How can I prevent unintended motion after a packaging machine restarts following a power outage?
• Fit a power-loss memory safety relay that drops servo enable and requires manual reset.
• Add PLC power-up self-check: allow start only when heat-seal jaw and cross-sealer are at zero position.
• Enable STO on film-feed and pull-off servo drives so axes cannot auto-enable on restart.
• After power-up, run low-speed jog and reset film tension before switching to auto mode.
• Perform a CE restart unintended-motion FAT and log each axis displacement after every outage.
• Add PLC power-up self-check: allow start only when heat-seal jaw and cross-sealer are at zero position.
• Enable STO on film-feed and pull-off servo drives so axes cannot auto-enable on restart.
• After power-up, run low-speed jog and reset film tension before switching to auto mode.
• Perform a CE restart unintended-motion FAT and log each axis displacement after every outage.