Yokogawa YS1700-101/A34 Programmable Indicating Controller

Product Overview

The Yokogawa YS1700-101/A34 is a programmable indicating controller engineered for stable temperature and process regulation. It belongs to the proven YS1700 series, widely adopted across process industries requiring dependable standalone control solutions. Moreover, the controller combines precise measurement, flexible control logic, and a compact mechanical design for panel installations. Therefore, engineers can modernize control panels without modifying existing cutouts or cabinet layouts.

Functional Highlights

The YS1700-101/A34 delivers accurate single-loop control for temperature, pressure, flow, and general process variables. In addition, its user-programmable logic allows customized control strategies tailored to specific operating requirements. The digital indicating display provides clear process visibility, improving daily operation and troubleshooting efficiency. For instance, operators can quickly adjust parameters through an intuitive front-panel interface without external tools.

Technical Specifications

Model: YS1700-101/A34 Controller Type: Programmable indicating controller

Input Accuracy:

• 1 to 5 V inputs: ±0.1% of span
• Direct inputs: ±0.5% or ±(2 × direct input card accuracy + 0.1%)

Output Accuracy:

• Analog voltage output (main unit): ±0.1% of span
• Analog voltage output (expandable I/O): ±0.2% of span
• Analog current output: ±0.2% of span

Allowable Input Voltage:

• 1 to 5 V DC
• mV or thermocouple direct input
• Two-wire transmitter: ±30 V DC
• –0.5 to 4 V DC
• +40 mA DC

Warm-Up Time:

• 1 minute for standard inputs
• 3 minutes for direct inputs

Typical Applications

The YS1700-101/A34 is commonly applied in chemical plants, refineries, power generation units, and manufacturing lines. Moreover, it performs effectively as a standalone controller or as part of a distributed control architecture. Therefore, it suits modernization projects where reliability and long-term component availability are critical.

Reliability & Service

Yokogawa designs the YS1700 series for continuous industrial operation under demanding environmental conditions. In addition, the controller benefits from Yokogawa’s long product lifecycle support and global service network. Therefore, maintenance teams can rely on consistent performance, documentation availability, and spare part continuity.

FAQ

Q1: What process variables can the YS1700-101/A34 control? A1: It controls temperature, pressure, flow, and general analog process variables using configurable input types.

Q2: Can this controller replace older Yokogawa panel controllers? A2: Yes, it fits standard Yokogawa panel cutouts, enabling direct replacement without mechanical modifications.

Q3: Is the YS1700-101/A34 suitable for hazardous environments? A3: Yes, it carries FM non-incendive certification and complies with CE safety requirements.

Q4: Does the controller support custom control logic? A4: Yes, user-programmable functions allow engineers to implement customized control strategies easily.