Delfield SST2-S Manual de Instruções descarregar pdf (Página 43)

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.

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Delfield SST2-S Manual de Instruções Página 43