Safety instructions
Thermal motor monitoring
2
95
EDK82EV222 DE/EN/FR 13.0
Codes for parameter setting
Code Possible settings IMPORTANT
No. Name Lenze Selection
C0120 I
2
t switch−off 0 0
= inactive
{1 %} 200 Reference: apparent motor
current (C0054)
Reference to active motor current
(C0056) possible, see C0310
C0311
*
Functions for
special
applications 2
1
0 All functions switched off A combination of functions can be
activated by entering the sum of
the selection values.
1, 2, 4,
8, 16
System manual
(from software
version 3.9)
1 128
Motor overload (I
2
xt) tart value
Function active: Function switched−off:
When the device is connected to the
mains, the thermal motor load is
initialised with 50 %.
The function has to be activated for
operation in UL−approved systems.
When the device is connected to
the mains, the thermal motor load
is initialised with 0 % ("cold
engine")
Adjustment
1. Calculate C0120. This value corresponds to a motor utilisation of 100 %:
C0120[%] +
I
r
I
N
@ 100%
I
r
Rated motor current
I
r
Rated controller current at switching frequency 8 kHz
2. If you decrease C0120 on the basis of the value calculated, the monitoring already responds at
a motor utilisation < 100 %.
3. If you increase C0120 on the basis of the value calculated, the monitoring only responds at a
motor utilisation > 100 %.
The controller switches off with error OC6 if the apparent motor current is greater than the rated
motor current for a longer time.