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
fi
xed 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
fi
xed
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
fi
xed 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
fi
xed
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
fi
xed 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
fi
xed 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
fi
xed 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
