JUMO 709050 IPC IGBT Power Converter IPC 70/100A Operating Manual - Manual (Page 40)

5 Settings
40 [IGBT Power Converter 70/100A] 02.08
5.10 Setting the current limit (max. current adjust)
h The front „max. current adjust“ trimmer can be used to limit the rms value
of the load current over a range of 10 to 100% of the rated converter
current.
1.5 clockwise turns correspond to increasing the response threshold by
approx. 10% of the rated converter current.
Correct
measurement
The red „current limit“ LED is on when current limiting is active.
Factory setting The trimmer is set to the maximum rated current.
5.11 Total and partial load failure monitoring (load fail adjust)
Total and partial load failure monitoring for different types of load.
The factory setting of the converter is such that the total and partial load failure
states can be detected for resistive loads and loads connected in series. For
short-wave infrared radiators, turn switch S106 to position 2.
Factory setting Switch S106 is in position 1
If the load resistance changes during operation, this will be detected by the
partial load monitoring and indicated through the signal output.
The response threshold can be adjusted by the „load fail adjust“ trimmer on
the front panel (load fail adjust) between 20 and 100% of the rated converter
current.
Action Response
Turn the „max. current
adjust“ trimmer clockwise The current limit will increase
Turn the „max. current
adjust“ trimmer counter-
clockwise The current limit will reduce
A
A true-rms meter must be used for measuring voltage, power or
current, because the load current is pulsating DC.
A meter calibrated for alternating current (AC) and sinusoidal
waveforms will produce false readings!
H
The activation of the current limit can also be used to operate the
fault signal relay.
For this purpose, open switch S 101/13.
Factory setting: The activated current limit is only indicated by the red
LED ( S 101/13 closed)
v Chapter 5.2 „Setting switches S101, S103, S104, S105, S106 and
X106“