Different causes to welding dropouts or missing welding current
Causes:
- Wrong weld power limiter settings.
- Tooling sensor B6 (sensor inside calibration crown) not adjusted well. Distance to can body too big.
- Adapter cable between tooling sensor B6 and cable to control damaged / wire break.
- Cable between adapter cable and control unit damaged / wire break.
- Clamp nr.3 or clamp nr.5 on pacemaker electronic board not well fastened.
- Welding pressure adjusted too low and pressure switch S31 switched off current.
- Upgrade over voltage protection for welding pressure switch not installed (Varistor on supply of S31). Voltage peak on 24Vdc can create short dropouts of S31.
- Welding pressure switch S31 damaged.
- Contact on welding pressure relay K19 damaged / in poor condition.
- Contact on welding current on contactor K13 damaged / in poor condition.