Installation and Operating Specification FU Comfort Sinus
Indications via relays K1+K2 in emergency mode (Protection Mode activated)
Display/symbol
Relay:*
K1
No shut-
down
Motor fault
Line Fault
UI Bootload
MC Bootloader
Error MODBUS Com
Communication
DS2502
NTC Error
Earth fault
IGBT temp.
IGBT Fault
Sinefilter
Overload 2
DC overvoltage
L-BAL-E304-GB 2004
Operating state/fault
K2
With shut-
down
Emergency mode activated, no
0
0
fault
Tripping of connected thermostat
1
0
or thermistor, or interruption be-
tween terminals "TB/TP".
The controller has built-in phase
0
1
monitoring.
Fault bootload process display,
0
0
communication fault.
Fault bootload process of the
motor controller. I.e. the motor con-
0
1
troller program could not be loaded
or started.
MODBUS communication faulty
1
0
(timeout)
Internal communication fault be-
0
1
tween control unit and power unit
Data memory on power unit cannot
0
1
be read
Cable break to internal NTC resis-
0
0
tor
Short-circuit at motor connection to
0
1
earth
Temperature of the heat sink too
1
0
high
Overload shutoff
0
1
Short-circuit between the motor
lines
Sine filter temperature too high
1
0
(only in version with integrated sine
filter)
The device was operated for too
1
0
long with too high current (> rated
current).
1
0
To high DC-link voltage
Part.-No.
134/139
Behaviour in protection mode
no message
A motor fault does not cause modulation
to be switched off and the frequency con-
verter output remains active
=> Indication via relay K1
In the event of a mains fault (failure of a
fuse or supply phase), the device
switches off after a delay (approx. 5 sec-
onds).
=> Indication via relay K2
No shutdown
=> No indication via relay K1 + K2
The unit cuts out and does not switch on
again.
=> Indication via relay K2
No shutdown
=> Indication via relay K1
Automatic controller reset
=> Indication via relay K2
The unit cuts out and does not switch on
again.
=> Indication via relay K2
No shutdown
=> No indication via relay K1 + K2
The device switches off, restarts after
approx. 60 s.
Final switch-off after three successive at-
tempts (resp. < 60 s).
=> Indication via relay K2
No shutdown
=> Indication via relay K1
The device switches off, restarts after
approx. 60 s.
Final switch-off after three successive at-
tempts (resp. < 60 s).
=> Indication via relay K2
No shutdown
=> Indication via relay K1
No shutdown
=> Indication via relay K1
No shutdown
=> Indication via relay K1
Enclosure