JUMO 709051, Operating Manual, Page: 85 / 92

V1.00/EN/00741192/2021-03-30 [IPC 300] 85
9 What to do, if ...
What is happening? Cause / remedy Info
Power controller is not
producing any output
power
even though the green
Power LED
is lit and a setpoint value
has been set. - Parameters have been changed in the
configuration level but not completed.
h
Leave the configuration level by pressing
EXIT and wait for a restart.
-
- Wire break at the analog input or incor-
rect analog input wiring
v
Chapter 3.4
"Switch-on se-
quence"
- Setpoint value configuration incorrectly
configured, e.g. set via interface.
v
Chapter 5.1.4
"Setpoint configu-
ration"
- Input for firing pulse inhibit active
A padlock symbol is shown as the operating
mode in the info line.
v
Chapter 4.1.2 "Ap-
pearance of mea-
sured values"
- Load failure
h
Check load and load connections
v
Chapter 8 "Error
messages and
alarms"
Fuse LED is lit - Semiconductor fuse defective due to
short circuit in power section
h
Remedy short circuit in the load or load
circuit
h
Fit a new semiconductor fuse
v
Chapter 3.4.3 "Re-
placing the two
semiconductor
fuses"
Power controller is pro-
ducing power even
though no setpoint value
(output level) is specified
by the controller. - Configuration problem:
Controller output signal set to 4 to 20 mA
and current set to 0 to 20 mA at analog
input of power controller.
h
Check configuration and select same
standard signals for the controller and
power controller.
v
Chapter 5.1.3 "An-
alog inputs"
v
Chapter 5.1.4
"Setpoint configu-
ration"
- Power controller in manual mode
h
Exit manual mode by pressing EXIT
v
Chapter 6.3 "Man-
ual mode"
- Base load settings selected
h
Check settings for base load settings
v
See "" on page 54.
- IGBT short-circuit
v
Chapter 8 "Error
messages and
alarms"