vc999 K7 - Page 77

Vacuum Packaging Machine VC999 K7
Error display and troubleshooting
2008-11-26 Art.-No. 592.016 Page 77/121
Fig. 10/3
Fault ranges for the temperature controller error codes
Fault ranges Explanations Possible causes
Interruption of the load circuit after the U
R
tap
- Cable break, heating conductor break
- Contact to the sealing bar defective
Interruption of the signal from the current
transformer PEX-W2
- I
R
measuring line from the current
transformer interrupted
Interruption of the primary circuit - Line break, triac defective in the con-
troller
- Primary winding of the pulse trans-
former interrupted
Interruption of the secondary circuit in
front of the U
R
tap
- Cable break
- Secondary winding of the pulse trans-
former interrupted
U
R
signal missing - Measuring line interrupted
Partial short circuit (Delta R) - The sealing bar is partially bridged by
a conducting part (opposite bar, etc.)
Interruption of the parallel circuit - Cable break, heating conductor break
- Contact to the heating conductor de-
fective
Total short circuit - Sealing bars have been assembled
incorrectly, insulation missing at the
sealing bars or assembled incorrectly
- Conducting part totally bridging the
sealing bars
U
R
signal incorrect - U
R
outside the permitted range of
0.4..120VAC.
I
R
signal incorrect - I
R
outside the permitted range of
30...500A.
Windings through the current transformer
PEX-W2 incorrect
- Check the number of turns
(Two or more turns are required for
currents < 30A)
Internal device fault - Hardware fault (replace the controller)