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Yudian AI-858

Yudian AI-858 Intelligent PID Temperature Controller

User Manual

1. Introduction

The Yudian AI-858 is an intelligent PID temperature controller designed for precise temperature management in various industrial and laboratory applications. This device features advanced slope control capabilities and high-resolution measurement, ensuring stable and accurate process control. This manual provides essential information for the safe and efficient operation of your AI-858 controller.

Front view of the Yudian AI-858 PID Temperature Controller, showing PV and SV displays and control buttons.
Figure 1: Front view of the Yudian AI-858 PID Temperature Controller, showing PV (Process Value) and SV (Set Value) displays and control buttons.

2. Specifications

The Yudian AI-858 controller offers robust performance and versatile features for demanding control environments.

FeatureValue
TheoryTEMPERATURE CONTROLLER
Place of OriginChina
Customized supportOdm
Infrared ResolutionNone
Brand NameYudian
Model NumberAI-858
Thermal color palettesNone
Temperature Control Accuracy0.2%
Temperature range-9999~+9999
MaterialAbs
TypePid temperature sensor

Key Features:

  • Multiple Input Specifications: Supports various sensor types for diverse applications.
  • High Precision: Options ranging from 0.3% to 0.1% accuracy, with some instruments achieving 0.001°C resolution and 0.05% maximum measurement accuracy.
  • Versatile Control: Capable of precise control for temperature, pressure, humidity, flow, and liquid levels.
  • Modular Technology: Flexible instrument configuration to meet diverse customer requirements.
  • DinRail Combination Mode: Supports mixed configurations and bus connections, compatible with RS485, TCP, and EtherCAT converters.
  • Robust Protection: Up to 6KV surge pulse immunity and 380VAC misdirection protection at the power input.
  • Energy Efficient: Low energy consumption, decreasing from 0.5-0.6W to 0.2-0.3W in current models under no-load conditions.
  • Advanced Tuning: Features APID Auto-Tuning for precise control and AAT Quick Auto-Tuning for stable performance without overshoot.
Image showing High-Performance PID Temperature Controllers with multiple input specifications and precision options, and precise control for temperature, pressure, humidity, flow, and liquid.
Figure 2: Overview of Yudian High-Performance PID Temperature Controllers, highlighting precise control capabilities for various parameters.
Image titled 'Various sizes' displaying different models and dimensions of Yudian controllers.
Figure 3: Various sizes and models of Yudian controllers, demonstrating product range.

3. Setup

3.1 Unpacking and Inspection

Upon receiving your AI-858 controller, carefully unpack it and inspect for any signs of damage during transit. Ensure all components are present according to the packing list.

3.2 Mounting

The AI-858 is designed for panel mounting. Ensure adequate space for ventilation and access to terminals. Refer to the dimensions provided in the specifications for proper panel cutout size.

3.3 Wiring Connections

All wiring should be performed by qualified personnel and in accordance with local electrical codes. Ensure power is disconnected before making any connections.

  • Power Supply: Connect the main power supply to the designated terminals. The controller supports a wide range of AC/DC power inputs.
  • Sensor Input: Connect your temperature sensor (thermocouple, RTD) to the input terminals. Ensure correct polarity for thermocouples.
  • Control Output: Connect your control device (SSR, relay, SCR, motor valve) to the appropriate output terminals. Verify the output type (e.g., relay, voltage, current) matches your actuator.
  • Communication (Optional): If using communication features (e.g., RS485), connect the data lines to the communication terminals.
Rear view of the Yudian AI-858 controller, displaying terminal connections for inputs and outputs.
Figure 4: Rear view of the AI-858 controller, showing terminal block for wiring connections. Consult the specific model's wiring diagram for detailed pinouts.
Diagram illustrating the modular technology of Yudian controllers, showing various input types (thermocouple, RTD, pressure transmitter, flow meter, level gauge) and output types (SSR, relay, linear current/voltage, SCR, motor valve).
Figure 5: Modular technology diagram illustrating various input and output options for Yudian controllers.

4. Operating Instructions

4.1 Front Panel Overview

The front panel of the AI-858 features two main displays (PV and SV), status indicators, and control buttons:

  • PV (Process Value) Display: Shows the current measured temperature.
  • SV (Set Value) Display: Shows the desired setpoint temperature.
  • MV (Manipulated Value) Display (on some models): Shows the output power percentage.
  • Buttons:
    • ▲ / ▼ (Up/Down Arrows): Used to adjust setpoints or navigate menu parameters.
    • A/M (Auto/Manual): Toggles between automatic and manual control modes.
    • STOP / RUN: Starts or stops the control process.
    • Circular Arrow (Function/Enter): Typically used to enter menu, confirm settings, or cycle through display modes.
  • Indicators: LEDs for MAN (Manual), PRG (Program), MIO (Manual Input/Output), COM (Communication), OP1/OP2 (Output 1/2), AL1/AL2 (Alarm 1/2), AU1/AU2 (Auxiliary Output 1/2).
Image showing the Yudian AI-858 controller with PV, SV, and MV displays, indicating its advanced control capabilities.
Figure 6: Front panel of an AI-858 variant, showing PV, SV, and MV displays along with control buttons and status indicators.

