Helios InlineVent SKR EC serie Montage- Und Betriebsvorschrift Seite 40

Installation and Operating Instructions
EN
m
WARNING
nm
EC Rectangular Centrifugal Fans – InlineVent
LED Code Relay K1 *
7 x Inactive, 11 -
14 interrupted
8 x Inactive, 11 -
14 interrupted
Active, 11 -
9 x
14 bridged
Cause /
>> Explanation
IC undervoltage
If the intermediate circuit voltage falls below the
set limit value, the unit is deactivated.
IC overvoltage
If the intermediate circuit increases above the
set limit value, the motor is deactivated.
>> Cause – input voltage too high or regenera-
tive motor operation.
IGBT cooling period
18
® KR EC ... / SKR EC ...
Controller response /
>> Repair
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
If the intermediate circuit voltage falls
below 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.
IGBT cooling period for approx. 60 sec.
Definitive deactivation after 2 cooling
periods ð Code 6.