Emerson Fisher FIELDVUE DVC6000, Инструкция по эксплуатации

Страница: 43 / 162

Installation
September 2013 2-21
Output Connections
A factory mounted digital valve controller has its
output piped to the pneumatic input connection on the
actuator. If mounting the digital valve controller in the
field, or installing the remote-mounted DVC6005 base
unit, connect the 1/4 NPT digital valve controller
output connections to the pneumatic actuator input
connections.
Single-Acting Actuators
When using a single-acting direct digital valve
controller (relay A or C) on a single-acting actuator
connect OUTPUT A to the actuator pneumatic input.
When using a single-acting reverse digital valve
controller (relay B) on a single-acting actuator connect
OUTPUT B to the actuator diaphragm casing.
Double-Acting Actuators
DVC6000 digital valve controllers on double-acting
actuators always use relay A. With no input current,
OUTPUT A is at 0 pressure and OUTPUT B is at full
supply pressure when the relay is properly adjusted.
To have the actuator stem extend from the cylinder
with increasing input signal, connect OUTPUT A to the
upper actuator cylinder connection. Connect OUTPUT
B to the lower cylinder connection. Figure 2-18 shows
the digital valve controller connected to a
double-acting piston actuator.
W9131-1
Figure 2-18. FIELDVUE DVC6010 Digital Valve Controller
Mounted on Fisher 585C Piston Actuator
To have the actuator stem retract into the cylinder with
increasing input signal, connect OUTPUT A to the
lower actuator cylinder connection. Connect OUTPUT
B to the upper cylinder connection.
2