6 Function & parameter description
Group 3 – Motor control
Lenze · Inverter i510 / i550 - Cabinet · Operation Manual · 0.4 EN · 02/2016 63
6.5.10 Motor temperature sensor
For detecting and monitoring of the motor temperature, a PTC thermistor (DIN 44081 Single, DIN 44082 Triplet)
or a thermal contact (NC contact) can be connected to the terminals T1 and T2.
Stop!
The inverter can only evaluate one PTC thermistor!
Do not connect several PTC thermistors in series or parallel.
If several motors are operated on one inverter, use thermal contacts (NC contacts) connected in series.
To achieve full motor protection, an additional temperature monitoring with separate evaluation must
be installed.
This function is only available with i550. It is recommended to always use this function if the motor is
equipped with a PTC thermistors or thermo contact.
3:Fault
(Reference see P310:1)
Motor temperature sensor fault reaction
0: No response
No reaction on the inverter
1: Warning
Warning will be displayed. Inverter will continue operation normally.
2: Trouble
Inverter will go to Trouble state and ramp down the motor with the
Quick Stop Ramp time.
3: Fault
Inverter will go to Fault state and stop the motor with a coast stop.
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