Dual Control for Heating and Cooling ControllerKey Term Explanation (Industrial Context)
Dual Control for Heating and Cooling Controller is industrial process control instruments designed with measurement and control technology. Dual Control for Heating and Cooling Controller, support Ethernet, and boast high measurement and control accuracy. The instruments support input of 47 types of industrial signals, offer dual-channel heating and cooling control, and are compatible with valve position feedback, among other capabilities.
Detailed Specifications
| Control Cycle | 50mS/100mS |
| Measurement Accuracy | 0.001FS (using 24-bit AD) |
| Sampling Rate | 20Hz/10Hz |
| Control Output | |
| Analog Signals | 12 BIT (True DA) |
| 4-20mA, 0-20mA, 0-10mA, 0-10V, 2-10V, 0-5V, 1-5V | |
| Relay | 2A (250V AC) |
| Solid-State Relay (Transistor) | 22V 20mA |
| Thyristor | 3A 250V AC |
| Display Method | IPS TFT True-Color LCD |
| Signal Measurement Input Impedance |
≥500KΩ for voltage signals (≥100KΩ for 5V, 10V), ≤60Ω for current signals, ≥500KΩ for thermocouples Resistance measurement adopts a 3-wire system; the resistance of each signal transmission wire shall not exceed 10Ω |
| 8.1 Communication | Standard MODBUS RTU protocol (2-wire RS485) |
| Parity Check | None, Odd, Even |
| Communication Speed | 4800BPS, 9600BPS, 19200BPS, 38400BPS, 57600BPS |
| Communication Address Range | 1~247 |
| 8.2 Communication | Standard MODBUS TCP protocol |
| Communication Address | 0-255 |
| Subnet Mask | 0-255 |
| Gateway | 0-255 |
| Power Supply | 86~260V AC (47~63Hz) |
| Isolation Voltage | 2300V AC for 1 minute (isolation between input, output, and power supply) |
| Operating Temperature | 0~50℃ |
| Storage Conditions | Temperature -40℃~80℃; Humidity 0.1-0.9RH |
| EMC Standard | EN61326* |
| Executive Standard | IEC60950-1 |
| Protection Class | IP66 |
| Power Consumption | 12W |
Product Features
Full-Screen OVERVIEW Display Technology: 5-digit full-data display for real-time insight into each process control parameter, with a display range of ±99999.
Dual MODBUS RTU Communication, Optional MODBUS TCP Ethernet: Supports communication data synchronization; multi-instrument operation enables automatic SV (Set Value) synchronization, realizing data-synchronized control of multiple control instruments.
Communication-Based Digital PID Control: Can directly control one or multiple digital power control instruments, achieving full digital control.
Communication Data Support for 16-Bit Integer Standard: When the data range exceeds 16 bits, an offset address method is used to realize 32-bit data reading and writing, enabling high-precision, full-resolution real reading of process control.
24-Bit High-Speed Multi-Channel Synchronous Data Acquisition: Equipped with a 32-bit RISC instruction set industrial-grade microprocessor, featuring strong anti-interference capability and fast response.
Control Output Refresh Rate: 50ms, adapting to faster control processes.
4 Channels of Hard-Contact Alarm Output & Program Control Output: 9 channels of programmable DIO (Digital Input/Output) functions; each IO can be customized as input or output according to requirements.
Support for Dual-Sensor High-Low Temperature Switching & Redundancy Switching: Automatically switches to the backup channel when a sensor fails.
Dual-Channel Mathematical Calculation Function: Enables complex algorithm logic implementation.
20 Curves, 50 Segments per Curve: Supports in-segment cycling and program curve cycling.
Program Curves: Support arbitrary timed output control for 9 channels; integrate fixed time-scale function output mode and program curve time-scale function, with flexible configuration as needed. Also supports rate curve mode and classic time-mode curve input functions.
10 Groups of Grouped PID & 10 Groups of Grouped Output Limiting Control: Meets the requirements of various control working conditions.
Support for Analog Setting & Digital Remote Setting Functions.
Input Support for 47 Types of Industrial Standard Sensor Signals: Also supports non-standard signal input and multi-point linearization processing.
Model Selection & Dimensions
DK2904TS: 96×96×130mm (Cutout Dimension: 92×92mm)
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