JUMO 709050 IPC IGBT Power Converter IPC 70/100A Operating Manual - Manual (Page 11)

02.08 [IGBT Power Converter 70/100A] 11
2 Introduction
2.5 Interpretation of the LEDs
overheat
This LED lights up if the maximum permitted temperature is
exceeded. The fault signal relay drops out at the same time.
The load output remains disconnected until the temperature has
fallen below the limit value again.
v Chapter 3.3 „Ambient conditions“
current limit
This LED lights up if the converter is working at the current limit.
v Chapter 5.10 „Setting the current limit (max. current
adjust)“
load fail
This LED lights up if a total or partial load failure has been
detected.
The fault signal relay drops out at the same time.
v Chapter 5.11 „Total and partial load failure
monitoring (load fail adjust)“
fuse
Two semiconductor fuses are integrated in the IPC, to protect it in the event of an earth short. If an earth
short occurs, one or both of the semiconductor fuses will trip. Tripping of one or both of the fuses is
indicated by the "Fuse" LED and the drop-out of the fault signal relay.
v Chapter 4.1.4 „Replacing the two semiconductor fuses“
IGBT
This LED lights up when the electronic safety cut-out of the load circuit
has tripped.
(e.g. because of a wiring fault).
The safety cut-out remains activated until the IPC has been completely
(all-pole) disconnected from the supply and then switched on again.
The fault signal relay drops out at the same time.
v Chapter 5.12 „Safety cut-out in the power section“
R-control
This LED lights up if the converter is working at the
resistance limit.
v Chapter 5.8.1 „Resistance limiting (R-
control)“
SIC reserve
This LED lights up when the IPC has reached its
max. load voltage, so there is no longer
automatic compensation for ageing at SIC load.
The fault signal relay drops out at the same time.
v Chapter 5.8.2 „SIC voltage reserve (SIC
reserve)“
Power
This LED indicates that the control section is
connected to the voltage supply.
It does not indicate the status of the power
section!