Display Code
Relay
K1
Explanation
Reaction of device
Adjustment
Temp. Man-
ager
2
energized 13 - 14
bridged
Temperature management active
The device has an active temperature
management to protect it from damage
due to too high inside temperatures. In
case of a temperature rise above the
fixed limits, the modulation is reduced
linearly. To prevent the complete system
being switched off externally (in this op-
eration permissible for the controller) in
case of reduced operation due to too
high an internal temperature, no fault
message is sent via the relay.
With a drop in temperature the modula-
tion rises again llinear.
Check cooling of the controller.
Line Fault 4
de-energized, 13 -
14 interrupted
Line failure
The device is provided with a built-in
phase-monitoring function for the mains
supply. In the event of a mains interrup-
tion (failure of a fuse or mains phase) the
unit switches off after a delay (approx.
200 ms).
Only functioning with an adequate load
for the controller.
Following a shutoff, a startup attempt is
made after approximately 5 seconds, if
the voltage supply is high enough. This
keeps occurring until all 3 supply phases
are available again.
Check line voltage.
IGBT Fault
Earth fault
6
de-energized, 13 -
14 interrupted
IGBT Fault
Earth fault or short-circuit at inverter out-
put.
The device switches off, renewed at-
tempt to start after about 60 s
Code 9.
Final switch off when error is detected
after the third start attempt at an interval
< 60 s.
Reset by enable or line voltage ON/OFF.
DC under-
voltage
7
de-energized, 13 -
14 interrupted
Intermediate undervoltage
Intermediate circuit voltage below a fixed
limit for longer than 75 s.
The modulation is switched off immedi-
ately at undervoltage, error message
after 75 s.
Automatic switching back on and switch-
ing off of error message when the voltage
exceeds the fixed limit for at least 5 s.
Check line voltage.
DC overvolt-
age
8
de-energized, 13 -
14 interrupted
Intermediate circuit overvoltage
Intermediate circuit voltage above fixed
limit for longer than 75s.
Reason for excessively high line voltage
or alternator motor operation.
The modulation is switched off immedi-
ately at overvoltage, error message after
75 s.
Automatic switching back on and switch-
ing off of error message when the voltage
drops below the fixed limit for at least 15
s.
Check line voltage.
Prevent generator motor operation.
IGBT warn-
ing
9
energized 13 - 14
bridged
IGBT warning
IGBT cooling down period for approx.
60 sec.
Final shutoff after 2 cooling-off intervals
Code 6.
Communica-
tion
10
de-energized, 13 -
14 interrupted
Communication fault
MODBUS communication interrupted
description MODBUS communication
Line under-
volt.
12
de-energized, 13 -
14 interrupted
Line voltage too low
Line voltage below a fixed limit for longer
than 75 s.
The modulation is switched off immedi-
ately at undervoltage, error message
after 75 s.
Automatic switching back on and switch-
ing off of error message when the voltage
exceeds the fixed limit for at least 5 s.
Check line voltage.
Operating Instructions Fcontrol Basic – model series FSDM2.5..50AM Events / Fault signals
L-BAL-E174-GB 1704 Index 005 Part.-No.
41/49
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