Motor External Fan - Danfoss VLT Programming Manual

3 Parameter Description
3
In order to maintain PELV, all connections made to the control terminals must be PELV, e.g. thermistor must be reinforced/ double
insulated
NB!
Danfoss recommends using 24 VDC as thermistor supply voltage.

1-91 Motor External Fan

Option:
[0] * No
[1] Yes
58
Function:
No external fan is required, i.e. the motor is derated at low speed.
Applies an external motor fan (external ventilation), so no derating of the motor is required at low
speed. The graph below is followed if the motor current is lower than nominal motor current (see
Motor Current
par. 1-24 ). If the motor current exceeds nominal current, the operation time still
decreases as if no fan were installed.
MG.11.C9.02 - VLT ® is a registered Danfoss trademark
®
VLT HVAC Drive Programming Guide