Troubleshooting - rosenberg CI serie DV...G serie Betriebsanleitung

18.1

Troubleshooting

Fault
Fan is not rotating or
stops after a various
time.
34
Possible cause
No supply voltage present or
missing of a single phase.
Missing setpoint.
Missing enable signal.
(if in wiring diagramm present)
Internal protective feature has
tripped. (Failure can be read
out with the Software "EC-
Param" if necessary)
Action
Check the supply voltage directly on the fan.
If not all phases are measureable check the
fuses and the wiring of the service switch.
Check the setpoint and its correct polarity.
Check the 24VDC between "Enable" and GND
clamps.
"Under voltage" –
Input voltage falls below the
tolerance limit of the specified line voltage.
Check main supply and fuses.
 Failure is automatically reset after the volt-
age rises above the minimum limit.
"Over voltage" –
Input voltage rises above the
tolerance limit of the specified line voltage.
Check main supply and fuses.
 Failure is automatically reset after the volt-
age fall under the maximum limit.
"Locked rotor"
Check the fan impeller for overload caused by
dirt or foreign matters and turn by hand. Check
fastenings of motor and nozzle.
 Reset failure
"Over temperature electronic"
Control the airflow temperature and ambient
temperature for its limits.
 Failure is reset automatically after the tem-
perature is cooled down to a normal level.
"Over temperature motor"
Control the airflow temperature and ambient
temperature for its limits.
Check the fan impellers for overload caused by
dirt or foreign matters.
 Reset failure
"Failure in power section" – current or voltage
rise to a critical level.
Check main supply and fuses.
 Reset failure
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