Maintenance; Master Module Maintenance; Stroking The Digital Valve Controller Output - Fisher Fieldvue DVC5010 Quick Start Manual

TRAVEL
SENSOR
ASSEMBLY
HOUSING
48B9444-A
A7026-1 / IL
4-4 4
Because of the diagnostic capability of the DVC5000
Series digital valve controllers, predictive maintenance
is available through the use of FIELDVUE ValveLink
Software. Using the digital valve controller, valve and
instrument maintenance can be enhanced, thus
avoiding unnecessary maintenance. For information
on using the ValveLink software, see the FIELDVUE
ValveLink VL2000 Series Software User Guide.
Stroking the Digital Valve Controller
Output
Connect a 4–20 mA current source and the
recommended air supply (for the recommended supply
pressure, see the specifications in section 5) to the
instrument. Connect the HART Communicator to the
instrument as described in section 3 and turn it on.
From the Online menu, select Main Menu and Stroke
Output. Follow the prompts on the HART
Communicator display to ramp or step the valve
position.
November 1999
TERMINAL BOX ASSEMBLY
TERMINAL BOX COVER
PRINTED WIRING BOARD
ASSEMBLY
0-RING
GASKET
PNEUMATIC RELAY
RELAY CAP
Figure 4-1 . DVC5000 Series Digital Valve Controller Assembly
MODULE BASE ASSEMBLY
SOCKET-HEAD SCREWS (4)
RETAINING CLIPS (4)
I/P CONVERTER
0-RINGS (4)
PRESSURE
GAUGES
(OPTIONAL)
SCREWS (4)

Master Module Maintenance

The digital valve controller contains a master module
consisting of the I/P converter, printed wiring board
assembly, and pneumatic relay. The master module
may be easily replaced in the field without
disconnecting field wiring or tubing.
Removing the Master Module
To remove the master module, perform the following
steps. Refer to figure 4-1 for parts identification.
WARNING
To avoid personal injury or equipment
damage, turn off the supply pressure
to the digital valve controller before
attempting to remove the module
base assembly from the housing.
1. For sliding-stem applications only, a protective
shield for the feedback linkage is attached to the side
of the module base assembly. Remove this shield and
keep for reuse on the replacement module. The
replacement module will not have this protective
shield.

Maintenance

SHROUD
COVER
SCREW
COVER
ASSEMBLY
4-1
4