Product Introduction

Model Explanation

• 07: AC31/Procontic 90 series platform

• KP: Communication Processor

• 92: Hardware revision and feature set (multiport, multi‑protocol)

• E1: Variant/version (enhanced, isolated)

• Ordering Number: GJR5251500R1161

Technical Parameters

• Power Supply: 24 VDC ±10% (19.2–30 VDC)

• Current Consumption: ~300 mA typical

• Processor: 32‑bit industrial MCU, 180 MHz

• Memory: 1 MB Flash (firmware/config), 256 KB RAM (data buffers)

• Serial Interfaces: 2× isolated channels (RS‑232/RS‑422/RS‑485 software‑selectable)

• Protocols Supported: Modbus RTU (master/slave), ABB RCOM, CS31, ASCII

• Baud Rate: 300–115200 bps (per port)

• Data Format: 7/8 bits; even/odd/no parity; 1/2 stop bits

• Isolation: 500 VAC between ports and backplane

• Operating Temperature: 0 °C to +55 °C

• Storage Temperature: -40 °C to +75 °C

• Mounting: 35 mm DIN rail or AC31 rack slot

• Dimensions (W×H×D): 51 × 110 × 75 mm

• Weight: Approx. 0.55 kg

• Certifications: CE, UL, RoHS

Interface and Communication Configuration

• Port 1: DB9 connector (RS‑232/RS‑422) for point‑to‑point links (e.g., HMI, modem)

• Port 2: Terminal block (RS‑485) for multi‑drop buses (up to 32 nodes)

• Protocol Selection: Configurable per port via AC31 engineering software

• Termination: Built‑in 120 Ω resistor for RS‑485 (DIP switch)

• LED Indicators:

  • PWR (green): Power OK

  • COM1/COM2 (yellow): Port activity

  • ERR (red): Fault (parity error, timeout, config mismatch)

• Wiring: Use shielded twisted pair (STP) for RS‑485; separate from high‑voltage cables

Core Functions

1. Multi‑Protocol Routing: Simultaneously runs Modbus, RCOM, or CS31 on two ports for flexible integration.

2. Protocol Conversion: Translates between ABB proprietary protocols (RCOM/CS31) and Modbus for legacy‑modern system bridging.

3. Isolated Communication: Electrical isolation between ports and backplane reduces noise and ground loop risks.

4. Network Expansion: Adds two high‑speed serial channels to AC31 CPUs without occupying CPU slots.

5. Diagnostics & Monitoring: Real‑time LED status and AC31 system logs for quick fault localization.

Application Scenarios

• Legacy System Integration: Connecting AC31/Procontic 90 to Modbus RTU devices (drives, meters, HMIs).

• Distributed I/O Networks: Linking remote CS31 or RCOM I/O stations to central AC31 controllers.

• SCADA/DCS Connectivity: Exchanging data between AC31 and higher‑level systems via Modbus or ASCII.

• Factory Floor Automation: Production lines with mixed ABB and third‑party serial devices.

• Process Industries: Water treatment, power, and chemical plants requiring reliable multi‑protocol communication.

Usage and Maintenance Instructions

• Installation: Mount on 35 mm DIN rail or insert into AC31 rack; ensure vertical orientation and 50 mm clearance for ventilation.

• Wiring: Connect 24 VDC power; use STP for RS‑485 and DB9 for RS‑232; ground shields at one end only.

• Configuration: Use AC31 programming software to set port parameters (protocol, baud rate, address, mode).

• Termination: Enable RS‑485 termination only at the two physical ends of the bus.

• Routine Check: Inspect LED status quarterly; verify terminal tightness and cable shielding annually.

• Troubleshooting: Check power supply and wiring; confirm network termination and node addresses; re‑download configuration if errors persist.