Lenze E82xVxxxKxxxxx - Manual (Page 359)

Function library
Thermal motor monitoring
Temperature monitoring of the motor with PTC and earth−fault detection
10
l
359 EDS82EV903 EN 3.0
10.13.2 Temperature monitoring of the motor with PTC and earth−fault detection
Description
You can connect PTC resistors via the inputs X2/T1 and X2/T2 according to DIN 44081 and
DIN 44082. The motor temperature is detected and integrated into the drive monitoring.
It is also possible to connect a thermostat (NC contact) to X2/T1 and X2/T2. Lenze AC
three−phase motors are equipped with these components as standard.
We recommend to always activate the PTC input for operation with motors equipped with
PTC resistors or thermostats. By this you prevent the motor from overheating.
(
Stop!
ƒ The controller can only detect one PTC resistor! Do not connect several PTC
resistors in series or in parallel:
– The motor temperature would be measured incorrectly.
– The motors could be destroyed by overheating.
ƒ If you connect several motors to one controller, use thermostats (NC
contacts) connected in parallel to monitor the motor temperature.
ƒ To achieve a total motor protection you must install an additional
temperature monitoring with a separate evaluation.
Codes for parameter setting
Code Possible settings IMPORTANT
No. Name Lenze Selection
C0119
v
Configuration
of motor
temperature
monitoring
(PTC input) /
earth fault
detection 0 0 PTC input inactive Earth fault
detection active l Configure signal output in
C0415
l If several parameter sets are
used, monitoring has to be set
separately for every parameter
set.
l Deactivate earth fault
detection if the earth fault
detection is actuated
unintentionally.
l If the earth fault detection is
activated, the motor starts
with a delay of approx. 40 ms
after controller enable has
been set.
^ 359
1 PTC input active,
TRIP effected
2 PTC input active,
warning effected
3 PTC input inactive Earth fault
detection inactive
4 PTC input active,
TRIP effected
5 PTC input active,
warning effected