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3. Key Technical Specifications
- Model: CP-9200SH/CPU
- Product Codes (typical): 87921-31000-S030A (1 MB), 87921-31100-S030A (2 MB)
- Program Capacity: 1 MB unit ≈ 12 k steps; 2 MB unit ≈ 30 k steps
- Memory: Battery-backed main memory + flash memory for program retention
- Execution Levels: High-speed scan 0.4–300 ms; low-speed scan 1–300 ms
- Multi-CPU Support: Up to 2 CPU modules per system (independent program execution + synchronization)
- Instructions: 132 types (relay, numerical, etc.)
- Mounting: MB-01 or MB-03 mounting base (slots 0/1 primary; 2/3 for second CPU)
- Operating Temperature: 0 °C to 55 °C
- Humidity: 5 % to 95 % (non-condensing)
- Battery: Lithium (typically BA000024 / ER6VC type) for memory backup
- System Role: Core processor of the modular CP-9200SH integrated machine controller
Note: Exact current draw and detailed register maps depend on the full system configuration (power module, I/O, motion modules). Always cross-check the official Yaskawa CP-9200SH User’s Manual (SIE-C879-40.1) and Programming Manual (SIE-C879-40.3).
4. Product Introduction
The Yaskawa CP-9200SH/CPU is the central processing module of the CP-9200SH Machine Controller. It executes both ladder/sequence logic and high-speed motion control programs in a single modular platform designed for synchronized multi-axis machinery.
Engineers use this CPU when maintaining or expanding existing CP-9200SH systems that require electronic cam, electronic shaft, or tightly coordinated motion. It supports single-CPU or dual-CPU configurations and stores user programs in battery-backed plus flash memory so data survives power loss. As a legacy product, available units are typically New Surplus stock with full functional verification.
CP-9200SH/CPU
CP-9200SH/CPU
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No RUN or READY LED | Power module failure or missing battery | ❌ Medium | Measure voltage at power module output; check battery voltage and connection | Verify PS-01/PS-02/PS-03 power module first |
| Program lost after power cycle | Dead lithium battery or failed backup circuit | ✅ High | Check battery voltage; attempt program reload from flash | Replace battery (BA000024 type) and re-save program to flash |
| Dual-CPU synchronization failure | Address conflict or mismatched firmware/style | ✅ High | Confirm CPU slot assignment and setting switches; compare program versions | Match settings exactly and reload identical programs |
| High-speed scan overruns | Excessive program load or interrupt conflict | ✅ High | Monitor scan time via CP-717 engineering tool | Optimize high-speed task or move non-critical logic to low-speed scan |
| Communication loss with SVA/PO-01 modules | Backplane contact or module numbering error | ❌ Medium | Reseat modules; verify module numbers in system configuration | Check mounting base and module seating before replacing CPU |
If diagnostics remain unclear, capture LED status photos, error codes from the system registers, and CP-717 screenshots before contacting support.
6. Frequently Asked Questions (FAQ)
Q: What is the difference between the 1 MB and 2 MB CP-9200SH CPU versions?
A: The 1 MB version (approx. 12 k steps, product code 87921-31000-S030A) suits smaller machines. The 2 MB version (approx. 30 k steps, 87921-31100-S030A) provides more program capacity for complex multi-axis or dual-CPU applications. Confirm which capacity your existing system uses before ordering.
Q: Can I run two CP-9200SH CPU modules in the same rack?
A: Yes. The system supports up to two CPU modules. Each can execute its own program independently while sharing data through common registers and synchronization functions. Proper slot assignment and setting-switch configuration are required.
Q: Is the battery required for normal operation?
A: The lithium battery backs up the main memory so user programs and data survive power loss. Flash memory also stores the program. A dead battery will not stop the CPU from running, but you will lose retained data on power cycle until the battery is replaced and the program is re-saved to flash.
Q: Is this module still supported by Yaskawa?
A: The CP-9200SH series is a legacy product (manuals date to approximately 2000). Official new production has ended. Units currently offered are New Surplus or carefully tested stock. Compatibility with modern engineering tools is limited to the original CP-717 environment.
Q: Can I hot-swap the CPU module?
A: No. Power down the system, discharge residual voltage, and follow proper ESD procedures before removing or installing the CPU. Incorrect handling risks damage to the backplane or loss of retained data.
Q: Why is the price lower than a modern Yaskawa MP-series controller?
A: This is a discontinued product sold as New Surplus or tested stock. It is not a current production item. Pricing reflects residual inventory rather than new manufacturing cost. All units undergo visual inspection, power-on test, and basic functional verification before shipment.
Q: What engineering software do I need?
A: Original CP-717 programming and configuration software is required. Modern MotionWorks or MPE720 packages do not fully support the CP-9200SH series. Confirm you have access to the correct legacy tools before purchasing.
