Product Introduction

Model Explanation

• 07: Procontic 90 / AC31 series platform

• KT: CPU with DC transistor outputs

• 97: High‑performance grade with maximum onboard I/O

• D: Extended temperature + enhanced EMC variant

Technical Parameters

• Part Number: GJR5253000R0270

• Processor: 32‑bit RISC

• Power Supply: 24 VDC (18–30 VDC), ≤15 W, reverse polarity protection

• Memory: 480 KB Flash (program); 256 KB non‑volatile RAM (data)

• Onboard Digital I/O: 24 × 24 VDC DI (sink/source, isolated, 3 groups of 8); 16 × transistor DO (24 VDC/0.5 A, isolated, 2 groups of 8, short‑circuit protected)

• Onboard Analog I/O: 8 × 12‑bit AI (configurable 0–10 V/±10 V/4–20 mA/PT100); 4 × 12‑bit AO (configurable 0–10 V/±10 V/4–20 mA)

• High‑Speed Counter: 2 × 50 kHz (hardware, 7 configurable modes)

• Operating Temperature: -25°C to +60°C (extended industrial range)

• Storage Temperature: -40°C to +75°C

• Protection Class: IP20

• Dimensions: 160 × 100 × 95 mm

• Weight: ≈0.8 kg

• Certifications: CE, UL, CSA, RoHS, enhanced EMC compliance

Interface & Communication Configuration

• COM1: RS‑232 port for programming, HMI connection, and ASCII communication

• COM2: RS‑485 port supporting Modbus RTU master/slave and CS31 bus

• CS31 System Bus: Connects up to 31 remote I/O slaves for system expansion

• Extension Port: For additional communication modules (e.g., Profibus‑DP, Ethernet)

• LED Indicators: PWR, RUN, ERR, TX/RX (RS‑485)

• Programming Tool: Control Builder AC31, 907 PC 331

• Real‑Time Clock (RTC): Integrated for data logging and time‑stamping

Core Functions

1. Extended Temperature Reliability: Operates reliably at -25°C to +60°C, suitable for cold storage, outdoor, and high‑temperature industrial environments.

2. Enhanced EMC Protection: Reinforced isolation and filtering circuits improve resistance to electromagnetic interference in heavy‑industry settings.

3. High‑Density Mixed I/O: 24DI/16DO + 8AI/4AO supports complex analog/digital control for temperature, pressure, flow, and logic sequencing.

4. Large Memory Capacity: 480 KB Flash enables complex control algorithms, PID loops, and data logging.

5. Dual 50 kHz Counters: For high‑speed encoder, flow meter, and motion control applications.

6. Multi‑Protocol Communication: Modbus RTU and CS31 bus support seamless integration with diverse devices and systems.

7. RTC & Data Logging: Standard RTC provides accurate time stamps for process data, supporting quality control and troubleshooting.

Application Scenarios

• Harsh Environment Automation: Cold storage logistics, outdoor machinery, and high‑temperature production lines (e.g., metallurgy, ceramics).

• Heavy Industry Control: Steel mills, cement plants, and mining equipment with high electromagnetic interference.

• Standalone Extreme‑Condition Systems: Unmanned monitoring stations, remote pumping stations, and solar/wind power equipment.

• Legacy System Upgrades: Replacing older AC31 CPUs in systems with wide temperature fluctuations or poor EMC conditions.

• General Industrial Machinery: Textile machinery, plastic extruders, and assembly lines requiring high reliability.

Usage & Maintenance Instructions

• Installation: Mount on standard DIN rail; ensure vertical orientation with 50 mm clearance around the unit for ventilation.

• Wiring: Use shielded cables for analog signals; separate power and signal wiring to reduce noise. Tighten terminals to recommended torque (0.5–0.8 Nm).

• Power‑On Check: Verify 24 VDC supply voltage; check PWR LED (steady on = normal). Clear all faults before operation.

• Programming: Use Control Builder AC31; download programs via RS‑232 or CS31 bus. Back up programs to external storage regularly.

• Routine Maintenance: Inspect terminals quarterly for tightness; clean dust from ventilation slots every 6 months. Check LED indicators for abnormal status (ERR LED flashing = fault).

• Troubleshooting: For communication faults, check cable wiring, baud rate, and address settings. For I/O errors, verify sensor/actuator wiring and signal types.

• Environmental Protection: Avoid exposure to direct moisture and corrosive gases. Operate within -25°C to +60°C and 5%–95% non‑condensing humidity.

• Replacement: Disconnect power before replacement; use identical model (07KT97D) and reconfigure communication parameters to match the system.