性能特点：

·         阀位控制算法

·         设定点斜率

·         2个过程报警

·         双设定点

·         回路报警

·         自动/手动切换

·         RS485 通讯

·         计算机组态

·         遥控设定或阀位显示

West Plus Series P6170 P8170 and P4170 Open Loop Valve Motor Drive Controllers

West 6170+, 4170+, and 8170+ valve motor drive (VMD) controllers have been specifically designed for open loop valve motor drive applications. West's unique VMD tuning algorithm continuously monitors the process to provide stable control at all times. In addition to the VMD outputs, options are available for alarms, 24 VDC transmitter power supply, or retransmit of process value or setpoint. Like other controllers in the West Plus series, these devices can be configured off-line through a dedicated port and Windows-compatible software.

  Key Specifications

Valve position indication and motorized valve control

Remote and dual setpoint options, ramping setpoint

Auto-detected hardware to reduce setup times

Process and loop alarms

Automatic or manual tuning

RS-485 serial interface for Modbus RTU communications

Dedicated socket for off-line configuration using Windows software