YS150-012/A31 S3 Yokogawa YS100 Datasheet & Technical Manual

Yokogawa YS150-012/A31 S3 YS150 Single-Loop Controllers

Yokogawa YS150-012/A31 S3 YS150 Single-Loop Controllers

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Yokogawa YS150-012/A31 S3 YS100 Series Single-Loop Controller The Yokogawa YS150-012/A31 S3, also cataloged as the YS150 Single-Loop Programmable Controller, operates...

SKU: YS150-012/A31 S3

Manufacturer: Yokogawa
Product No.: YS150-012/A31 S3
Product Type: Single-Loop Controllers
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 1200g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa YS150-012/A31 S3 YS100 Series Single-Loop Controller

The Yokogawa YS150-012/A31 S3, also cataloged as the YS150 Single-Loop Programmable Controller, operates as a dedicated hardware component for precise closed-loop PID control execution within YS100 series architectures.

Suffix Breakdown & Model Matrix

The suffix alphanumeric codes specify hardware options and firmware build levels:

YS150: Base series model designating the single-loop programmable process controller.
-012: Internal power supply and basic hardware feature variant.
/A31: Option code denoting specific analog/digital interface configuration and terminal assignment.
S3: System firmware revision level.

Hardware Specifications

Parameter	Specification
Model	YS150-012/A31 S3
Brand	Yokogawa
Origin	Japan
Weight	1.2 kg to 1.5 kg
Dimensions	96 x 96 x 150 mm (or 144 x 144 x 150 mm DIN panel footprint)
Operating Temp	0 deg C to +50 deg C
Storage Temp	-20 deg C to +70 deg C
Power Consumption	20 VA
Control Loops	1 loop (single-loop controller)
Sampling Period	100 ms
Control Algorithm	PID with auto-tuning, manual tuning, and fuzzy logic overshoot suppression
Input Types	Universal: Thermocouple, RTD, DC voltage (1-5 V), DC current (4-20 mA)
Input Accuracy	+/-0.1% of span
Analog Outputs	1 channel; 4-20 mA DC or 1-5 V
Digital I/O	4 digital input points, 2 digital relay output points
Communication	RS-485 interface supporting Modbus RTU protocol
Power Supply	100-240 VAC (50/60 Hz)
Mounting	Panel mount

Channel Isolation and Process Interface Integrity

The controller incorporates hardware signal isolation between input, output, and power supply terminals to prevent ground loops and protect against high-voltage field line transients. The analog front-end processes inputs with a 100 ms sampling period, executing digital filtering and cold junction compensation (CJC) for connected thermocouple sensors. Operating over a 4-20 mA HART or standard analog loop topology, the internal output converter translates real-time PID algorithm calculations into continuous control signals with 0.1% span accuracy.

Frequently Asked Questions

Q: What communication protocols does the YS150-012/A31 S3 support for DCS integration? A: The onboard RS-485 serial port supports the Modbus RTU protocol, enabling bidirectional communication with master PLCs or DCS host platforms.

Q: How does the unit process cold junction compensation during thermocouple operation? A: Internal CJC circuits measure local terminal temperature directly, adjusting raw millivolt thermocouple signals before PID processing to maintain input conversion accuracy of +/-0.1% of span.

Q: What input signals can connect directly to the universal input terminals? A: The universal input accepts thermocouples, RTDs, 1-5 V DC voltage, and 4-20 mA DC current signals without requiring external signal conversion cards.

Field Installation Guidelines

Prepare a square panel cutout corresponding to the DIN standard dimensions and slide the controller unit through the front cutout. Fasten the panel-mount retaining brackets from the rear, tightening mounting screws evenly to form a secure seal against the panel face. Route 100-240 VAC power cables separately from low-level analog input wiring to suppress electro-magnetic induction. Connect thermocouple or 4-20 mA shielded cabling to the rear screw terminals, bonding the cable shield to the central enclosure earth ground at a single end. Ensure that external conduit fittings maintain a minimum engagement of 5 full NPT threads where rigid metal conduits connect to field enclosures.

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