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M
AINTENANCE AND ERROR CORRECTION ON THE PROCESS CONTROLLER
Other malfunctions
Problem
POS = 0 (with CMD > 0%) or
POS = 100%,(with CMD < 100%) (CUTOFF) has
PV = 0 (with SP > 0) or
PV = PV
(with SP > SP )
Only with devices with analog
repeat:
red LED does light
Binary output does not switch
Only with devices with process
controller:
Device does not work as a
controller despite correctly
executed settings.
156 - 8630
Possible causes
Tight-closing function
been inadvertently activated
Binary output:
Current > 100 mA
short circuit
Menu item P.CONTRL stands in
main menu. The device thus
works as a process controller
and expects a process value at
the corresponding input.
Remedy
Deactivate tight-closing
function
Check connection of
binary output
Remove the menu item
P.CONTRL from the main
menu.
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