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West P8170 1/8DIN (96 x 48mm) VMD Temperature/Process Controller

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West P8170 1/8DIN (96 x 48mm) VMD Temperature/Process Controller

Excl. VAT: £286.34 Incl. VAT: £343.61
Contral - Official Distributor

The West P8170 Valve Motor Drive (VMD)Controller is a 1/8th DIN open loop controller for valve motor drives or electric actuators, this allows for control without the need for slidewire feedback. In most applications where you require a VMD controller, you have two relay outputs - open & close.

The P8170 can be also used to control a valve where you have a slidewire fitted (slidewire redundant) or to show the postion of the valve (requires aux input option)



The West P8170 is a self-tuning vmd controller with programmable input selection, allowing selection of thermocouple, pt100 or linear input signals. The controller is normally supplied with option 1 & 2 relays for open & close signals, but Triac, SSR drive and analogue outputs can also be provided.

The P8170 uses an advanced tuning algorithm, with selectable pre-tune and self-tuning for easier set-up. Pre-tune when enabled, allows the controller to calculate an initial set of control parameters on the way to the setpoint, (first time you use the controller) before automatically switching to self-tune when it nears the septpoint.  This negates the need for you to calculate the optimum control settings, the controller does it for you. You can leave the controller in self-tune mode to continually adapt to your process, or our recommendation is to disable after the self-tune procedure has optimised your process to a stable value and the controller will use the optimised control parameters on power up from the on.

The P8170 has a modular design (plug and play) which allows for additional features, such as alarm relays, retransmission signal, remote setpoint control, transmitter power supply, and digital communications to be specified at time of order, or added later.


Additional Information

Product Category: Single Loop controller
Dimensions and size: 96mm x 48mm x 100mm (HxWxD), 1/4 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: IP66
Certifications: CE, UL, ULC, CSA
Software Tools: Plus Series Configurator

Product Attachments

View FileWest P8170 VMD Controller Datasheet    Size: (226.16 KB)
View FileWest P Series Manual Concise    Size: (847.47 KB)
View FileWest P4170 P6170 P8170 VMD Manual    Size: (376.41 KB)