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EC axial high-performance fans HQ.. EC / HRF.. EC / HW.. EC
Installation and Operating Instructions
LED code
Relay K1 *
Cause /
>>
Explanation
Controller response /
>>
Repair
OFF
Inactive, 11
14 interrupted
No mains voltage
Mains voltage available?
>>
Unit switches “off” and back “ON“
automatically when the voltage is
restored
ON
Active, 11 -
14 bridged
Normal operation without disturbance
1 x
Active, 11 -
14 bridged
No enable = OFF
Terminals “D1” - “24 V / 10 V” (digital In 1)
Not bridged.
Deactivation via external contact
(
ð
digital input).
2 x
Active, 11 -
14 bridged
Active temperature management
In order to protect the unit from damage due
to internal temperatures which are too high, it
has an active temperature management sy-
stem. In case of a temperature increase above
the set limit value, the modulation reduces on
a linear scale. In order to prevent external de-
activation of the complete system in case of
reduced operation due to internal temperatu-
res which are too high (in case of this permis-
sible operation for the controller), an error
message is not issued via the relay.
If the temperature drops, the modulation
increases on a linear scale.
>>
Controller cooling control!
3 x
Inactive, 11 -
14 interrupted
HALL-IC
Incorrect signal from Hall-ICs, error in the
commutation.
>>
Incorrect internal connection
Controller deactivates motor. Automatic
restart if no more faults are detected.
>>
Exchange fan / motor!
4 x
Inactive, 11 -
14 interrupted
Phase failure
(only for 3 ~ types)
The controller has integrated phase monito-
ring, and in case of mains fault (blown fuse or
phase failure), the unit deactivates with a delay
(approx. 200 ms). Only works if controller is
sufficiently loaded.
After deactivation, the unit is restarted
after approx. 15 sec. if there is a suffi-
cient power supply. This takes place until
all 3 mains phases are available.
>>
Check power supply!
5 x
Inactive, 11 -
14 interrupted
Motor blocked
If commutation is present and no speed > 0
is measured for 8 sec., the “Motor blocked”
error is triggered.
EC Controller deactivates, restart after
approx. 2,5 sec.
Definitive deactivation if fourth restart is
unsuccessful.
>>
Reset by disconnecting the mains
voltage then required.
>>
Check whether motor can rotate
freely.
6 x
Inactive, 11 -
14 interrupted
IGBT fault
Ground fault or short circuit in the motor
winding
EC Controller deactivates, restart after
approx. 60 sec. ->Code 9.
Definitive deactivation if another error is
detected within 60 sec. after the second
restart.
>>
Reset by disconnecting the mains
voltage then required!
7 x
Inactive, 11 -
14 interrupted
IC undervoltage
If the intermediate circuit voltage falls below
the set limit value, the unit is deactivated.
If the intermediate circuit voltage increa-
ses above the limit value again within 75
sec., the unit is automatically restarted.
If the intermediate circuit voltage stays
below the limit value for longer than 75
sec., the unit is deactivated with an error
message
8 x
Inactive, 11 -
14 interrupted
IC overvoltage
If the intermediate circuit increases above the
set limit value, the motor is deactivated.
>>
Cause – input voltage too high or regene-
rative motor operation.
If the intermediate circuit voltage falls be-
low the limit value again within 75 sec.,
the unit is automatically restarted.
If the intermediate circuit voltage stays
above the limit value for longer than 75
sec., the unit is deactivated with an error
message.
9 x
Active, 11 -
14 bridged
IGBT cooling period
IGBT cooling period for approx. 60 sec.
Definitive deactivation after 2 cooling periods
ð
Code
IGBT cooling period for approx. 60 sec.
Definitive deactivation after 2 cooling pe-
riods
ð
Code 6.
„Blink“ code diagnostics
E
