Adjusting the motor
Motor temperature monitoring with KTY
6.6
6.6.4

6.6−10
EDSVF9383V EN 7.1−04/2012
6.6.4 Motor temperature monitoring with KTY
Via the incremental encoder connection X8 a KTY resistor can be connected
to pin X8/5 and X8/8. The motor temperature is detected and integrated in
the drive monitoring.
The KTY resistor is monitored with regard to interruption and short circuit.
We recommend to always activate the KTY input when using motors which
are equipped with KTY resistors. This serves to prevent the motor from being
destroyed by overheating.
 Stop!
Æ’ The controller can only evaluate one KTY resistor! Do not
connect several KTY resistors in series or parallel:
– The motor temperature would be measured incorrectly.
– The motors could be destroyed by overheating.
Æ’ If several motors are operated on one controller, use thermal
contacts (NC contacts) connected in series for motor
temperature monitoring.
Æ’ To achieve full motor protection, an additional temperature
monitoring with separate evaluation must be installed.
Codes for parameter setting
Code Possible settings IMPORTANT
No. Name Lenze Selection
C0121 OH7 limit 150 45 {1 °C} 150 Setting of the operating
temperature for monitoring OH7
l Only for KTY at X8
l Monitoring OH7 is configured
in C0584

6.6−10
See System
Manual
(extension)
C0583 MONIT OH3 3
0 TRIP
Configuration of motor
temperature monitoring with
fixed operating temperature
l Only for KTY at X8
l The operating temperature is
fixed at 150 °C

6.6−10
See System
Manual
(extension)
2 Warning
3 Off
C0584 MONIT OH7 3
2 Warning
Configuration of monitoring
motor temperature with variable
operating temperature
l Only for KTY at X8
l When reaching the
temperature set in C0121 the
warning OH7 is activated

6.6−10
See System
Manual
(extension)
3 Off
Description
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