Lenze i55AE155F

8.7.2 Motor temperature monitoring
In order to record and monitor the motor temperature, a PTC thermistor (single sensor
according to DIN 44081 or triple sensor according to DIN 44082) or thermal contact (normally-
closed contact) can be connected to the terminals T1 and T2. This measure helps to prevent
the motor from being destroyed by overheang.
Precondions
•
The inverter can only evaluate one PTC thermistor! Do not connect several PTC thermistors
in series or parallel.
•
If several motors are actuated on one inverter, thermal contacts (NC contacts) connected
in series are to be used.
•
To achieve full motor protecon, an addional temperature monitoring funcon with a
separate evaluaon must be installed.
•
By default, a wire jumper is installed between terminals X109/T1 and X109/T2, which must
be removed when the PTC thermistor or thermal contact is connected.
Details
If 1.6 kΩ < R < 4 kΩ at terminals X109/T1 and X109/T2, the monitoring funcon will be acva-
ted; see funconal test below.
•
If the monitoring funcon is acvated, the response set in 0x2D49:002 (P309.02) will be
eected.
•
The seng 0x2D49:002 (P309.02) = 0 deacvates the monitoring funcon.
If a suitable motor temperature sensor is connected to the terminals X109/T1
and X109/T2 and the response in 0x2D49:002 (P309.02) is set to "Fault [3]", the
response of the motor overload monitoring may be set other than "Fault [3]" in
0x2D4B:003 (P308.03).
4Motor overload monitoring (i²*t) ^ 215
Funconal test
Connect a xed resistor to the PTC input:
•
R > 4 kΩ : the monitoring funcon must be acvated.
•
R < 1 kΩ : the monitoring funcon must not be acvated.
Parameter Name / value range / [default seng] Info
0x2D49:002
(P309.02)
Motor temperature monitoring: Response
(Mot.temp.monit.: Response)
•
For further possible sengs, see parameter
0x2D45:001 (P310.01). ^ 223
Selecon of the response to the triggering of the motor temperature
monitoring.
Associated error code:
•
17168 | 0x4310 - Motor overtemperature error
3 Fault
Motor control
Motor protecon
Motor temperature monitoring
219