Protection; Response Control; Tuning; Travel Tuning - Fisher FIELDVUE DVC6200 Instruction Manual

DVC6200 Digital Valve Controller

Protection

D Protection
Some setup parameters may require changing the
protection with the Field Communicator. To remove
protection (change protection to None) requires
placing a jumper across the Auxiliary terminals in the
terminal box in order to change protection.
Note
4 If the Aux Terminal Mode is configured
for Auto Calibration, be sure the
jumper remains across the auxiliary
terminals until the Field Communicator
prompts you to remove it. Removing
the jumper too soon will cause the
instrument to begin auto calibration.
Auto calibration can be terminated by
shorting the Aux Terminals for one
second.
If the jumper is removed too soon,
and auto calibration begins, the valve
will move full stroke. To avoid
personal injury and property damage
caused by the release of pressure or
process fluid, isolate the valve from
the process and equalize pressure on
both sides of the valve or bleed off
the process fluid.
Two levels of protection are available:
D Config & Calib—Both setup and calibration are
protected. Prohibits changing calibration and protected
setup parameters.
D None—Neither setup nor calibration is protected.
Allows changing calibration and setup parameters.
Table 4-3 lists configurable parameters in the
instrument and the requirements for modifying these
parameters, in terms of instrument mode and
protection.
To change an instrument's protection, press the Hot
key on the Field Communicator and select Protection
or from the Online menu, select Configure/Setup,
Detailed Setup, Mode and Protection, and Protection.
34
WARNING
Table 4-2. Gain Values for Preselected Travel Tuning Sets

Tuning

Proportional Gain
Set
C 4.4
D 4.8
E 5.5
F 6.2
G 7.2
H 8.4
I 9.7
J 11.3
K 13.1
L 15.5
M 18.0
X
User Adjusted
(Expert)
Select the desired level of protection. Follow the
prompts on the Field Communicator display to set the
protection level. If necessary, temporarily attach the
jumper to the AUX + and AUX − terminals in the
instrument terminal box when prompted by the Field
Communicator.

Response Control (1-2-2)

Select Configure/Setup, Detailed Setup, and
Response Control. Follow the prompts on the Field
Communicator display to configure the following
response control parameters: Tuning, Tvl/Press
Control (Travel/Pressure Control), Input Char (Input
Characteristic) Define Custom Char (Define Custom
Characteristic), and Dynamic Response.
Tuning

Travel Tuning (1-2-2-1-1)

WARNING
Changes to the tuning set may cause
the valve/actuator assembly to stroke.
To avoid personal injury and property
damage caused by moving parts,
keep hands, tools, and other objects
away from the valve/actuator
assembly.
D Tvl Tuning Set (1-2-2-1-1-1)
Tvl Tuning Set— There are eleven tuning sets to
choose from. Each tuning set provides a
preselected value for the digital valve controller
gain settings. Tuning set C provides the slowest
response and M provides the fastest response.
Table 4-2 lists the proportional gain, velocity gain
and minor loop feedback gain values for
preselected tuning sets.
Minor Loop
Velocity Gain
Feedback Gain
3.0 35
3.0 35
3.0 35
3.1 35
3.6 34
4.2 31
4.85 27
5.65 23
6.0 18
6.0 12
6.0 12
User Adjusted User Adjusted
September 2010