Display
Cause
Reaction of Controller
Remedial measures
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 o
ff
externally (in this operation
permissible for the controller) in case of
reduced operation due to too high an inter-
nal temperature, no fault message is sent
via the relay.
Limits: Capacitor temperature 75
°
C, heat
sink temperature 90
°
C.
The active temperature management is
signalled by an illuminated triangle in the
display (
multifunction LC display).
At sinking temperature the controller re-
starts.
Check the temperature in the device via
diagnostic menu.
Check cooling of the controller.
Sine
fi
lter
Sine
fi
lter to hot
Switch OFF at 150
°
C, switch ON when
cooled down to 70
°
C.
Check temperature in controller, Check
cooling of the controller.
IGBT Fault
The controller was switched o
ff
by the cur-
rent limitation.
Controller turns the motor o
ff
. There is a
renewed attempt to start after about one
minute.
Check motor and brake function.
Earth fault
Shortcut earth, that means Shortcut be-
tween one motor wire and PE
The unit cuts out and does not switch on
again.
Disconnect the device from mains.
Check motor wires.
A permanent shortcut earth can dam-
age the device!
DC-Voltage
DC overvoltage because of shortcut earth
at switch-on.
The unit cuts out.
Disconnect the device from mains.
Check motor wires.
Operating Instructions
Fcontrol
–
model series FTET4/6/10AHMQ
Malfunctions / trouble shooting
L-BAL-E094-GB 2022/47 Index 007
Part.-No.
40/46
