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KUHNKE Automation
44
8.2 Channel State
ChannelState_1 … ChannelState_9 (9xWord)
Bit
Signal
Function
0
Chn_ON
Channel enabled
1
Chn_Startup
Warming up (phase-fired)
2
Chn_Err
Channel has at least 1 error
3
Chn_ON
Channel request enabled and remains enabled
even if an error provoked automatic shut-down.
…
…
…
8
Fuse1Err
Fuse defective (triac)
9
Fuse2Err
Fuse defective (phase) *
10
TriacErr
Triac defective *
11
LoadErr
Load failure detected
12
CorrErr
Power correction error
* Fuse2Err will set together with TriacErr only, that is to say, it is impossible to say whether an
error is caused by the blown fuse upstream the triac or by a triac being permanently blocked
Notes on fault detection
Faults can be detected as follows, depending on the actual value of the con-
trol variable:
Control variable 1-99% (detected after max. 0.99s)
All errors
Control variable 0% / radiator master OFF:
Fuse (phase) defective
Triac failure
Load failure
Control variable 100%:
Fuse (phase) defective
Fuse (triac) defective or triac triggered
Combined load failure
and
fuse (triac) defective if the fuse (triac) failure oc-
curs after the load failure.
Priority of error:
If multiple problems occur at the same time, only the error of the highest pri-
ority may be indicated, depending on whether it occurs at the OFF or ON
switching stage:
Triac should be off:
1st Fuse (phase)
2nd Triac failure
3rd Load
Triac should be on:
1st Fuse (phase)
2nd Fuse (triac) or triac or load