West 8170+ VMD & Temperature Single Loop Controller

Part Number: West P8171 Category:

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The 8170+ 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.

The 8170+ incorporates advanced tuning algorithms, with selectable pre-tune and self-tuning for easier setup. The self-tune also reduces output activity to an absolute minimum without compromising control quality, thereby reducing wear and tear on mechanical components such as valves, contactors, and relays. For example, these controls have cut down valve oscillation from 30 to 40 times a minute to just a few in the test. Pre-tune plus self-tuning has also been shown to get on control up to 3 times faster.

In addition to the VMD outputs, which can be designated as outputs for alarms, 24 VDC transmitter power supply, retransmit process value, or setpoint.

  • 3-Point Stepping valve control
  • Valve position indication
  • Jumperless configuration
  • Auto or Manual Tuning
  • Process and loop alarms 
  • Remote/dual setpoint options
  • Dual 4-digit LED displays
  • Universal Input for Thermocouple, RTD, DC, linear mA/V/mV, user selectable
  • Up to 4 outputs; relay, DC linear, SSR driver, Triac, Transmitter Power Supply
  • Modbus communications
  • Program security
Product Category:Single Loop controller
Dimensions and size:96mm x 48mm x 100mm (HxWxD), 1/8 DIN
Primary Input Type:Universal (TC, RTD, DC linear V, DC linear mA/mV)
Other Inputs:1 digital or 1 Remote setpoint
Output Type:Relay, DC linear, SSd; Triac, 24V transmitter power supply
Max. Number of Outputs:5
Control Type:PID with TPSC (VMD), Manual, Alarm, Ramp to setpoint
Power Supply:

100–240V AC 50–60Hz

20-48V AC 50/60Hz

22-65 V DC

Communications:RS-485 serial (Modbus®)
Panel Sealing:IEC IP66, NEMA4X
Certifications:CE, UL, ULC, CSA
Software Tools:Plus Series Configurator

Datasheet: West_6170-81704170-datasheet-US8
Instruction Manual: West-Plus-Series-Full-Manual-EN

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