Glossary · System coordination, integration and orchestration
Coordinated restart
Also known as: line restart, coordinated start-up
German: Koordinierter Wiederanlauf
In production line control, a coordinated restart is the controlled resumption of operation of several interconnected machines after a stop, in a defined order and only after each machine has confirmed a consistent, ready state.
- System integration
In one sentence
A coordinated restart resumes operation of connected machines in a defined order once each has confirmed a consistent, ready state.
Example
After a line stop, the line controller first starts the downstream packer, then the labeler and finally the filler, so that containers never run into a stopped machine.
How it applies
- Engineering: Restart usually runs downstream-first so that machines can absorb what upstream machines send. Each machine must check its own state, for example product position, open doors or reset safety functions, before it reports ready.
- Safety: A coordinated restart is an operational function. Restarting after a safety-related stop requires the reset and Restart prevention measures of each machine; automatic line restart must not override them.
- Documentation: Manuals should describe the restart sequence, the conditions each machine checks and what the operator must do after an intervention, such as clearing partial products, before restarting.
Coordinated restart vs. reset
A reset, for example a Manual reset of a safety function, re-enables a machine after a stop. The coordinated restart then starts production across machines. Reset alone must never start motion.