Saia-Burgess Controls AG
Manual I/O-modules for PCD1 │ PCD2 series │ Document 27-600 – Release ENG09 │ 2019-05-01
8-11
PCD2.W380 & PCD3.W380
PCD2/3.W380,8analogcongurableinputs
8
8.1.9 Protection mode
Theinputstageconguration(switch)isautomaticallymodiedwhenthemodule
enters in protection mode. The input values of the others channels could be out of
thespeciedtoleranceswhenachannelisinprotectionmode.
Themodulesfromversion‘A2’haveanautomaticrecongurationmechanism
after the active protection has become active. Once triggered, the input will remain
for 10 seconds in protection mode. After 10 seconds, the input will switch back to
normaloperatingconguration.Iftheinputisstillinoverloadcondition,protection
willagainbeactivated.Thisfeatureisavailableonlywithrmwareversiongreater
than 1.24.10.
For Modules with version ‘A’ or ‘A1’ the protection will also be activated when an
overload occurs, but to switch back to normal operation mode the PCD has to be
restarted.
8.1.10 LED signalization
One red LED is placed near the channel 0. The LED is enabled when an error oc-
curs on the module. This is a general indication and the details of the error must
bereadinthespecicregisterofthemodule.
The signaled errors are:
■Congurationerror: Thedesiredinputscongurationisnotappliedcor-
rectly.
■ADC-Fehler: A/D converter doesn’t respond.
â– Calibration error: Module not calibrated.
â– Protection mode: An input channel has been automatically put in pro-
tection mode, because the module detects a situation
which can cause important damages to hardware.
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