Product Intro

This integrated DC temperature controller combines temperature acquisition and DC temperature output into one unit, directly driving DC loads without the need for external data acquisition devices or solid-state relays. It features a built-in PID algorithm for precise output control. Supporting one uplink Ethernet port and two RS485 communication channels, it can connect up to 15 slave devices in parallel, using the Modbus TCP/RTU protocol. It boasts high stability, strong anti-interference capabilities, and over-temperature protection, ensuring safe and reliable operation.

Product overview

The integrated DC thermostat integrates temperature acquisition and DC temperature control output, allowing direct connection to DC loads without the need for external data collectors or solid-state relays. The thermostat calculates proportional PID output values ​​based on the acquired temperature value (PV) and setpoint (SV). It can control heating power devices through various output modes to achieve temperature control. The device's host computer provides one 100M uplink network interface for connection to a host computer and one downlink RS485 interface for connection to slave devices. The slave device supports two RS485 interfaces, one for connecting to the host computer and one for connecting to downlink slave devices, supporting up to 15 slave devices in parallel. The device communicates using the standard Modbus TCP/RTU protocol.

The device features precise temperature control, excellent stability, strong anti-interference capabilities, and multi-level over-temperature protection. The system includes built-in functions such as output cessation upon over-temperature alarm and output shutdown upon exceeding the control temperature upper limit, effectively protecting the safety of the controlled items.

Device model list

Product features

Industrial design

⚫ High-performance industrial-grade 32-bit processor

⚫ Supports long-term stable operation in the -20~85℃ range

⚫ Metal casing, resistant to electromagnetic interference

Reliability and stability

⚫ A watchdog timer ensures long-term system stability

⚫ A comprehensive protection mechanism ensures device stability

⚫ Built-in surge and ESD protection for the power supply and RS485 interface

⚫ Reverse polarity protection for the input power interface and short-circuit protection for load output channels

Ease of use

⚫ The device supports standard DIN35 rail mounting.

⚫ Plug-and-play terminal blocks are used for easy maintenance.

⚫ Plug-and-play operation is supported, eliminating the need for complex configuration.

⚫ Communication utilizes standard Modbus TCP/RTU protocol.

⚫ A Type-C debug port is provided on the host for easy debugging.

⚫ Configuration management is supported via host software (TSC).

Product features

⚫ Supports 4 channels of thermocouple temperature acquisition and 4 channels of control output (can be directly connected to DC loads)

⚫ Supports the Modbus TCP/RTU standard protocol and function codes 01, 03, 05, 06, 15, and 16

⚫ The thermostat supports 100M Ethernet upstream communication and RS485 downstream communication with up to 15 slave devices

⚫ The RS485 communication interface uses a standard network cable for direct connection, making installation easy and optically isolated

⚫ The thermostat supports standard DIN35 rail mounting for easy installation, with a compact design and minimal footprint

⚫ The thermostat features open PID parameter settings, supporting independent PID settings for each channel

⚫ The device features multiple over-temperature protection mechanisms and a load output disconnection alarm

⚫ Temperature control accuracy ≤±0.5°C, temperature acquisition accuracy ≤±1.0°C, and a resolution of 0.01°C

Technical Parameters

The integrated DC thermostat (TUD8x04) series includes two models: TUD8004 and TUD8104. Detailed thermostat parameters are as follows.

Device interface function.

Thermostat Interface Definition and Description

Common faults

During device use, some faults may occur, and the user can restore the normal operation of the

device according to the faults and solutions listed below. If the problem cannot be solved, please contact our company.

Power Failure

Symptom: After powering on, all panel indicators are off.

Troubleshooting:

1. Check the power supply wiring for proper connection and contact with the terminals.

2. Check the power cable for reverse polarity.

3. Use a multimeter to measure the input voltage to ensure it is within the specified range (12-36 VDC).

Communication Failure

Symptom: RS485 communication failure

Troubleshooting:

1. Check the device parameters for correct configuration.

2. Check the panel indicators for correct display.

3. Check the communication wiring for correct configuration. After ensuring the wiring is correct, check the communication parameters for correct configuration.

4. Check the 485 DIP switch address for the correct communication address with the host computer.

Abnormal Temperature Acquisition

Symptom: Abnormal Temperature Acquisition

Troubleshooting:

1. Check the temperature sensor wiring for correct connection.

2. Check the terminal blocks for tightness and no looseness.

3. Check the temperature sensor for proper contact with the object being measured. 4. Check that the connected temperature sensor model matches the device model.

5. Check that the register address and quantity read by the host computer are correct.