370.x Vacuum not released
Description
The vacuum has not been switched off. Just before the sheet reaches the first for the two pull-in rollers the vacuum must be switched off. The time is controlled with the "Vacuum off" sensor. If this signal is missing within one machine cycle this fault is triggered.
Remedy
- Check the "Vacuum off" sensor and re-adjust if necessary.
- Change the "Vacuum on: Correction angle" by 10° on the GCC drive control page.
- Check the 'Machine cycle' signal. It should show only one pulse per cycle - re-adjust the machine cycle sensor.
- Parameter page: "InfeedPulsDuration" must be minimum 160 ms.
- Check the digital input