[7] ETR warning 3 See [3]
[8] ETR trip 3 See [4]
[9] ETR warning 4 See [3]
[10] ETR trip 4 See [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: Function:
[0]
*
No No external fan is required, i.e. the motor is derated at low
speed.
[1] Yes Applies an external motor fan (external ventilation), so no de-
rating 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 in-
stalled.
2. Parameter Description VLT
®
AQUA Drive Programming Guide
56
MG.20.O2.02 - VLT
®
is a registered Danfoss trademark
2
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