ABB 2N2113-05 | ACS800 I/O Board – RMIO Interface

Description

Product Introduction

The drive won’t start. The keypad says “External Fault.” You check the I/O board. The input that should be high is low. You swap the 2N2113-05. The drive runs.

That’s the ABB 2N2113-05—the I/O extension board for the ACS800 drive. It plugs into the RMIO control board and gives you extra I/O: more digital inputs for interlocks, more analog inputs for feedback, more outputs for status. When it fails, the drive loses its interface to the outside world.

I’ve swapped these in compressor stations, conveyor lines, and pump houses. The board is simple. The failure mode is usually input channel death—lightning hit, miswired 120 VAC, or a shorted sensor. The fix is swapping the board. Ten minutes, if the spare is on the shelf.

Key Technical Specifications

Quality Inspection Process (SOP Transparency)

I/O boards fail in two ways: input dead or output stuck. We test for both.

1. Incoming Verification
   This batch came from an ABB authorized distributor’s final ACS800 stock. Sealed anti‑static bags. Serial numbers traceable to 2012–2015 production.
2. Visual Inspection
   First: the edge connector. Gold fingers should be bright, no scoring. Next: the terminal block pins—no bent pins, no corrosion. Look for any burn marks around the input section.
3. Live Functional Test
   We test the 2N2113-05 in an ACS800 test chassis with a known‑good RMIO board. Procedure:
   • Power‑up: verify power LED lights
   • Digital inputs: apply 24 VDC to each DI. Verify status in drive parameters.
   • Digital outputs: command each DO on/off. Verify contact closure with ohmmeter.
   • Analog inputs: inject 0 V and 10 V on AI1. Verify readings.
   • Analog inputs: inject 4 mA and 20 mA on AI2 (jumper set). Verify readings.
   • Analog outputs: command 4 mA and 20 mA on AO1. Verify output at terminals.
   • Soak test: run all channels for 1 hour, monitor for drift or faults.
4. Load Test
   Connect 0.5 A load to each digital output. Cycle 10 times. Verify contacts hold.
5. Final QC & Packaging
   Passed boards go back in anti‑static bags, then bubble wrap, then a carton with QC sticker showing test date, channel status, and load test results.

Field Replacement Pitfalls

I/O boards are simple. That’s why people skip the steps that matter.

1. Jumper settings.
   The 2N2113-05 has jumpers for analog input type (voltage/current) and analog output type. I’ve seen a plant with a pressure reading that was off by half because the jumper was set for 0–10 V and the sensor was 4–20 mA. Photograph the jumper settings before you pull the old board.
2. ❌ Digital output load.
   The digital outputs are rated for 0.5 A. I’ve seen a plant switch a 2 A solenoid directly. The output died. The board was fine otherwise, but that channel was dead. Use an interposing relay for heavy loads.
3. Ground loops.
   The analog inputs share a common return. If you have two sensors with different power supplies, you can get a ground loop. I’ve seen a plant with jumpy analog readings that traced back to a ground loop. The board was fine. The wiring was the problem.
4. ESD.
   The board has CMOS logic. A winter day, a dry warehouse, and a tech without a wrist strap can zap an input buffer. I’ve seen a board that passed power‑up but failed the analog input test. Wrist strap. Every time.
5. RMIO compatibility.
   The 2N2113-05 works with specific RMIO board revisions. I’ve seen a plant buy a board that wouldn’t work with their drive. The RMIO was too old. Check the RMIO revision before you order.

Get these five right and you’ll cut rework time by 90%.

New Original vs. Refurbished: Why It Matters

“New Original (New Surplus)” means this ABB 2N2113-05 was built by ABB, never installed, and never repaired. The optoisolators are fresh. The analog circuits haven’t drifted. The edge connector has never been mated.

Refurbished I/O boards are risky. The analog circuits are sensitive. A refurb board might have been in a plant where it got hit by lightning—it still works, but the analog accuracy is off. I’ve seen a refurb board that passed a 0 V and 10 V test but was 0.5 V off at 5 V. The drive was controlling a valve based on that reading. The process was unstable.

What we provide:

• Traceable serial number (matches ABB production records)
• Full I/O test (4 DI, 2 DO, 2 AI, 2 AO)
• Load test on digital outputs (0.5 A, 10 cycles)
• Analog linearity test (0%, 50%, 100%)
• Jumper settings recorded
• Original anti‑static bag (if available) or fresh bag with QC seal
• 12‑month warranty

Pricing context:
Our price sits above the cheapest used listings. It’s also below what a new board would cost if ABB still made them. You’re paying for the test, the warranty, and the certainty that the analog readings aren’t going to drift.

Performance Benchmarks & Test Results

All tests performed on ACS800 test chassis, 25 °C ambient.

Thermal performance note:
At 50 °C ambient, the board runs warm—about 60 °C surface temp. The optoisolators are rated for 85 °C, so it’s fine. The analog circuits drift about 0.2% at high temp. If your cabinet runs hot, expect readings to shift. Let the drive warm up for 30 minutes before you trust critical analog values.

One more thing from the field:
The 2N2113-05 has a small sticker on the back with the revision number. I’ve seen a plant install a board, the drive wouldn’t recognize it, and they blamed the board. The revision was wrong. The board was fine. Check the revision before you install.

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