JUMO 709050 IPC IGBT Power Converter IPC 70A Operating Manual - Manual (Page 33)

02.08 [IGBT Power Converter 70A] 33
5 Settings
5.9 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 such that maximum load voltage is produced at
nominal voltage and a 100 % controller output signal.
(U
2
control is the factory setting for the subordinate control loop).
5.9.1 Setting for maximum power (max. Power adjust)
h Apply the maximum controller output signal
h Turn the „max. Power adjust“ trimmer clockwise or counter-clockwise until
the required power is achieved.
h Turning the „max. Power adjust“ trimmer clockwise will increase the
maximum power output.
h Take care that the red „current limit“ LED remains off, otherwise the circuit
is operating in current limiting (max. current adjust), which leaves turning
the trimmer clockwise without effect (power output will not increase).
5.9.2 Input signal attenuation
h Turning the „max. Power adjust“ trimmer counter-clockwise will decrease
the maximum power output of the converter.
5.10 Setting the base load (min. Power adjust)
Base load
setting Open switch S11 to be able to set a base load.
Turning the „min. Power adjust“ trimmer clockwise will increase the base load
setting.
The settable range covers the complete range from 0 to 100%.
Example: A heating system is operated with a base load set to 1/3. The remaining 2/3 of
the power are regulated by the controller.
Action Response
Turn the „max. Power adjust“ trimmer
clockwise more power
Turn the „max. Power adjust“ trimmer
counter-clockwise less power