Wednesday, 08 04th

Last updateMon, 15 Sep 2014 5am

West P4170 1/4 Din Valve Motor Controller

The new + Series VMD Controllers have been specifically designed for open loop valve motor drive applications and feature an improved + Series interface and greater field flexibility.

•  Jumperless Configuration              •  Auto or Manual Tuning

•  Auto Detected Hardware                •  Motorised Valve Control

•  Process & Loop Alarms                  •  Ramping Setpoint

•  Modbus Communications               •  Remote/Dual Setpoint Options

Technical Data

Control Types Full PID with Pre-tune, Self-tune and manual tuning modes.
Valve Control Open Loop Valve Motor Drive
Auto Manual Selectable from front panel or via digital input, with bumpless transfer.
Output Configuration Up to 5 possible, two required for valve control, additional outputs for alarm, 24VDC transmitter power supply or retransmit of process value or setpoint
Human Interface

4 button operation, dual 4 digit 10mm & 8mm high LED displays, optional choice of colours (Red/Red, Red/Green, Green/Red or Green/Green), plus 5 LED indicators

Thermocouple J, K, C, R, S, T, B, L, N & PtRh20%vsPtRh40%.
RTD 3 Wire PT100, 50Ω per lead maximum (balanced)
DC Linear 0 to 20mA, 4 to 20mA, 0 to 50mV, 10 to 50mV, 0 to 5V, 1 to 5V, 0 to 10V, 2 to 10V. Scaleable -1999 to 9999, with adjustable decimal point
Accuracy ±0.1% of input range ±1 LSD (T/C CJC better than 1°C)
Sampling 4 per second, 14 bit resolution approximately
Outputs & Options  
Control & Alarm Relays Contacts SPDT 2 Amp resistive at 240V AC, >500,000 operations
Control SSR Driver outputs Drive capability >10V DC in 500Ω minimum
DC Linear outputs

0 to 20mA, 4 to 20mA into 500Ω max, 0 to 10V, 2 to 10V, 0 to 5V into 500Ω min. Control outputs have 2% over/under drive applied. Accuracy ±0.25% at 250Ω (degrades linearly to 0.5% for increasing burden to specified limits)

Transmitter Power Supply Output 24VDC (nominal) into 910Ω minimum to power external devices
Digital Input Selects between 2 setpoints or Auto/Manual control. Volt free or TTL input
Remote setpoint / Valve

0 to 20mA, 4 to 20mA, 0 to 100mV, 0 to 5V, 1 to 5V, 0 to 10V, 2 to 10V or ≥2KΩ Potentiometer Scaleable -1999 to 9999.

Position Input Local/Remote setpoint selected from digital input (supplied as part of Full RSP) or front panel. Valve Position Indication mode using Remote Setpoint Input.

Operating & Environmental

Power Supply 100 to 240V 50/60Hz 7.5VA (optional 20 to 48V AC 7.5VA/22 to 65V DC 5 watts)


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