The YS1700-001/S01 is a high-performance programmable indicating controller from Yokogawa. It provides precise, stable control for complex industrial processes. Users can program it using either text-based logic or function block diagrams. Its robust hardware includes a dual-CPU architecture for high reliability. The compact design and versatile I/O make it ideal for panel-mounted control in demanding environments.

​Technical Specifications

Model: YS1700-001/S01

Type: Programmable Indicating Controller

Display

• Full-dot color LCD (120 x 320 pixels)
• Semi-reflective, adjustable backlight
• High visibility even in direct sunlight

Programming

• Text-based: Up to 1000 steps
• Function block: Up to 400 modules

Control Modes

• Single-loop
• Cascade
• Selector
• Programmable mode (custom logic)

Control Functions

• Standard and nonlinear PID control
• Reset bias and output limiters
• Alarm detection
• Self-tuning (STC)

Analog Inputs

• 8 channels (expandable)
• Supports 1–5 V, mV, RTD, thermocouple, potentiometer

Analog Outputs

• 4 channels (expandable)
• 1–5 V, 4–20 mA

Digital I/O

• 14 configurable channels (DI or DO)
• 1 fail contact output

Power Supply

• AC 100 V or DC 24 V standard
• Optional AC 220 V
• Polarity-free DC input
• Wide voltage tolerance

Communication

• Ethernet: Modbus/TCP
• RS-485: Modbus, PC Link, YS Protocol, Peer-to-Peer

Protection & Safety

• Dual CPUs: main and display
• Manual override and hardware fail-safe
• Front panel protection: IP54
• Certifications: CE, FM, CSA (optional)

Environmental Ratings

• Operating temperature: 5°C to 40°C
• Ambient temperature: -10°C to +55°C

Memory

• Nonvolatile storage (no battery or capacitor needed)

Accuracy

• Voltage input/output: ±0.1%
• Current output: ±0.2%
• I/O resolution: 1/10,000
• Internal computation resolution: 1/65,536

Dimensions & Weight

• Size: 14.4 × 7.2 × 25 cm (H × W × D)
• Weight: 1.2 kg