Yokogawa YS150-012 Single Loop Multi-function Controller

Yokogawa YS150-012 Single Loop Multi-function Controller

The Yokogawa YS150-012, also cataloged as the YS150 single-loop multi-function controller, serves as a compact PID-based control unit with selectable modes and integrated LED/bar graph display for process automation environments.

Hardware Specifications

Channel-to-Channel Isolation

The YS150-012 supports analog input/output isolation across its configurable channels. Inputs include 1 channel for 1–5 VDC, 4–20 mA DC, thermocouples, or RTD probes. Outputs provide 4–20 mA or 1–5 VDC signals. Four digital inputs enable remote logic control, while two relay-based digital outputs provide deterministic switching. Isolation ensures stable PID loop execution without interference between analog and digital paths.

Frequently Asked Questions

Q: Can the YS150-012 operate in cascade mode? A: Yes, it supports user-selectable cascade control, allowing secondary loop regulation based on primary loop feedback.

Q: Does the controller retain configuration after power loss? A: Yes, non-volatile memory stores parameters without requiring backup batteries or capacitors.

Q: What is the typical response time for digital outputs? A: Digital relay outputs operate within standard mechanical relay switching times; analog loop sampling is processed at 100 ms intervals.

Field Installation Guidelines

• Mount the controller in a 144 × 144 mm panel cutout with adequate rear clearance.
• Ensure IP54 protection by securing the faceplate gasket during installation.
• Segregate analog signal wiring from relay outputs to minimize interference.
• Provide stable 100–240 VAC supply with proper grounding.
• Verify thermocouple/RTD wiring polarity before energizing to avoid input errors.
• Maintain ambient temperature within 0 to +50 deg C for reliable operation.