Motor Thermal Protection - Danfoss VLT AQUA Instruction Manual

3 How to Install

3.10.3 Motor Thermal Protection

The electronic thermal relay in the adjustable frequency drive has received UL approval for single motor protection, when par. 1-90
Protection ETR Trip
is set for
For thermal motor protection, it is also possible to use the MCB 112 PTC thermistor card option. This card provides an ATEX certificate to protect motors
in explosion hazard areas, Zone 1/21 and Zone 2/22. Please refer to the
3
3-76
Motor Current
and par. 1-24 is set to the rated motor current (see motor nameplate).
MG.20.P3.22 - VLT
VLT AQUA High Power Instruction Manual
Design Guide
for further information.
®
is a registered Danfoss trademark
Motor Thermal