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