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13.3 LC display of PQ modules
An overview of the possible display contents is provided in
chapter "11.4 LC display of electronic base modules".
message
possible cause
No message,
No or insufficient
LC display off
load voltage
Voltage interruption
during firmware
update
evs active
Load voltage
supply at EVS con-
nection interrupted
(only modules with
EVS connection)
Module-internal
fuse has tripped
(can only occur
in the event of
extreme faults)
or other module
defect
36
corrective action
Check the electrical
connection
Ensure correct load
voltage
Execute firmware update
again
Check wiring of EVS
connection
Replace electronics
module (please contact
the Bürkert Service)
english
Type 8647
Troubleshooting
message
possible cause
feedback
Error at lower or
err down x
upper feedback
or
indicator to
feedback
channel x
err up x
Input units do not
deliver QI values
Warning limit
pilot scc
limit ch. x
switching cycle
or
counter pilot
act. scc
valve or actuator
limit ch. x
exceeded
Short circuit on
short circuit
ch. x
output channel x
(valve or plug-in
connection faulty)
corrective action
Eliminate error at feedback
indicator
Use input units with QI
support (or set QI for the
respective channel to 1
if the sensor does not
deliver QI but QI is to be
used as other sensors
deliver the QI)
or
Configure PQ module
without QI
Replace pilot valve or
maintain actuator and reset
switching cycle counter
or
Deactivate switching cycle
counter
or
Increase warning limit
switching cycle counter
Check plug-in connection
or
Replace valve
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