5
Electrical installation
Thermal motor protection
Operating Instructions – MOVIGEAR
®
classic
61
5.6
Thermal motor protection
NOTICE
Overheating of the device due to the low thermal time constants of the winding.
Possible damage to property.
•
In addition to the temperature sensor also activate current monitoring (I
2
t, effect-
ive current monitoring), or activate a motor model for thermal protection, provid-
ing your inverter supports such functions.
5.6.1
PK (PT1000) temperature sensor
NOTICE
Damage to the temperature sensor and the motor winding caused by excessive test
currents.
Possible damage to property.
•
Use test currents < 3 mA in the PK (PT1000) circuit. Doing so avoids excessive
self-heating of the temperature sensor and consequently prevents its insulation
and the motor winding from damage.
For detailed information about how to connect the PK (PT1000) temperature sensor,
refer to chapter "Terminal assignment".
25805134/EN – 07/2018
Summary of Contents for MGFAT1-DSM-C/PE
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