An assembly plant isolates a robot cell dozens of times a shift, for jams, tip changes and quality holds, against a takt time that treats every minute as lost output. The procedure that gets followed is the fast one.
Cells have four or five energy sources and a safety PLC that must stay live for the light curtain and the door interlock. The mistake is isolating the safety system along with the drives.
Team leaders execute most lockouts, not maintenance — which means training records on the line matter more than in most industries.
Everything is off, including the interlock that would have stopped the robot when the door opened after restart.
Electrical only; the servo brake holds, the gas is live, the water is pressurised.
Authorised in practice, not on paper. The first inspector question.
Real isolation-point structure, illustrative tags, equipment that does not exist. Free to read and download. An example to learn from — not a document to adopt.
Full energy isolation of RC-14 for weld gun tip change and reamer service. Entry into the cell.
- 11 isolation points
- 1 must stay energised
The safety circuit is on the procedure as a point that must stay live, and it cannot be locked by mistake.
A phone scan at the tag is the fastest attestation that is still an attestation.
Every team leader who holds the authorized-employee role appears — including the ones never trained.
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