Yamatake Sdc20 User Manual May 2026

8. Specifications

9. Warranty and Disclaimer

The Yamatake SDC20 is covered by a [ specify the warranty period] warranty. For details, please refer to the warranty document.

By using the Yamatake SDC20, you acknowledge that you have read and understood the contents of this user manual.

Appendix A: Troubleshooting Guide

| Issue | Solution | | --- | --- | | [List common issues and solutions] |

Revision History

[ List the revision history, including the date and description of changes]

This is just a draft, and you should review and modify it according to your specific needs and the product's features. Additionally, it's recommended to include more detailed information, such as diagrams, illustrations, and technical specifications.

Yamatake (Azbil) SDC20 is a compact, digital indicating controller designed for precise PID control of temperature and other industrial variables. While it is a legacy model, it remains widely used in various manufacturing environments for its reliability and straightforward interface. Core Functionality is a single-loop controller that utilizes PID control with "RationaLOOP"

—an Azbil proprietary algorithm designed to improve control performance by minimizing overshoot and providing better disturbance rejection compared to standard PID. Key Technical Specifications Input Types:

Multi-range capability supporting thermocouples (K, J, T, E, R, S, B, N, PL II, WRe5-26), RTDs (Pt100), and DC voltage/current (4-20mA, 0-5V, etc.). Control Outputs:

Available in several variations including relay, voltage pulse (for SSR drive), and current (4-20mA). yamatake sdc20 user manual

Dual 4-digit LED display. The upper display (green) typically shows the Process Value (PV) , while the lower display (orange) shows the Setpoint (SP) Standard 1/8 DIN size ( Navigation and Programming The controller interface consists of four primary keys:

Used to switch between operating modes and to confirm setting changes. Para (Parameter) Key:

Cycles through the parameter settings within a specific group. Up/Down Arrows: Used to increase or decrease values during configuration. Operation Modes

The manual categorizes settings into different "Banks" or setup groups: Operation Bank:

Daily adjustments like Setpoint (SP) and Auto-tuning (AT) initiation. Control Bank:

Tuning parameters including Proportional Band (P), Integral Time (I), and Derivative Time (D). Setup Bank: such as diagrams

Deep-level configuration such as input type selection, range limits, and output scaling. Quick Setup Steps

Ensure power is connected to the correct terminals (typically 1 and 2 for AC power) and that the sensor input matches the terminal diagram on the side of the unit. Input Configuration:

Enter the Setup Bank to define the sensor type. If the input type does not match the physical sensor, the unit will display an "AL01" (Sensor Error). Auto-Tuning (AT):

To automatically calculate PID values, navigate to the AT parameter in the Operation Bank and set it to "1" (ON). The controller will oscillate the output to learn the thermal characteristics of the system. Common Error Codes PV input failure (sensor burnout or incorrect wiring).

Configuration data error (usually requires a factory reset or hardware check). Internal memory error.

7. Maintenance and Troubleshooting

The Yamatake SDC20 is a high-performance digital indicating controller known for its precise temperature and process control. However, to unlock its full potential—from basic setup to advanced programming—a thorough understanding of the User Manual is essential.

Below is an organized overview of what you will find inside the official Yamatake SDC20 user manual, along with key tips for navigating it effectively.