User Manual Portable: Yamatake Sdc20

Introduction

The Yamatake SDC20 is a digital controller designed for various industrial control applications. This user manual provides detailed information on the installation, operation, and maintenance of the SDC20.

Table of Contents

1. Safety Precautions
2. Overview of the SDC20
3. Installation
4. Wiring
5. Configuration
6. Operation
7. Maintenance
8. Troubleshooting
9. Specifications

1. Safety Precautions

Before using the SDC20, please read and understand the following safety precautions:

• Always follow the instructions provided in this manual.
• Ensure that the SDC20 is installed and operated by qualified personnel.
• Do not touch the SDC20's electrical components or attempt to repair them.
• Keep the SDC20 away from water and moisture.
• Ensure that the SDC20 is used within its specified operating conditions.

2. Overview of the SDC20

The Yamatake SDC20 is a digital controller that features:

• 2-line LCD display
• 8-bit microprocessor
• Relay output
• Analog input
• Digital input/output

The SDC20 is designed to control and monitor various industrial processes, such as temperature, pressure, and flow rate.

3. Installation

1. Mounting: Mount the SDC20 on a DIN rail or a flat surface using the provided mounting bracket.
2. Environment: Ensure that the SDC20 is installed in a well-ventilated area, away from direct sunlight and moisture.
3. Power Supply: Connect the SDC20 to a 24VDC power supply.

4. Wiring

1. Power Supply Wiring: Connect the power supply to the SDC20's power terminals.
2. Input/Output Wiring: Connect the analog input, digital input/output, and relay output according to the wiring diagram provided in the manual.

5. Configuration

1. Parameter Setting: Set the parameters using the SDC20's front panel or through the RS-485 communication interface.
2. Control Mode: Select the control mode (e.g., PID, ON/OFF) according to the application requirements.

6. Operation

1. Power ON/OFF: Turn the power ON/OFF using the power switch or the external power supply.
2. Monitoring: Monitor the process variables and control output on the LCD display.
3. Alarm: Check the alarm messages and take corrective actions if necessary.

7. Maintenance

1. Cleaning: Clean the SDC20 regularly to prevent dust and debris accumulation.
2. Firmware Update: Update the firmware periodically to ensure optimal performance.

8. Troubleshooting

1. Error Messages: Check the error messages on the LCD display and refer to the troubleshooting guide in the manual.
2. Faulty Output: Check the output wiring and configuration if the output is not functioning correctly.

9. Specifications

• Power Supply: 24VDC
• Input: Analog input (1), digital input (4)
• Output: Relay output (1)
• Communication: RS-485
• Operating Temperature: 0°C to 50°C
• Storage Temperature: -20°C to 60°C

By following the guidelines and instructions provided in this user manual, users can ensure safe and effective operation of the Yamatake SDC20 digital controller. If you have any further questions or need clarification on any of the procedures, please don't hesitate to ask.

Title: Comprehensive but dense – essential for setup, not for beginners Rating: ★★★★☆ (4/5)

Review: The Yamatake SDC20 is a powerful digital temperature controller, and this official user manual covers just about everything you need to know. It’s well-organized into sections for installation, wiring, parameter settings, and auto-tuning.

Pros:

• Thorough: Details every single parameter (PID, alarms, input types, etc.) clearly.
• Diagrams: Wiring diagrams and terminal layouts are accurate and easy to follow.
• Troubleshooting: Includes a solid error code list and possible causes.

Cons:

• Dense language: It reads like a technical translation—some sentence structures feel awkward. You may need to read passages multiple times.
• No quick-start guide: For new users, jumping straight into the manual can be overwhelming. An abbreviated "basic setup" section would help.
• Index could be better: Finding specific parameters sometimes requires flipping through several pages.

Verdict: If you already understand basic PID control, this manual is a reliable reference. If you’re a complete beginner, pair it with online tutorials or examples. Four stars because it’s complete but not very user-friendly.

Adjusting Sensitivity

1. Locate the sensitivity adjustment potentiometer.
2. Adjust the potentiometer to the desired sensitivity level.

7. Maintenance and Troubleshooting

Chapter 3: Setting Up Input Type and Range

This is the most dangerous chapter to ignore. The SDC20 must know what sensor is attached.

• Input 1 (Main PV): Use the manual’s table to set SL1. For example:
  • 0 = K-type thermocouple (-200 to 1370°C)
  • 1 = J-type thermocouple
  • 8 = Pt100 RTD (-199.9 to 850.0°C)
• Scaling (DC Input): If you use a 4-20 mA pressure transmitter, the manual explains how to set low (4mA = 0 PSI) and high (20mA = 500 PSI) scaling values.

Quick setup (assume standard panel-mount SDC20)

1. Mount the controller in a standard panel cutout and secure with the clamp.
2. Power: connect appropriate supply voltage per your model (commonly 100–240 VAC or 24 VAC/DC variants). Observe polarity where applicable.
3. Sensor: connect thermocouple or RTD wires to the sensor input terminals. Match the sensor type in settings (see “Configuring inputs”).
4. Output: wire the heater control to the relay or SSR driver terminal. If using SSR, wire the SSR drive output to the SSR input; for relay, wire heater load through relay contacts.
5. Alarms: connect alarm output contacts or terminals as needed.
6. Ground: connect earth/ground for safety where provided.

