Product Introduction

Model Explanation

• 07: AC31/Procontic 90 series platform

• KP: Communication Processor

• 93: Hardware revision (dual‑channel Modbus)

• B: Variant (enhanced isolation, industrial temperature)

• Ordering Number: GJR5253200R1161

Technical Parameters

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

• Current Consumption: ~330 mA typical

• Processor: 32‑bit industrial MCU, 200 MHz

• Memory: 2 MB Flash, 512 KB RAM

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

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

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

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

• Isolation: 1500 VAC between ports and backplane

• Operating Temperature: -20 °C to +60 °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. 0.4 kg

• Certifications: CE, UL, RoHS

Interface and Communication Configuration

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

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

• Protocol Selection: Configurable per port via AC31 Control Builder software

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

• LED Indicators:

  • PWR (green): Power OK

  • COM1/COM2 (yellow): Port activity (TX/RX)

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

• Wiring: Shielded twisted pair (STP) for RS‑485; separate from high‑voltage cables; single‑end grounding

Core Functions

1. Dual‑Channel Modbus Communication: Simultaneous master/slave operation on two ports for Modbus RTU/ASCII networks.

2. Legacy ABB Protocol Bridge: Translates between Modbus and ABB RCOM/CS31 for connecting AC31 to older Procontic/MasterPiece systems.

3. Isolated Industrial Communication: 1500 VAC isolation reduces electrical noise and ground loops in harsh environments.

4. High‑Speed Data Exchange: Baud rates up to 115200 bps for real‑time control and monitoring.

5. Network Diagnostics: LED status and AC31 system logs for quick fault identification and maintenance.

Application Scenarios

• Modbus Device Integration: Connecting AC31 to Modbus RTU drives, meters, sensors, and HMIs in manufacturing and process industries.

• Legacy System Migration: Upgrading Procontic T200/MasterPiece 200 systems to AC31/AC500 while preserving existing Modbus wiring.

• Distributed I/O Networks: Linking remote Modbus I/O stations to central AC31 controllers in water treatment, power, and chemical plants.

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

• Factory Floor Automation: Mixed ABB and third‑party serial devices in automotive, food & beverage, and packaging lines.

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 Control Builder to set port parameters (protocol, baud rate, address, master/slave 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.