DVC2000 Digital Valve Controller
July 2009
2-10
Figure 2-14. Magnetic Assembly Orientation on Quarter-Turn Actuators
ORIENTATION
AT ONE TRAVEL
EXTREME
ORIENTATION
AT MID-TRAVEL
(FLATS PARALLEL
TO DVC2000
CHANNEL)
ORIENTATION
AT THE OTHER
TRAVEL EXTREME
W8836
requirements of ISA Standard 7.0.01. A maximum 40
micrometer particle size in the air system is
acceptable. Further filtration down to 5 micrometer
particle size is recommended. Lubricant content is not
to exceed 1 ppm weight (w/w) or volume (v/v) basis.
Condensation in the air supply should be minimized
A 67CFR filter regulator with standard 5 micrometer
filter, or equivalent, may be used to filter and regulate
supply air. If pressure regulation is not required, a 10
micron in-line filter may be used.
Connect the nearest suitable supply source to the
connection with the arrow pointing towards the
opening (see figure 2-7).
Electrical Connections
WARNING
Select wiring and/or cable glands that
are rated for the environment of use
(such as hazardous area, ingress
protection and temperature). Failure
to use properly rated wiring and/or
cable glands can result in personal
injury or property damage from fire or
explosion.
Wiring connections must be in
accordance with local, regional, and
national codes for any given hazardous
area approval. Failure to follow the
local, regional, and national codes
could result in personal injury or
property damage from fire or
explosion.
The digital valve controller is normally powered by a
control system output card. The use of shielded cable
will ensure proper operation in electrically noisy
environments. Wire size requirements are 14 AWG
maximum, 26 AWG minimum.
Be sure to follow the appropriate I.S. circuit guidelines
when installing field wiring to the loop terminals as well
as the limit switch and transmitter terminals.
Wire the digital valve controller as follows:
1. Remove the main instrument cover.
2. Route the field wiring into the terminal box through
the conduit connection. When applicable, install
conduit using local and national electrical codes that
apply to the application.
3. Connect the control system output card positive
wire “current output” to the +11 terminal. Connect the
control system output card negative (or return) wire
“current output” to the
−
12 terminal.
4. Two ground terminals are available for connecting
a safety ground, earth ground, or drain wire. These
ground terminals are electrically identical. Make
connections to these terminals following national and
local codes and plant standards.
2
Содержание Fisher FIELDVUE DVC2000
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Страница 71: ...Parts July 2009 7 1 7 7 Section 7 Parts Parts Ordering 7 2 Parts Kits 7 2 Parts List 7 2 7 ...
Страница 77: ...Principle of Operation July 2009 A 1 A A Appendix A Principle of Operation DVC2000 Operation A 2 A ...
Страница 80: ...DVC2000 Digital Valve Controller July 2009 A 4 A ...
Страница 104: ...DVC2000 Digital Valve Controller July 2009 Index 8 C Index ...
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