GE TJK436F000

Product Overview

• Multi-channel control: Supports 4 independent PID control loops, and each channel can be configured with different control strategies.
• Communication integration: Built-in Modbus RTU/TCP protocol, enabling seamless connection with PLC/SCADA systems.
• Adaptive adjustment: Features self-tuning PID parameter function, which shortens system debugging time.

Product Parameters

• Product Model: TJK436F000
• Manufacturer: General Electric (GE)
• Product Type: Multi-channel Temperature Controller
• Number of Control Channels: 4 channels (independent PID)
• Input Signal Type: Thermocouple (Type J/K/T), RTD (PT100), 4-20mA
• Output Signal Type: Relay (5A@250V AC), SSR Drive (12V DC), 4-20mA
• Control Accuracy: ±0.1% FS (thermocouple), ±0.05°C (RTD)
• Communication Interface: RS-485 (Modbus RTU), Ethernet (Modbus TCP)
• Operating Temperature Range: -10°C to +60°C (14°F to 140°F)
• Power Supply Voltage: 24V DC (±10%) or 100-240V AC
• Protection Class: IP20 (panel mounting)
• Certification Standard: CE, UL 508, IEC 61010-1

Structure and Composition

• Signal Input Module: 4-channel isolated input circuit, supporting automatic identification of thermocouple, RTD, and analog signals.
• PID Control Engine: 32-bit microprocessor, running an adaptive PID algorithm (P/I/D parameters can be adjusted manually).
• Output Drive Unit: Relay output (for contactor control) and SSR drive (for solid-state relays).
• Communication Board: Dual communication interfaces (RS-485 + Ethernet), supporting remote monitoring via Modbus protocol.
• Human-Machine Interface (HMI): 4.3-inch color LCD touchscreen, displaying real-time temperature curves and alarm status.

Key Features and Advantages

1. High-precision Temperature Control
   • Measurement accuracy of ±0.1% FS, combined with self-tuning PID, achieves temperature control stability of ±0.5°C.
   • Supports thermocouple open-circuit detection and RTD 3-wire compensation to reduce sensor errors.
2. Flexible Output Configuration
   • Each channel can independently select relay, SSR, or analog output, adapting to different actuators such as heaters and cooling valves.
   • Supports Time Proportioning Control (PWM) to optimize energy efficiency.
3. Convenient System Integration
   • Communicates with GE RX3i PLC or third-party SCADA (e.g., Ignition) via Modbus TCP.
   • Provides alarm contact output (over-temperature, sensor failure, etc.) for direct interlocking with safety systems.
4. Industrial-grade Reliability
   • Relay service life of 1 million times, suitable for frequent switching scenarios.
   • Certified by IEC 61010-1 electrical safety standard to ensure operational safety.

Typical Application Case

Installation and Maintenance

Installation Points

• Avoid parallel wiring with frequency converters and high-current cables to reduce interference.
• Use 3-wire wiring for RTD to compensate for lead resistance errors.

Maintenance Recommendations

• Check the status of relay contacts monthly (clean if oxidized).
• Calibrate sensors regularly (annual calibration is recommended).