Description
Product Core Brief
- Model: 3BHB003688R0101
- Brand: ABB
- Series: ACS600 / KUC711 / 800xA DCS
- Core Function: I/O interface control board
- Product Type: Digital/analog interface module
- Key Specs: 220 VAC input, 30 kHz switching, 4 serial ports
- Condition: New Surplus
Key Technical Specifications
- Input voltage: 220 VAC ±10%
- Output frequency: 30 kHz
- Serial ports: 4 RS-232/485
- Network ports: 7 Ethernet/IP
- Port isolation: 520 VDC
- Weight: 3.17 kg (shipping 4 kg)
- Operating temperature: -40°C to +85°C
- Certification: CE, UL, ISO 9001
- Dimensions: Eurocard 3U height (160 mm)
- Power dissipation: <25 W
- 3BHB003688R0101
Product Introduction
ABB 3BHB003688R0101 is an I/O interface board for ACS600 high-voltage drives and KUC711 control systems, handling digital/analog signals between inverter main board and field devices. Mounts in 19″ rack slot 19-21 as subboard in DCS cabinets.
Processes sensor feedback and drive commands at 30 kHz with 4 serial + 7 Ethernet ports for HMI/SCADA links. Used in ACS6000 HV inverters and 800xA process control—shock/vibration rated for turbine halls. DIN rail or rack mount; needs 220 VAC external PSU. Match firmware with DriveWindow before field install.
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No interface LEDs, drive dark | 220 VAC <198 V or fuse chain open | ✅ High | Measure L/N 220 VAC with Fluke 115; continuity fuse | Check 5 A slow-blow; verify phase rotation ABC |
| Serial ports no handshake | Baud/DIP mismatch or RS485 termination | ✅ High | HyperTerminal 9600 8N1 loopback pins 2-3 | Add 120 Ω terminators at ends; null modem for PC |
| Ethernet no link ch4-7 | MDI/MDI-X auto-fail or cable Cat5 bad | ✅ Medium | Link lights all ports; ping 192.168.1.x | Straight cable <100 m; force 100/full speed |
| Analog I/O drift >1% | Common mode >5 V or shield ground loop | ✅ High | Scope 4-20 mA loop; CMRR test 1 kHz | Single-end ground shields; twist pairs 0.75 mm² |
| Drive trip F0005 | Backplane handshake timeout | ❌ Low | DriveWindow diagnostic buffer slot 19 empty | Reseat Eurocard 3x; clear config cache |
Capture fault codes (%W00100+) and photo DIP switches before reset. Interface boards fail from EMI 85%—ferrite all cables. Support needs rack layout.
Frequently Asked Questions (FAQ)
ACS600 or 800xA DCS—which system?
Both—KUC711AE101 daughterboard in ACS6000 HV drives, slot 19-21 in 800xA racks. Read silkscreen for exact host.
220 VAC single phase only?
Yes, no 3-phase—external transformer if needed. 30 kHz PWM output to main inverter bridge.
Max drives or drops per board?
Controls 1-4 HV inverters via fiber; 32 Modbus slaves on serials. EtherNet/IP Class 1 adapter 128 CIP connections.
Hot-swappable in live cabinet?
No—live extract shorts VME64 backplane. Full shutdown; discharge caps 5 min wait. ESD strap required.
❗ Field install killer?
❗ Untwisted pairs >30 cm on analog runs—picks 50 Hz noise, trips IGBTs. Ferrite + twist every field wire. Melted bridge once
Condition and test verification?
New Surplus: OEM excess, full 4-20 mA loop + Ethernet ping test all 7 ports. Isolation verified 520 VDC; no bent pins. Reports ready.
Warranty, dispatch?
1-year functional. In stock, ships post 48-hour burn-in cycle. Express available.




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