JUMO 709050 IPC IGBT Power Converter IPC 70/100A Operating Manual - Manual (Page 49)

02.08 [IGBT Power Converter 70/100A] 49
7 Troubleshooting
What is happening? Cause / Remedy Information
Green power LED does
not light up - Voltage supply to control section not
connected
v Chapter 4 „Electrical
connection“
IPC is not producing any
output power although
green LED
Power is lit and a
setpoint value has been
provided. - Voltage supply to power section not
connected
v Chapter 4.1 „Screw
connections in the
power section“
- Analog control input not connected
correctly
v Chapter 4.1.5
„Wiring of the screw
terminals“
- Switch positions for control input S 101/8
and 9 or S104 set incorrectly
v Chapter 5.5 „Control
inputs“
h Check switch for firing pulse inhibit
S 105
v Chapter 5.6 „Firing
pulse inhibit“
- Load break
- Load short circuit („current-limit“ LED is
lit)
h Check load and load connections
IPC is not producing any
output power although
green power LED is lit, a
setpoint value is set and
the load fail LED is lit. - Load break
- Load short circuit („current-limit“ LED is
lit at the same time)
h Check load and load connections
- Safety cut-out in the power section
v Chapter 5.12
„Safety cut-out in
the power section“
fuse LED is lit - Semiconductor fuse blown by
earth short in the power section/
h remedy wiring fault or earth short in the
load
v Chapter 4.1.4
„Replacing the two
semiconductor
fuses“
IPC is not producing any
output power although
green power LED is lit, a
setpoint value is set and
the overheat LED is lit. - Switch off caused by overheating
(clogged or faulty fan)
h Check the fan and replace, if necessary
- Insufficient supply of fresh air
- Inlet air temperature > 35°C
h Ensure sufficient ventilation
v Chapter 3.3
„Ambient
conditions“