5
Electrical installation
VR forced cooling fan
Operating Instructions – CM3C63 – 100
87
INFORMATION
The temperature sensor is unipolar which means that interchanging the incoming
cables does not change the measurement result.
Typical characteristic curve of PT1000
:
0
200
400
600
800
1000
1200
1400
1600
1800
2000
-50
0
50
100
150
200
[Ω]
[°C]
X
The insulating system is dimensioned for Class F (145 °C). The maximum resistance
value for protection against overheating of the motor winding is 1555 Ohm.
5.13
VR forced cooling fan
The synchronous servomotors size CM3C71 – CM3C100 can be equipped with a VR
forced cooling fan as an option.
Adhere to the minimum clearance of 100 mm to the machine environment – even with
motors with forced air cooling – so that the flow of hot air is not obstructed.
If required, remove any deposits or dirt from the motor. Dirt on the motor surface
causes reduced heat dissipation and can therefore cause thermal motor overload.
INFORMATION
The forced cooling fan can only be used up to a maximum oscillation and
shock load of 1 g.
26870460/EN – 05/2021
