JUMO 709050 IPC IGBT Power Converter IPC 70/100A Operating Manual - Manual (Page 38)

5 Settings
38 [IGBT Power Converter 70/100A] 02.08
The adjustment range of the resistance limiting can be set by the R-control
trimmer between R
Nom
and 10xR
Nom
.
R
Nom
= nominal voltage / nominal current
Factory setting S101-10 is open, R-control is inactive
5.8.2 SIC voltage reserve (SIC reserve)
When SIC heating elements are used, ageing of the elements is automatically
compensated for when P-control is chosen for the subordinate control loop
(Chapter 5.3).
The resistance of the SIC heating element increases with the operational time.
The IPC converter adjusts the load voltage automatically to match the required
power output. As soon as the maximum load voltage from the IPC is no longer
sufficient to produce the required output power for the SIC heating element,
this condition will be signaled by the „SIC reserve“ LED. This indication
appears time delayed after approx. 7 minutes.
The fault signal relay drops out at the same time.
The SIC reserve display as well as the fault signal function can be activated by
opening the S101-12.
Factory setting S101-12 is closed, and the function is inactive.
5.8.3 Control input adjustment (max. Power adjust)
The „max. Power adjust“ trimmer at the front can be used to adapt the power
output of the converter to the maximum output signal of the controller
connected before.
Factory setting The trimmer is adjusted so that a 100% controller output signal produces the
maximum load voltage (U
2
control is the factory setting for the subordinate
control loop).
Action Response
Turn „resistance control“
trimmer clockwise Limiting at a higher resistance value
(higher temperature)
Turn „resistance control“
trimmer counter-clockwise Limiting at a lower resistance value
(lower temperature)
Action Response
Turn the „max. Power adjust“ trimmer
clockwise more power
Turn the „max. Power adjust“ trimmer
counter-clockwise less power