YS170-012 S3 Yokogawa YS100 Series Datasheet & Manual

Programmable Loop Controller | Yokogawa YS170-012 S3 YS100

Programmable Loop Controller | Yokogawa YS170-012 S3 YS100

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Yokogawa YS170-012 S3 Single-Loop Controller The Yokogawa YS170-012 S3, also cataloged as the YS170 Programmable Controller Module, operates as a...

SKU: YS170-012 S3

Manufacturer: Yokogawa
Product No.: YS170-012 S3
Product Type: Programmable Logic Controllers
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 1600g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa YS170-012 S3 Single-Loop Controller

The Yokogawa YS170-012 S3, also cataloged as the YS170 Programmable Controller Module, operates as a dedicated hardware component for localized PID loop execution and sequencing control within process automation and distributed control network architectures. The unit accepts analog and discrete signals directly from field transmitters, processing feedback loops autonomously to regulate final control elements. Designed for panel mounting, the internal microprocessor handles arithmetic logic, cascade control structures, and high-precision signal processing independently from host SCADA networks.

Suffix Breakdown & Model Matrix

Suffix Code	Specification	Functional Description
YS170	Base Model	Single-Loop Programmable Controller
-012	Configuration Variant	Specific I/O allocation and software execution options
S3	Style Revision	Style S3 hardware design and motherboard revision

Hardware Specifications

Parameter	Specification
Model	YS170-012 S3
Brand	Yokogawa
Origin	Japan
Weight	1.6 kg net (2.2 kg shipping weight)
Dimensions	70 mm W x 145 mm H x 293 mm D
Operating Temp	0 to +50 deg C
Power Consumption	100-120 VAC (50/60 Hz) / 24-120 VDC
Control Loops	Single-loop PID, ratio, cascade, and feedforward control
Signal Processing	Configurable analog I/O and discrete I/O channels
Communication Interface	Optional RS-485 Modbus serial communication interface
Mounting Profile	Panel mount cutout / rack frame mounting

4-20 mA HART Loop Protocol & Channel-to-Channel Isolation Integration

The YS170-012 S3 controller incorporates galvanically isolated input and output stages to preserve signal integrity across noisy industrial environments. Internal channel-to-channel isolation prevents ground loop formation when interfacing with 4-20 mA HART loop protocol transmitters and analog positioning devices. Dedicated cold junction compensation (CJC) algorithms run internally to linearize temperature sensor inputs, ensuring accurate loop processing without introducing high-frequency electrical noise or offset drift back into the main DCS network backplane.

Frequently Asked Questions

Q: How does the YS170-012 S3 maintain loop execution during a central DCS communication failure?

A: The controller runs its firmware logic, PID calculations, and output switching locally. If RS-485 network communication drops, the module automatically continues executing its assigned single-loop control routine without output freezing or dropping to fail-safe zero unless pre-programmed to do so.

Q: Can the internal control strategy and parameter setpoints be modified without physical wiring changes?

A: Yes. All internal block configurations, loop algorithms, and I/O assignments are modified via software through the front programming port or over the optional Modbus RS-485 interface without removing terminal wiring.

Q: What power source is required to operate the YS170-012 S3 module?

A: The module operates on dual-range power inputs supporting 100-120 VAC at 50/60 Hz or 24-120 VDC auxiliary supply lines.

Field Installation Guidelines

Panel Cutout Grounding: Ensure the metal panel frame surrounding the cutout makes a clean, unpainted conductive connection to functional earth (FE) to drain electrostatic build-up.
Analog Signal Routing: Route 4-20 mA analog input and output cables in dedicated instrument trays separate from high-voltage AC power wiring by at least 200 mm.
Shield Termination: Connect cable shields for analog I/O at a single grounding point near the controller chassis to eliminate field ground loops.
Terminal Wiring Tension: Tighten terminal screw connections to the manufacturer recommended torque limits prior to applying 100-120 VAC line power.

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