West Control Solutions 6170+, 8170+, 4170+ Data Sheet



West 6170+,8170+ & 4170+ Valve
Motor Controller

Jumperless Configuration

 Auto Detected Hardware
 Process & Loop Alarms
 Modbus Communications
 Auto or Manual Tuning
 Motorised Valve Control
 Valve Position Indication
 Remote/Dual Setpoint Options
 Available in 1/16, 1/8 & 1/4 DIN Format

The new Plus Series VMD Controllers have been specifically designed for open loop valve motor drive

applications and feature the improved Plus Series interface and greater field flexibility.

Specification

Features

Control Types Full PID with Pre-tune, Self-tune and manual tuning modes.
Valve Control Open Loop Valve Motor Drive.
Auto/Manual

Output Configuration Up to 4 possible, two required for valve control, additional outputs for alarm, 24VDC transmitter

Alarm 1 & 2 Types Process high, process low, SP deviation, band, logical OR / AND. Also 1 loop alarm for process

Human Interface 4 button operation, dual 4 digit 10mm & 8mm (6170+ and 8170+) and 13mm & 10mm (4170+) high

PC Configuration Off-line configuration from PC serial port to dedicated configuration socket (communications option

Selectable from front panel or via digital input, with bumpless transfer.

power supply or retransmit of process value or setpoint.

control security. Process alarms have adjustable hysteresis.

LED displays, optional choice of colours (Red/Red, Red/Green, Green/Red or Green/Green), plus 5
LED indicators

not required). Configuration Software for Windows 98 or higher. West Part Number: PS1-CON

Input

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.

Impedance >10MΩ for Thermocouple and mV ranges, 47KΩ for V ranges and 5Ω for mA ranges
Accuracy ±0.1% of input range ±1 LSD (T/C CJC better than 1°C)
Sampling 4 per second, 14 bit resolution approximately
Sensor Break Detection <2 seconds (except zero based DC ranges), control O/P’s turn off, high alarms activate for T/C and

Scaleable -1999 to 9999, with adjustable decimal point

mV ranges, low alarms activate for RTD, mA or V ranges

Output & Options

Control & Alarm Relays Contacts SPDT 2 Amp resistive at 240V AC (120V AC Max for direct VMD), >500,000 operations.

Control SSR Driver Outputs
Triac Outputs 0.01 to 1 Amp AC, 20 to 280Vrms, 47 to 63Hz. 140V Max for direct VMD.
DC Linear Outputs 0 to 20mA, 4 to 20mA into 500Ω max, 0 to 10V, 2 to 10V, 0 to 5V into 500Ω min.

Transmitter Power Supply Output 24VDC (nominal) into 910Ω minimum to power external devices
Serial Communications 2 Wire RS485, 1200 to 19200 Baud, Modbus protocol

Digital Input Selects between 2 setpoints or Auto/Manual control. Volt free or TTL input

(1A 2xSPST 200,000 operations for Dual Relay)
Drive capability >10V DC in 500 minimum

Accuracy ±0.25% at 250Ω (degrades linearly to 0.5% for increasing burden to specified limits)
Retransmit of PV or SP Only.

Ref DS-Px170-1209-1-EN

© West Control Solutions 2009