The 4170+ single loop controller is part of the Plus series range and has 3-point stepping control designed specifically for open loop, valve motor drive (VMD) applications.
Incorporates advanced tuning algorithms, with selectable pre-tune and self-tuning. Pre-tune is used on start-up and is a one step tuning algorithm designed to get you to setpoint fast with self-tuning being enabled near setpoint and normal operating conditions to control overshoot.
Universal Input for Thermocouple, RTD, DC, linear mA/V/mV, user selectable.
Four Outputs; relay, DC linear, SSR driver, Triac, Transmitter Power Supply
- 3-Point Stepping valve control
- Valve position indication
- Auto or Manual Tuning
- Process and loop alarms
- Remote/dual setpoint options
- Modbus communications
From West Instruments
West Control Solutions
1675 Delany Road, Gurnee, IL 60031, USA.