Danfoss VLT FC 100 Series Programming Manual page 49

®
VLT HVAC Drive Programming Guide
[8] ETR trip 3
[9] ETR warning 4
[10] ETR trip 4
ETR (Electronic Thermal Relay) functions 1-4 will calculate the load when the set-up where they were selected is active. For example ETR starts calculating
when setup 3 is selected. For the North American market: The ETR functions provide class 20 motor overload protection in accordance with NEC.
1-91 Motor External Fan
Option:
*
No
[0]
[1] Yes
See [4]
See [3]
See [4]
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 par. 1-24). If the motor
current exceeds nominal current, the operation time still decreases as if no fan were installed.
MG.11.C5.02 - VLT ® is a registered Danfoss trademark
3. Parameter Description
49
3