KFU 2-/4-
238
20
Operational and Error Diagnosis
Operation of the frequency inverter and the connected load are monitored continu-
ously. Various functions document the operational behavior and facilitate the opera-
tional and error diagnosis.
20.1 Status
Display
The green and red light-emitting diodes give information about the operating point of
the frequency inverter. If the control unit is connected, the status messages are addi-
tionally displayed by the display elements RUN, WARN and FAULT.
Status Display
green LED red LED Display
Description
off
off
-
No supply voltage.
on
on
-
Initialization and self-test.
flashes
off
RUN flashes
Ready for operation, no output signal.
on
off
RUN
Operating
message.
on
flashes
RUN
+
WARN Operational message, current
warning
269
.
flashes
flashes
RUN
+
WARN Ready for operation, current
warning
269
.
off
flashes
FAULT
flashes
Last error
310
of frequency inverter.
off
on
FAULT
Last error
310,
acknowledge fault.
20.2 Status
of
Digital Signals
The status display of the digital input and output signals enables checking of the vari-
ous control signals and their assignment to the corresponding software functions, in
particular during commissioning.
Coding of the status of the digital signals
Assignment:
Bit
7 6 5 4 3 2 1 0
Control sig.
8
Control sig.
7
Control sig.
6
Control sig.
5
Control sig.
4
Control sig.
3
Control sig.
2
Control sig.
1
