Setyr worked example — RC-14 Robot Weld Cell - Weld Tip Change Isolation Not approved for use. Version 1 · 2026-09-04
Worked example only — your site must author, review and approve its own
procedure under 29 CFR 1910.147(c)(4). setyr.com/procedures
RC-14 Robot Weld Cell - Weld Tip Change Isolation
Automotive manufacturing
Full energy isolation of RC-14 for weld gun tip change and reamer service. Entry into the cell.
This is a worked example, not a procedure you can adopt. It describes equipment that does not exist, with illustrative tag numbers.
29 CFR 1910.147(c)(4) requires the employer to develop, document and
utilise energy control procedures specific to their own machines, and (c)(6)
requires the employer to inspect those procedures periodically. Neither duty
can be delegated to a vendor or discharged by this document.
Isolation points
| # | Tag (illustrative) | Type | Disposition | What it does and why | Dwell |
|---|---|---|---|---|---|
| 10 | RC-14-MAIN-DISC | Disconnect | Isolate & lock | Cell main 480V disconnect at the control panel. De-energises robot controller, weld supply and positioner. | — |
| 20 | RC-14-WELD-PWR | Disconnect | Isolate & lock | Spot weld power supply disconnect, 230V. Separate from the cell main. | — |
| 30 | RC-14-POSITIONER | Disconnect | Isolate & lock | 2-axis positioner drive disconnect. Positioner can rotate under load if energised. | — |
| 40 | RC-14-SERVO-BUS | Bleed | Isolate & lock | Servo drive DC bus discharge point. STORED ELECTRICAL - capacitors hold charge; allow discharge dwell before access. | — |
| 50 | RC-14-CDA-SUP | Valve | Isolate & lock | Compressed dry air supply to the cell at the FRL. 90 psi to grippers, clamps and tool changer. | — |
| 60 | RC-14-CDA-BLEED | Bleed | Isolate & lock | CDA bleed downstream of the FRL. Relieves cell header. Confirm zero on the gauge. | — |
| 70 | RC-14-GRIPPER-BLEED | Bleed | Isolate & lock | End-effector gripper actuator bleed. TRAPPED AIR remains at the actuator after header isolation. | — |
| 80 | RC-14-WELD-H2O | Valve | Isolate & lock | Weld gun cooling water supply valve. Isolate after the gun has cooled. | — |
| 90 | RC-14-ARM-SUPPORT | Block | Apply & verify | J2/J3 axis mechanical support stand. GRAVITY LOAD - arm drops when brakes release. Fit before any brake work. | — |
| 100 | RC-14-FUME-EXT | Valve | KEEP ENERGISED | Weld fume extraction. Must REMAIN RUNNING while anyone is in the cell. Do not isolate. | — |
| 110 | RC-14-GATE-INTLK | Switch | Not an isolation device | Interlocked access gate. NOT an energy isolating device - control circuitry only. Must not be relied on. | — |
What your site must supply
- Your own asset and isolation-point tag numbers. The tags shown are illustrative and refer to equipment that does not exist.
- The actual location of every disconnect, valve and vent on your equipment.
- Measured stored-energy magnitudes and the dwell time required to dissipate them.
- Your verification method for each point, and who is authorised to perform it.
- Any additional energy sources present on your equipment and absent here.
Authorship and validation
This example was authored by Setyr for domain validation. It is not derived from any customer's controlled documents. It illustrates the elements 29 CFR 1910.147(c)(4)(ii) requires a procedure to contain — it does not certify compliance, which is a property of an employer's programme rather than of any document.