Error 240.12 Sensor defective
Description
Monitor with can-body sensor
Unicontrol node Energy A012, Heat A013 digital input 5
The can-body sensor (A012 input 5, A013 input 5) still does not detect any can bodies although based on the energy values the first can body has been welded.
The can-body sensor detects the first can body too soon. After “Feeder ON” and “Welding current ON”, two full machine cycles must be completed before the first can body may be detected at the can-body sensor.
Remedy
- Set the sensor so that it is only active at can-body run.
- Remove can body from welding plane before feeder is switched on.
- Check the sensor for correct polarity (high ==> can body detected.
- Check the sequence of the signals feeder, welding current, machine cycle, and can-body sensor.
- Check the digital input.