Yamatake Sdc20 User Manual Direct

The Yamatake (Azbil) SDC20 is a compact digital indicating controller designed for precise process control in general machinery and industrial applications. This guide summarizes the core operational and technical details found in the official user manual. 1. Key Specifications and Operating Conditions

Power Supply: Supports 100 to 240 V AC (operating range: 85 to 264 V AC) at 50/60 Hz.

Operating Environment: Designed for indoor use in temperatures ranging from 0 to 50°C and humidity between 10 to 90% RH (non-condensing).

Mounting: Must be panel-mounted to restrict operator access to the rear terminals for safety. 2. Front Panel and Controls

The interface consists of high-visibility indicators and dedicated keys for manual adjustments:

No. 1 Indicator: Displays the PV (Process Variable) or parameter names.

No. 2 Indicator: Displays the SP (Set Point) or parameter values.

Status LEDs: Include EV1 to EV3 for event outputs, OT for control output status, and AT which flashes during auto-tuning.

Navigation Keys: Use the PARA key to cycle through modes, and UP/DOWN keys to adjust values. Press ENT to confirm changes. 3. Wiring and Installation yamatake sdc20 user manual

Proper installation is critical to prevent electric shock or fire:

Power Isolation: Always turn the main power OFF before connecting or disconnecting any wires.

Grounding: The ground terminal must be connected before any other wiring and disconnected last.

Fuse Requirement: Main supply wiring requires a (T) 0.2 A, 250 V fuse (or 0.5 A for specific AC models).

Input Types: The SDC20 supports multi-range inputs including thermocouples, RTDs, and DC voltage/current. 4. Programming and Setup Mode

Accessing deeper configuration settings requires a timed key sequence:

Enter Parameter Mode: From the basic display, press and hold PARA for 3 seconds.

Enter Setup Mode: Once in parameter mode, press and hold PARA for another 3 seconds. The Yamatake (Azbil) SDC20 is a compact digital

Adjust Values: Use UP/DOWN keys. The value will blink while being edited and stop blinking after 2 seconds to indicate it is fixed.

Exit: Press and hold PARA for 3 seconds to return to the basic display. 5. Communication and Software

supports serial communication via RS-485 or RS-232C interfaces. SDC20/21 User Manual Overview | PDF | Power Supply - Scribd

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. Title: Comprehensive but dense – essential for setup,

Table of Contents

1. Why the Yamatake SDC20 User Manual is Indispensable
2. Where to Download the Official SDC20 User Manual (PDF)
3. Understanding the Manual’s Structure: A Quick Navigation Guide
4. Hardware Installation & Wiring (Chapters 2-3 of the Manual)
5. Front Panel Layout: Keys, Displays, and LED Indicators
6. Step-by-Step Programming Guide (Using the Operation Flowchart)
7. Parameter Groups Explained: Setup, PID, and Alarm Menus
8. Auto-Tuning (AT) and PID Control Settings
9. Troubleshooting Common Errors via the Manual’s Error Code Table
10. Maintenance, Calibration, and Factory Reset Procedures
11. Frequently Asked Questions (FAQ) from the Manual
12. Conclusion & Safety Warnings

5. Advanced Features Explained

• Auto-Tuning (AT): Step-by-step procedure to automatically calculate PID values.
• Self-Tuning: How the controller continuously optimizes PID during operation.
• Multi-PID Groups: Setting up 4 sets of PID parameters for different operating zones.
• Heater Break Alarm (HBA): Wiring and configuration of CT (current transformer) input.

9. Troubleshooting Common Errors via the Manual’s Error Code Table

Every service engineer memorizes the error code page. Here are the most critical ones from the official manual:

| Display | Meaning | Solution (from manual) | | :--- | :--- | :--- | | S.ERR | Input sensor break (thermocouple or RTD open) | Check wiring continuity; replace sensor. | | L.ERR | Input under-range (lower than sensor limit) | Verify sensor type configuration (InP). | | H.ERR | Input over-range | Check for short circuit or wrong sensor. | | E.SEr | A/D converter error, serious hardware fault | Power cycle. If persistent, return for repair. | | LoOp | Loop break alarm (no PV change despite output) | Check heater, contactor, or actuator. |

Always refer to the "Troubleshooting by Symptom" table in Chapter 8 of the SDC20 manual before replacing the controller.

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.

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 |

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

Powering On/Off

1. Turn the power switch to the "ON" position to power on the product.
2. Turn the power switch to the "OFF" position to power off the product.

7. Parameter Groups Explained: Setup, PID, and Alarm Menus

The manual organizes hundreds of parameters into hierarchies. Understanding the groups saves hours of frustration:

• CnFL (Configuration Level): Sets input type (InP: K, J, Pt100, 4-20 mA), scaling (SCL), output type (oH, oC), and control action (reverse/direct).
• P-n (PID Group): Proportional band (P), Integral time (I), Derivative time (D), Manual reset, ARW (anti-reset windup).
• A-n (Alarm Group): Sets alarm modes (ALM1: deviation high/low, absolute), alarm setpoints, and hysteresis.
• EV-n (Event Group): Maps physical output terminals (DO1, DO2) to alarm numbers or loop break alarm.
• C-M (Communication Group): Only if equipped with optional RS-485. Sets address, baud rate (9600, 19200), data format.

Manual’s Golden Table: See Table 4.2 "Parameter List" – it lists every code with its factory default and value range.