Emerson FIELDVUE DVC6200f Instruction Manual page 232

DVC6200f Digital Valve Controller
TERMINAL
BOX
W9924-1
7
Note
The module base is linked to the
housing by two cable assemblies.
Disconnect these cable
assemblies after you pull the
module base out of the housing.
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.
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
220
MODULE BASE ASSEMBLY
HOUSING
CABLE
TO TERMINAL BOX
Figure 7-1. Printed Wiring Board Cable Connections
CABLE TO TRAVEL SENSOR
module base, via the printed wiring board assembly, to
the travel sensor and the terminal box. Disconnect
these cable assemblies from the printed wiring board
assembly on the back of the module base.
Replacing the Module Base
Refer to figure 8-2 key number locations. Refer to
figure 7-2 for a view of the back of the PWB assembly
sub-module.
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 terminal box connector to the PWB
assembly (key 50). Orientation of the connector is
required.
PRINTED WIRING
BOARD ASSEMBLY
November 2010