Alarms and safety

• Enable high/low alarms with appropriate hysteresis to avoid chattering.
• Use independent safety controllers or hardware high-limit cutouts for critical processes — do not rely solely on the controller for life-safety or critical over-temperature protection.
• Regularly verify sensor calibration and alarm operation.

Where to Download the Yamatake SDC20 User Manual (PDF)

Since Yamatake rebranded to Azbil in 2008, searching for the manual requires using both names. Here are the safest sources:

1. Azbil Corporation’s Official Website – Navigate to the "Technical Library" or "Product Support" section. Search for model number: SDC20 or SDC20 (Yamatake). This is the only source for guaranteed virus-free, complete revisions.
2. Industrial Parts Distributors – Sites like Radwell, Valin, or PLC Center often host archived PDFs of discontinued manuals.
3. Direct Part Number Search – Look for document number: CP-UM-5156E (a common revision for the SDC20).

Warning: Avoid "free manual" websites that require credit card info. The SDC20 manual is legally available for free as a legacy support document.

Final notes

Always consult the official Yamatake SDC20 user manual for exact wiring diagrams, terminal labeling, model-specific options, and safety instructions before installation or service. Use proper personal protective equipment and follow local electrical codes.

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Yamatake SDC20 User Manual: A Comprehensive Guide to Setup and Operation

The Yamatake SDC20 (now part of the Azbil lineup) is a versatile, single-loop digital indicating controller designed for precise temperature and process control. Known for its compact 48 x 48 mm size and high reliability, it is a staple in industrial environments ranging from food processing to heat treating. yamatake sdc20 user manual

This guide provides an overview of the SDC20’s features, wiring, and configuration to help you get the most out of your device. 1. Overview of the SDC20 Controller

The SDC20 series is engineered for ease of use without sacrificing advanced functionality. Its primary features include:

Multi-Input Support: Accepts thermocouples, RTDs (Pt100), and DC voltage/current.

PID Control with Auto-Tuning: Ensures stable control even in complex thermal systems. Compact Design: Fits into standard DIN 1/16 panel cutouts.

Visible Display: High-brightness LED display for Process Value (PV) and Set Value (SV). 2. Key Specifications

Before installation, verify your specific model number (e.g., C200DA). Standard specs include: Accuracy: ±0.5% FS. Sampling Cycle: 500ms.

Control Outputs: Relay, Voltage Pulse (for SSR), or Current.

Power Supply: Typically 100 to 240 Vac or 24 Vdc (model dependent). 3. Wiring and Installation

Proper wiring is critical for safety and performance. Always refer to the diagram printed on the side of your specific unit. Power Supply

Connect the power leads to the designated terminals (usually 1 and 2). Ensure the voltage matches the label on the controller. Input Connections

Thermocouple: Connect the positive and negative leads, ensuring correct polarity.

RTD (Pt100): Connect the three wires (A, B, B') to the corresponding terminals to compensate for lead wire resistance. Control Output

Relay Output: Connect the load in series with the relay contacts.

SSR Drive: Connect the voltage pulse output directly to the input of your Solid State Relay. 4. Initial Configuration (Setup Mode) Introduction The Yamatake SDC20 is a digital controller

To access the setup menu, you typically press and hold the [MODE] key for several seconds. Essential parameters to configure include:

Input Type (C01): Select the code corresponding to your sensor (e.g., K-type thermocouple or Pt100).

Temperature Unit (C02): Choose between Celsius (°C) and Fahrenheit (°F).

Control Action (C06): Set to "Direct" for cooling or "Reverse" for heating.

Scaling: Set the Upper and Lower display limits to match your process requirements. 5. Operating the SDC20 Once configured, daily operation is straightforward:

Changing the Set Value (SV): Use the arrow keys to adjust the target temperature.

Auto-Tuning (AT): If the system is oscillating or slow to reach the target, initiate the AT function. The controller will "learn" the thermal characteristics of your system and calculate the ideal PID constants.

Alarm Settings: Configure high or low alarms to protect your equipment from overheating or freezing. 6. Troubleshooting Common Issues

"E01" or "AL01" Error: Usually indicates an input sensor error (broken wire or incorrect polarity).

Unstable Temperature: If the PV jumps around, check for electrical noise near the sensor wires or re-run the Auto-Tuning.

No Output: Ensure the "Run/Stop" parameter is set to "Run" and check the output fuse. Conclusion

The Yamatake (Azbil) SDC20 is a robust tool for industrial precision. While this guide covers the essentials, always keep a physical copy of the Yamatake SDC20 User Manual nearby for detailed parameter tables and safety warnings specific to your firmware version.

7. Troubleshooting & Error Codes

A dedicated section lists all error messages with explanations and remedies:

| Error Code | Meaning | Corrective Action | |------------|---------|--------------------| | S.ERR | Input sensor break or incorrect type | Check wiring / sensor type | | UUUU | Over-range (high) | Verify input signal / range | | LLLL | Under-range (low) | Verify input signal / range | | LOCK | Parameter lock enabled | Enter correct unlock code | Safety Precautions Overview of the SDC20 Installation Wiring

Other issues covered: output not responding, unstable PV, and communication timeouts.