Replacing The Module Base - Fisher FIELDVUE DVC6200 Instruction Manual

DVC6200 Digital Valve Controller
TERMINAL
BOX
W9913
Note
The module base is linked to the
7
housing by two cable assemblies.
Disconnect these cable
assemblies after you pull the
module base out of the housing.
3. Pull the module base straight out of the housing
(key 1). Once clear of the housing, swing the module
base to the side of the housing to gain access to the
cable assemblies.
4. The digital valve controller has two cable
assemblies, shown in figure 7-1, which connect the
module base, via the printed wiring board assembly, to
the output of the travel feedback sensor board and the
travel feedback sensor. Disconnect these cable
assemblies from the printed wiring board assembly on
the back of the module base.
CAUTION
To avoid affecting performance of the
instrument, take care not to damage
the module base seal or guide surface.
Do not bump or damage the bare
connector pins on the PWB assembly.
Damaging either the module base or
guide surface may result in material
damage, which could compromise the
instruments ability to maintain a
pressure seal.
72
MODULE BASE ASSEMBLY
CABLE
HOUSING
TO TERMINAL BOX
Figure 7-1. Printed Wiring Board Cable Connections
CABLE TO TRAVEL SENSOR

Replacing the Module Base

Refer to figure 8-2 key number locations.
Note
To avoid affecting performance of the
instrument, inspect the guide surface
on the module and the corresponding
seating area in the housing before
installing the module base assembly.
These surfaces must be free of dust,
dirt, scratches, and contamination.
Ensure the module base seal is in
good condition. Do not reuse a
damaged or worn seal.
1. Ensure the module base seal (key 237) is properly
installed in the housing (key 1). Ensure the O-ring
(key 12) is in place on the module base assembly.
2. Connect the two cable assemblies from the sensor
board to the PWB assembly (key 50). Orientation of
the connector is required.
3. Connect the travel feedback sensor to the PWB
assembly (key 50). Orientation of the sensor is
required.
4. Insert the module base (key 2) into the housing
(key 1).
5. Install three socket head screws (key 38) in the
module base into the housing. If not already installed,
press three retaining rings (key 154) into the module
base. Evenly tighten the screws in a crisscross pattern
to a final torque of 16 NSm (138 lbfSin).
6. Attach the cover (key 43) to the module base
assembly.
PRINTED WIRING
BOARD ASSEMBLY
September 2010