Yokogawa YS1700 Single Loop Controller

Feature & Principle

It is a panel-mounted programmable single-loop controller of Yokogawa YS1000 series. It receives analog signals from field transmitters and executes dual PID closed-loop regulation. It supports function block programming and text programming, compatible with legacy YS170 programs. It is equipped with hard manual backup function to keep valve output stable when host system fails. RS485 Modbus interface supports data exchange with PLC, HMI and CENTUM DCS. Expandable I/O version can add extra analog and discrete points. It supports peer-to-peer intercommunication between multiple YS1700 units.

Specifications

Model: YS1700 Brand: Yokogawa Display: Color dot matrix LCD Control: Dual PID, auto-tuning Programming: Text programming, function block programming Communication: RS485, Modbus RTU Power supply: 100-240VAC or 24VDC optional Signal: 4-20mA analog input and output, relay alarm contact Mounting: Panel cutout mount Expansion: Optional expandable I/O module Application: Power boiler, petrochemical, chemical, water treatment process control Certification: CE, FM non-incendive optional

Components & Diagnostics

Main control board, color LCD module, analog signal conditioning circuit, manual backup circuit, front keypad, status LED, communication transceiver. Common faults: backlight failure, output drift, communication offline, calibration deviation, power supply damage.

Product Brief

YS1700 single loop controller, Yokogawa programmable PID control spare widely used for boiler and process control cabinet overhaul and replacement.