4.2 Basic Operation

  1. Power On: After ensuring all wiring is correct, apply power to the controller. The displays will light up.
  2. View Process Value (PV): The upper display (PV) will show the current temperature measured by the sensor.
  3. Set Setpoint Value (SV):
    • Press the 'Circular Arrow' button briefly to enter setpoint adjustment mode (SV display may flash).
    • Use the ▲ and ▼ buttons to adjust the SV to your desired temperature.
    • Press the 'Circular Arrow' button again to confirm the setting and exit adjustment mode.
  4. Start/Stop Control: Use the RUN and STOP buttons to initiate or halt the control process.
  5. Auto/Manual Mode: Press the A/M button to switch between automatic PID control and manual output control. In manual mode, you can directly set the output power (MV).

4.3 Advanced Settings (PID Tuning, Slope Control)

For advanced settings such as PID parameters, alarm configurations, or slope control profiles, refer to the detailed programming guide specific to your AI-858 model. These settings are typically accessed by pressing and holding the 'Circular Arrow' button to enter the parameter menu, then navigating with arrow keys and confirming with the 'Circular Arrow' button.

The AI-858 features APID Auto-Tuning and AAT Quick Auto-Tuning technologies to optimize control performance. It is recommended to perform auto-tuning after initial setup or if process conditions change significantly.

5. Maintenance

Regular maintenance ensures the longevity and optimal performance of your Yudian AI-858 controller.

5.1 Cleaning

  • Keep the controller's front panel clean and free from dust and debris.
  • Use a soft, dry cloth for cleaning. Do not use abrasive cleaners or solvents, as they may damage the display or casing.

5.2 Environmental Conditions

  • Ensure the operating environment is within the specified temperature and humidity ranges.
  • Avoid exposing the controller to excessive vibration, corrosive gases, or direct sunlight.
  • Maintain proper ventilation around the unit to prevent overheating.

5.3 Wiring Inspection

  • Periodically check all wiring connections for tightness and signs of corrosion or damage.
  • Ensure sensor wires are not run alongside high-voltage power lines to prevent interference.

6. Troubleshooting

This section addresses common issues you might encounter with your AI-858 controller.

6.1 Common Problems and Solutions

  • No Display/Power:
    • Check power supply connections and voltage.
    • Verify the power fuse (if accessible) is intact.
  • Incorrect Temperature Reading (PV):
    • Ensure the sensor is correctly wired and connected.
    • Verify the sensor type configured in the controller matches the actual sensor used.
    • Check for sensor damage or faulty wiring.
    • Ensure the sensor is properly installed in the process.
  • No Output/Control Not Working:
    • Check if the controller is in RUN mode and Auto mode (not Manual).
    • Verify output wiring to the actuator (SSR, relay, etc.).
    • Check if the output type configured in the controller matches the connected actuator.
    • Ensure the setpoint (SV) is correctly configured relative to the process value (PV) to trigger output.
    • Check for alarm conditions that might inhibit output.
  • Controller Overshoots/Undershoots Setpoint:
    • Perform auto-tuning to optimize PID parameters.
    • Manually adjust PID parameters if auto-tuning is insufficient for your specific process.
  • Communication Errors:
    • Verify communication wiring (e.g., RS485 A/B lines).
    • Check communication parameters (baud rate, parity, address) in the controller and host system.
    • Ensure proper termination resistors are used if required.

If problems persist after attempting these solutions, contact technical support.

7. Warranty and Support

The Yudian AI-858 Intelligent PID Temperature Controller comes with a 5-year warranty from the date of purchase, covering manufacturing defects and malfunctions under normal operating conditions. Please retain your proof of purchase for warranty claims.

For technical assistance, troubleshooting beyond this manual, or warranty service, please contact your supplier or Yudian customer support. Provide your model number (AI-858) and a detailed description of the issue.

8. User Tips

  • Initial Setup: Always double-check wiring before powering on. Incorrect wiring can damage the unit or connected equipment.
  • Auto-Tuning: For best performance, run the auto-tuning function after initial installation and whenever the controlled process or load changes significantly. This helps the controller adapt to your specific system.
  • Parameter Backup: If your model supports it, consider backing up your configuration parameters, especially after successful tuning, to easily restore settings if needed.
  • Environmental Control: While the AI-858 has robust protection, operating it within recommended environmental limits (temperature, humidity, vibration) will extend its lifespan.
  • Read the Full Manual: For complex applications or specific features like slope control, always refer to the comprehensive manual provided by Yudian for detailed programming instructions.