Product Introduction

Model Explanation

• 07: AC31/Procontic 90 series platform

• KP: Communication Processor (Modbus interface)

• 53: Hardware and functional version (dual‑port Modbus)

• Ordering Number: 1SBP260162R1001

Technical Parameters

• Power Supply: 24 VDC (19.2–30 VDC range)

• Current Consumption: Approx. 250 mA

• Communication Protocol: Modbus RTU (master/slave selectable)

• Serial Interfaces: 2× ports (RS‑232 mini‑DIN, RS‑485 terminal blocks)

• Baud Rate: 1200–115200 bps

• Data Format: 8N1, 8E1, 8O1 configurable

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

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

• Isolation: Communication side vs. backplane 500 VAC

• Mounting: 35 mm DIN rail (TH35‑15/7.5)

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

• Weight: Approx. 0.26 kg

• Certifications: CE, UL, RoHS

Interface and Communication Configuration

• Port 1: RS‑232 via mini‑DIN connector (point‑to‑point)

• Port 2: RS‑485 via screw terminals (multi‑drop bus)

• Modbus Modes: Master (scan up to 247 slaves) / Slave (responds to master)

• Termination: Built‑in RS‑485 termination resistor (ON/OFF switch)

• LED Indicators:

  • PWR (green): Power OK

  • COM1/COM2 (yellow): Port activity

  • ERR (red): Communication/configuration fault

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

Core Functions

1. Modbus RTU Communication: Acts as Modbus master or slave to link AC31 PLCs with drives, HMIs, sensors, and third‑party controllers.

2. Dual‑Port Isolated Routing: RS‑232 for local connection and RS‑485 for long‑distance bus, with electrical isolation.

3. Protocol Conversion: Bridges AC31 proprietary protocols to open Modbus for system integration.

4. Network Expansion: Extends AC31 communication capacity without CPU slot loss.

5. Diagnostics: Onboard LEDs and AC31 system diagnostics for quick fault localization.

Application Scenarios

• AC31 System Expansion: Adding Modbus RTU ports to AC31 PLCs for third‑party device connection.

• Factory Floor Networking: Interfacing AC31 with VFDs, soft starters, and Modbus sensors in production lines.

• Legacy System Integration: Connecting older AC31/Procontic systems to modern Modbus‑based architectures.

• Remote I/O Communication: Linking distributed Modbus I/O stations to the central AC31 controller.

• Building Automation: HVAC and lighting control with Modbus RTU devices.

Usage and Maintenance Instructions

• Installation: Mount on 35 mm DIN rail; ensure vertical orientation and adequate ventilation.

• Wiring: Connect 24 VDC power; use shielded cable for RS‑485 and mini‑DIN for RS‑232.

• Configuration: Set Modbus address, baud rate, parity, and master/slave mode via AC31 programming software.

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

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

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