UP So Onboard PLC program attempted read of a write-only parameter
93 Check program
UP udf Onboard PLC program un-defined trip
97 Check program
UP uSEr Onboard PLC program requested a trip
96 Check program
UV DC bus under voltage threshold reached
1
Check AC supply voltage level Drive voltage rating (Vac)
Under voltage threshold (Vdc)
Table 20. CT Drive Fault Displays
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