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YS170-012 Yokogawa Single Loop Programmable Controller

YS170-012 Yokogawa Single Loop Programmable Controller

Availability: 20 left in stock

Yokogawa YS170-012 Single Loop Controller The Yokogawa YS170-012, also cataloged as the YS170 Manual/Auto Station Controller, operates as a dedicated...

SKU: YS170-012

Manufacturer: Yokogawa
Product No.: YS170-012
Product Type: Programmable Controllers
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 1000g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa YS170-012 Single Loop Controller

The Yokogawa YS170-012, also cataloged as the YS170 Manual/Auto Station Controller, operates as a dedicated hardware component for process variable regulation and manual-to-automatic transfer execution within panel-mounted loop control systems. It processes 4-20 mA DC analog input signals, executing low-latency calculations to adjust output loops while preventing output surges during operating mode switching.

Suffix Breakdown & Model Matrix

The catalog options for the Yokogawa YS170 controller series configure physical electrical interfaces and power supply ratings:

YS170: Designates the core single-loop programmable indicating controller base model.
-0: Specifies standard hardware options and housing configuration.
1: Internal manufacturing revision code (fixed position).
2: Selects the 220 VAC power supply operational rating (100-240 VAC range supported).
A31: Optional suffix indicating integrated RS-485 communication module interfaces.

Hardware Specifications

Parameter	Specification
Model	YS170-012
Brand	Yokogawa
Origin	Japan
Weight	1.0 kg
Dimensions	96 mm x 96 mm x 150 mm
Operating Temp	0 to +50 deg C
Power Consumption	15 VA (at 100-240 VAC)
Input Signal	4-20 mA DC (Process Variable)
Output Signal	4-20 mA DC (Setpoint / Manipulated Variable)
Display	4-digit dual LED display for PV and SP
Control Accuracy	+/-0.1% of span
Isolation	Galvanic isolation between input, output, and power
Mounting	Panel mount (standard DIN cutout)

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

The module incorporates analog isolation pathways capable of routing process signals to DCS nodes while preserving 4-20 mA HART loop protocol integrity across field instrument channels. Internal channel-to-channel isolation barriers eliminate potential ground loops between the field-side transmitter input loop and the controller output driver circuitry. High-voltage galvanic isolation protects internal digital processing components from common-mode voltage spikes and transient electrical noise, ensuring precise signal scaling and cold junction compensation stability across industrial operating ranges.

Frequently Asked Questions

Q: How does the bumpless transfer feature function during manual-to-automatic mode changes on the YS170-012?

A: The internal tracking circuit continuously aligns the automatic setpoint or output calculation with the active manual control value, eliminating output step jumps when switching operational modes.

Q: What mounting preparations are necessary for installing the YS170-012 into an instrument cabinet panel?

A: The controller requires a standard 96 mm x 96 mm DIN panel cutout. Slide the unit through the front cutout and secure the mounting brackets against the panel wall to ensure structural stability and gasket compression.

Q: Are the analog inputs and outputs of the YS170-012 isolated from the main AC line power supply?

A: Yes. The unit incorporates complete three-way galvanic isolation, insulating the 4-20 mA input loop, 4-20 mA output loop, and 100-240 VAC mains power circuit from one another.

Field Installation Guidelines

Prepare a clean DIN-standard panel cutout measuring 96 mm by 96 mm, ensuring sufficient clearance behind the cutout for wiring harness depth. Insert the YS170-012 unit through the front of the panel cutout and tighten the top and bottom mounting clamps against the panel subplate. Route all 4-20 mA input and output signal wiring using twisted-shielded pair conductors, maintaining physical segregation from high-voltage AC mains power lines and motor leads. Connect all cable shields to a single instrument earth ground point to minimize external noise pickup. Verify that all terminal screws are torqued down securely before applying 100-240 VAC line power to the power input terminals.

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