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- Yokogawa
- YS1700 S2
- Programmable Indicator Controller
- Japan
- 250 x 144 x 72 mm
- 1.6 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Yokogawa YS1700 S2 is a single-loop programmable indicating controller designed for industrial process control applications.
It belongs to the YS1000 series, and is widely used in temperature, pressure, flow, and level control loops in automation systems.
The controller integrates display, PID control, logic functions, and signal processing into a compact panel-mounted unit.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Yokogawa |
| Model | YS1700 S2 |
| Product Type | Programmable Indicator Controller |
| Series | YS1000 Series |
| Control Type | Single-loop PID controller |
| Function | Process control + indication + logic programming |
| Inputs | Analog + digital (configurable) |
| Outputs | Analog + digital (configurable) |
| Communication | Optional (Ethernet / RS485 / DCS link depending configuration) |
Physical Specifications
| Parameter | Details |
|---|---|
| Dimensions | 250 × 144 × 72 mm |
| Weight | 1.6 kg |
Function and Working Principle
The YS1700 S2 operates as a microprocessor-based loop controller combining measurement, control, and display functions.
Core Working Principle
- Receives process signals from field instruments (e.g., 4–20 mA)
- Executes PID or logic-based control algorithms
- Compares PV (Process Variable) with SV (Setpoint)
- Calculates control output (MV)
- Sends output signal to final control element (valves, drives, etc.)
- Displays real-time process status on front panel
It can also run user-defined programs using function blocks or text-based logic.
Key Functions
- Single-loop PID control
- Process variable indication (PV, SV, MV)
- Function block programming capability
- Logic and sequence control
- Alarm monitoring and event handling
- Manual/automatic control switching
- Data calculation and signal conditioning
System Role
In an industrial control loop:
- Sensor measures process variable
- Signal is sent to YS1700 S2
- Controller compares PV with setpoint
- PID algorithm calculates output
- Output is sent to actuator (valve, VFD, etc.)
- Process is continuously corrected
Advanced Control Features
1. PID Control
- Standard proportional, integral, derivative control
- Stable process regulation
2. Function Block Programming
- Modular control logic design
- Reusable control functions
3. Self-Tuning
- Automatic parameter optimization
- Improves control stability
4. Setpoint Filtering
- Smooth response to setpoint changes
- Reduces process overshoot
Industrial Applications
The YS1700 S2 is widely used in:
- Boiler control systems
- Chemical dosing systems
- Compressor control (anti-surge systems)
- Furnace temperature control
- Flow and pressure regulation systems
- Power plant auxiliary systems
- Water treatment process control
Key Features
- Compact panel-mounted design
- High reliability industrial controller
- Multi-function control capability
- Flexible I/O configuration
- Advanced PID and logic control
- Suitable for standalone or DCS integration
Advantages
- Combines controller + indicator in one unit
- Reduces need for separate PLC logic in small loops
- High stability for continuous process control
- Easy operation via front panel interface
- Flexible programming options
Installation Notes
- Panel-mounted installation
- Requires proper electrical grounding
- Analog inputs typically 4–20 mA or voltage signals
- Output wiring to actuators or control devices
- Optional communication setup for system integration
FAQ
Q: What is YS1700 S2 used for?
It is used for single-loop industrial process control (PID control).
Q: Is it a PLC?
No, it is a dedicated loop controller with programmable functions.
Q: Can it be used standalone?
Yes, it can operate independently without a PLC or DCS.
Q: What industries use it?
Chemical, power, oil & gas, water treatment, and manufacturing.
Conclusion
The Yokogawa YS1700 S2 Programmable Indicator Controller is a reliable single-loop control device designed for precise industrial process regulation.
It integrates control, display, and logic functions into a compact unit, making it suitable for a wide range of automation applications.