Fisher® FIELDVUE DVC6200 Digital Valve Controller

Instruction Manual
D103605X012
Maintenance and Troubleshooting
July 2012
Component Replacement
When replacing any of the components of the DVC6200, the maintenance should be performed in an instrument shop
whenever possible. Make sure that the electrical wiring and pneumatic tubing is disconnected prior to disassembling
the instrument.
Removing the Module Base
Refer to figure 7‐2 or 7‐4 for key number locations.
WARNING
To avoid personal injury or equipment damage from bursting of parts, turn off the supply pressure to the digital valve
controller and bleed off any excess supply pressure before attempting to remove the module base assembly from the
housing.
1. Unscrew the four captive screws in the cover (key 43) and remove the cover from the module base (key 2).
2. Using a 6 mm hex socket wrench, loosen the three‐socket head screws (key 38). These screws are captive in the
module base by retaining rings (key 154).
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.
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/base unit has two cable assemblies, shown in figure 6‐1, which connect the module
base, via the printed wiring board assembly, travel sensor and the terminal box. Disconnect these cable assemblies
from the printed wiring board assembly on the back of the module base.
Figure 6‐1. Printed Wiring Board Cable Connections
TERMINAL
BOX
MODULE BASE ASSEMBLY
PRINTED WIRING
BOARD ASSEMBLY
W9924-1
HOUSING
CABLE
TO TERMINAL BOX
CABLE TO TRAVEL SENSOR
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