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Phone: +86 16626708626Description
- Key Technical Specifications
- Manufacturer: ABB (Bailey Controls)
- Part Number: INNPM22
- Product Family: Symphony Plus / Infi 90
- Module Type: Network Processor Module (NPM)
- Network: Infi 90 (terminal bus / fieldbus interface)
- I/O Capacity: Up to 600 I/O points
- Operating Voltage: 220 V
- Dimensions (H × W): 360.68 mm × 279.4 mm
- Battery: Lithium button cell, 5 g
- WEEE Category: 5 (Small electrical/electronic equipment)
- Application: PLC/DCS spare replacement in power and packaging control
- Product Introduction
ABB INNPM22 is a Network Processor Module for the Symphony Plus series and Bailey Infi 90 DCS. It bridges I/O racks to the Infi 90 network and supports controller communication in legacy power and industrial control systems.plcdcspro+1
Buyers choose this module when they need an exact NPM replacement for an existing Infi 90 node. Confirm network baud rate, node address, and firmware before installation, because mismatched settings will block the network segment.
- Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to This Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No power LED | Missing 220 V supply or blown fuse | ✅ High | Measure 220 V at the module terminals and check fuse | Check power and wiring before replacing the module |
| Network LED off or flashing abnormally | Infi 90 network fault, wrong node address, or baud mismatch | ✅ High | Verify node address and baud rate in the DCS config | Confirm network settings and cabling before hardware swap |
| I/O points offline but controller OK | NPM cannot reach I/O buses or terminal board fault | ✅ High | Check terminal bus status and I/O rack power | Isolate terminal bus and I/O racks first |
| Intermittent comms drops | Loose cable, EMI, or backplane fault | ✅ Medium | Inspect Infi 90 cable and terminators, check shielding | Repair network wiring and terminators before replacing NPM |
| Battery low warning | Battery end-of-life | ✅ Low | Check battery indicator or read diagnostic flag | Replace the lithium button cell and clear the alarm |
| Controller cannot poll I/O | Configuration mismatch or firmware version issue | ✅ Medium | Compare NPM firmware and config with the original node | Match firmware version and restore the original config |
If you are stuck, contact technical support with photos of the label, rack slot, and diagnostic logs.
INNPM22
INNPM22
- Frequently Asked Questions (FAQ)
Q: Is INNPM22 a direct replacement for INNPM21?
A: Not automatically. The INNPM21 and INNPM22 have different firmware and compatibility requirements in some Infi 90 nodes. Confirm the exact node type and firmware before ordering.
Q: Can I hot-swap the INNPM22?
A: No. Pulling an NPM while the Infi 90 network is live can disrupt the segment and damage the backplane. Power down the node or follow the OEM maintenance procedure first.
Q: Will my existing I/O configuration stay intact after a swap?
A: The node configuration lives in the controller and node database, not on the NPM itself, but you still need to back it up. Photograph switches/jumpers, record node address and baud rate, and mirror them exactly.
Q: Why is this cheaper than buying from ABB?
A: Because INNPM22 is obsolete in most supply channels. What you see is surplus or refurbished stock, which is why the price is lower.
Q: Do you test these before shipping?
A: A proper seller powers up the NPM, checks the network LED, and verifies that the module can be polled by the controller. Ask for test results and photos before you buy.
Q: What should I verify before ordering?
A: Check the exact part number, node address, baud rate, firmware version, and whether your node uses the terminal bus to I/O racks. That is where most rework and downtime come from.
Q: Is INNPM22 still available new from ABB?
A: In most cases, no. It is treated as a legacy module, so current stock usually comes from surplus or refurbished suppliers.
