6.34.6 Fan failure
It is possible to activate an alarm if the fan does not start. The fan failure alarm appears if the running feed-
back from the fan does not appear. In parameters 6590 to 6620, the fan failure alarms are set up for fans A to
D.
6.34.7 Fan priority (running hours)
The priority of the fans A to D rotates automatically from 1
st
to 4
th
priority. This is done automatically, be-
cause the running hours of the fans are detected and are used for the rearranging.
M-Logic setup:
If the fan unit is raising a signal that is led to a digital input on the AGC when it is running, then the following
M-Logic must be programmed:
When it is not possible to get a running feedback from the fan unit, the internal relay of the AGC must be
used to indicate that the fan is running. If e.g. R26 is the relay for FAN A, the following M-Logic must be pro-
grammed:
The running hour can be reset by entering parameter 6585 and then selecting the desired fan hours to be
reset.
AGC 100 Designer's Reference Handbook
4189340766 UK
Additional functions
DEIF A/S Page 100 of 152
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