The FANUC A05B-2255-C100#ESW is a dedicated teach pendant developed for spot welding robot applications where stable, repeatable operator control is essential for production efficiency and safe commissioning. As the primary handheld human–machine interface (HMI) for many FANUC welding cells, this pendant is used to jog the robot, teach positions, validate motion paths, and support troubleshooting directly at the machine. The #ESW suffix is commonly associated in the market with a spot welding iPendant variant, helping buyers and maintenance teams distinguish it from other pendants that may look similar but are intended for different process environments.
A major practical feature often associated with this model is the non-touch interface. In many industrial settings—especially welding shops—operators may wear gloves, deal with dust and residue, or perform frequent clean-downs. A push-button style pendant can provide consistent input behavior under those conditions and reduce the chance of unintended commands that can happen with touch interaction. In other words, the design choice is about predictable operation and shop-floor practicality rather than “old vs new.”
Typical Application Scenarios
Spot welding workcells tend to run high cycle counts with frequent interventions for tooling, tip dressing, fixture checks, and maintenance. In those environments, the pendant supports a range of daily tasks, including:
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Teaching and refining weld points and approach/retract positions
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Manual jogging for setup, verification, and recovery
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Step-by-step program checks during commissioning and process tuning
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Fault recovery operations after interlocks, clamp faults, or cell stops
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Operator support and diagnostics for maintenance teams working on the line
This makes the A05B-2255-C100#ESW relevant not only during installation, but throughout the lifecycle of the robot cell as part of routine production support.
Specification Overview (Table)
| Item | Details |
|---|---|
| Manufacturer / Brand | FANUC |
| Part Number | A05B-2255-C100#ESW |
| Common Market Description | Spot Welding iPendant (Without Touch) |
| Interface Type | Push-button (non-touch) |
| Safety Controls (commonly listed) | Emergency Stop, grip/enable switch |
| Product Family | A05B-2255 series |
| Typical Use | Teaching, jogging, diagnostics for spot welding robot cells |
| Supply Options (market) | New, surplus, refurbished, repair/exchange depending on vendor |
Note: Exact compatibility can depend on controller generation and configuration. When sourcing replacements, confirm the exact part number and suffix.
Key Benefits in Welding Environments
1) Non-touch control for consistent operation
In spot welding areas, a pendant is handled constantly. Gloves, residue, and repeated wiping are common. A non-touch pendant can be beneficial because it offers:
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Reliable button feedback even with gloves
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Reduced input ambiguity compared with touch presses
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Less sensitivity to surface contamination that may affect touch accuracy
This is especially useful when operators need quick, repeatable commands during recovery or setup.
2) Supports safe teaching and maintenance workflows
Teach pendants are designed for controlled movement during teach mode. Listings and common industry expectations for this category typically include safety elements such as an Emergency Stop and a grip/enable switch. These features are central to safe operation during jogging and point teaching, helping ensure motion occurs only under deliberate operator control.
3) Improves uptime through faster recovery
When a spot welding cell stops, time is lost until the system is safely restored. A compatible pendant allows technicians to:
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Enter controlled modes for jogging and verification
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Move the robot safely away from fixtures or clamps
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Re-check taught points after mechanical adjustments
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Validate sequences after tool service
Reducing recovery time is a direct contributor to production throughput.
Purchasing and Replacement Considerations
Confirm the full code, including suffix
With FANUC pendant families, base numbers can appear in multiple variants. The suffix (such as #ESW) matters. A pendant may be physically similar to another model but differ in intended application mapping, configuration, or supported workflow expectations. For procurement teams, the safest approach is to match the exact part number and confirm with the controller documentation or a trusted supplier cross-reference.
Check condition expectations for used/refurbished units
In many markets, this part is available through multiple channels. If purchasing surplus or refurbished, it is smart to verify:
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Keypad responsiveness and display condition
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Integrity of safety controls (E-Stop and enable switch function)
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Cable/connector condition and strain relief
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Seller warranty terms and test report availability
For production-critical lines, documented testing and a clear return policy can matter as much as price.
Installation and handling
Teach pendants are frequently plugged/unplugged and handled by different operators. Good practices include:
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Avoiding sharp cable bends and repeated torsion near connectors
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Securing the pendant when not in use to reduce accidental drops
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Keeping protective covers or storage hooks in the cell where appropriate
These small habits can extend service life and reduce unexpected failures.
Summary
The FANUC A05B-2255-C100#ESW teach pendant is a practical, process-oriented operator interface for spot welding robot systems. With a commonly referenced non-touch push-button interface and typical safety control expectations for teach pendants, it supports the full workflow of teaching, jogging, commissioning, troubleshooting, and line recovery. For facilities running welding cells where reliability and consistent input matter, matching the exact #ESW variant helps ensure correct fit for the application and reduces downtime risk during replacement.
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