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InquiryYokogawa YS170-011 Single-loop Programmable Controller
The Yokogawa YS170-011, also cataloged as the YS170 single-loop programmable controller, operates as a panel-mounted process control unit for PID, cascade, and feed-forward regulation within Yokogawa YS100 Series systems.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | YS170-011 |
| Brand | Yokogawa |
| Origin | YS100 Series, Style 3/4 |
| Weight | ~3.92 lbs (1.78 kg) |
| Dimensions | DIN-standard flush panel mount |
| Operating Temp | 0 to +50 deg C |
| Power Supply | 24–120 VDC or 100–120 VAC (50/60 Hz) |
| Control Type | Single-loop programmable controller |
| Control Algorithms | PID, cascade, feed-forward, ratio, STC self-tuning |
| I/O Capability | Configurable AI, DI, DO |
| Display Type | VFD or LED bar |
| Programming Interface | Front-panel or RS-232C via YSS20 |
| Fail-Safe Protection | Hard manual operation wheel |
Channel-to-Channel Isolation
The YS170-011 employs channel-to-channel isolation across its analog and digital I/O paths, ensuring deterministic signal acquisition and actuation. This design minimizes interference between control loops, allowing PID and cascade functions to operate without cross-coupling errors. Isolation also enhances system resilience when interfacing with external sensors and actuators in distributed control environments.
Frequently Asked Questions
Q: Can the YS170-011 retain configuration after power loss? A: Yes, parameters are stored in non-volatile memory, eliminating the need for backup batteries.
Q: How is manual control achieved during CPU halt? A: The built-in hard manual operation wheel allows operators to maintain loop control independently of CPU execution.
Q: Is RS-232C programming still supported? A: Yes, legacy YSS20 software provides configuration via RS-232C, in addition to front-panel programming.
Field Installation Guidelines
- Mount controller in DIN-standard flush panel cutouts; ensure gasket sealing.
- Segregate analog signal wiring from digital outputs to reduce interference.
- Provide stable power supply within specified ranges (24–120 VDC or 100–120 VAC).
- Verify grounding continuity for shielding layers to minimize EMI.
- Confirm ambient temperature remains within 0 to +50 deg C for reliable operation.
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