What causes fault code SAF-007 (Trapped Key Interlock Sequence Error)?

Operator tried to bypass correct key exchange sequence. Key stuck in lock — mechanism jammed. Lock mechanism worn — key extracts without full actuation. Extra key in circulation — duplicate compromises interlock sequence. New personnel unfamiliar with key exchange procedure

How do I fix fault code SAF-007?

Follow correct key exchange sequence per lockout procedure sign. If key stuck, do NOT force — lubricate lock mechanism. Inspect lock mechanism — replace if key extracts without full travel. Audit key inventory — eliminate any duplicate keys. Retrain personnel on trapped key interlock procedure. Label all locks and keys clearly with sequence numbers

Trapped Key Interlock Sequence Error

SAF-007

Trapped key interlock sequence violation. Keys not exchanged in the correct order for safe access to hazardous area.

critical general

safety trapped key interlock lockout sequence

Probable Causes (ranked)

Operator tried to bypass correct key exchange sequence
Key stuck in lock — mechanism jammed
Lock mechanism worn — key extracts without full actuation
Extra key in circulation — duplicate compromises interlock sequence
New personnel unfamiliar with key exchange procedure

Fix Steps

1 Follow correct key exchange sequence per lockout procedure sign
2 If key stuck, do NOT force — lubricate lock mechanism
3 Inspect lock mechanism — replace if key extracts without full travel
4 Audit key inventory — eliminate any duplicate keys
5 Retrain personnel on trapped key interlock procedure
6 Label all locks and keys clearly with sequence numbers

Field Trick

If someone 'lost' a trapped key, you have a SERIOUS problem. That key could be in someone's pocket, bypassing the interlock. Replace the entire key set.

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