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Faults and Alarms
14.2
Alarms
Param-
Alarm
Description
No.
No.
Bit No.
A001
Comp. time
P953
CU board comp. time utilization too high
0
A015
Ext. alarm 1
P953
Parameterizable, external alarm input 1
14
has been activated
A016
Ext. alarm 2
P953
Parameterizable, external alarm input 2
15
has been activated
A017
Power supply of the power section
P954
An UCE error is detected during pulse disable. The
0
power supply of the power section is interrupted.
A020
Overcurrent
P954
An overcurrent has been detected.
3
A021
Overvoltage
P954
A DC-link overvoltage condition has been detected.
4
A022
Inv.temp.
P954
The alarm activation threshold has been exceeded.
5
A025
I2t- inv.
P954
The inverter will be thermally overloaded if it
8
continues to operate under the current load
conditions.
14-6
An alarm message is periodically displayed on the PMU by A=alarm
and a 3-digit number. An alarm cannot be acknowledged. It is
automatically deleted once the cause has been removed. Several
alarms can be active simultaneously, in which case they are displayed
one after another.
If the AFE inverter is operated with the OP1S control panel, the warning
is displayed in the bottom line of the operation display. The red LED
also flashes (refer to the OP1S Operating Instructions).
Alarm messages
Check r725 Available computation time.
Increase P308 Sampling time
External alarm is active. Check whether the lead to
the appropriate digital input is interrupted.
Check parameter P588 Src No Ext Warn1
See section "Digital inputs" in Operator's Guide
External alarm is active. Check whether the lead to
the appropriate digital input is interrupted.
Check parameter P589 Src No Ext Warn2.
See section "Digital inputs" in Operator's Guide
Check the power supply of the power section.
Check the driven load for an overload condition.
• Are the dynamic requirements too high?
Check the line voltage.
• Are the dynamic requirements too high?
Check r011 AFE temperature.
Measure inlet or ambient air temperature. Apply
reduction curves when theta >40 ºC.
See section "Technical Data" in Operator's Guide
Check
• whether fan -E1 is connected and/or rotating in
the correct direction.
• the air inlet and outlet openings for dirt/blockage.
• the temperature sensor connected to -X30
Check whether the rated output current or peak
current (operating class II) is (was) too high.
Check r010 AFE Utilization
6SE7087-6CX86-2BA1
Operating Instructions SIMOVERT MASTERDRIVES AFE
06.2005
Remedial measures
Siemens AG
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