Instruction Manual Supplement
D104299X012
DVC6200 SIS
October 2018
21
PST START POINT
Figure 28. Valve Signature Representation
NORMAL
j SUPPLY PRESSURE
k END POINT PRESSURE CONTROL
l INCOMING PRESSURE THRESHOLD
m LOW FRICTION BREAKOUT PRESSURE THRESHOLD
n HIGH FRICTION BREAKOUT PRESSURE THRESHOLD
o OUTGOING PRESSURE THRESHOLD
p TARGET TRAVEL MOVEMENT 30%
k
l
m
n
o
p
TRIPPED
TRAVEL
PRESSURE
j
OUTGOING STROKE
INCOMING STROKE
SIS Options
D Auto Partial Stroke Test Interval is the interval of time (in days, hours, and minutes) between partial stroke tests that
are automatically run by the digital valve controller, subject to the device being powered up. A value of 0 disables
this feature.
D Start PST on Loop Current Trigger—When this feature is enabled, the digital valve controller will run a partial stroke
test if the loop current is set to within +/0.5% of the PST trip point. The loop current must remain at that point for
the duration of the test. To abort the test, the loop current must be returned to the normal or tripped current. This
feature is disabled by default. This feature is not available when a looppowered local control panel is installed.
PST Trip Point (ETT) is the point at which the loop current must be set to run a partial stroke test for
energizetotrip applications. This value is not configurable and is preset at 8 mA.
PST Trip Point (DETT) is the point at which the loop current must be set to run a partial stroke test for
deenergizetotrip applications. This value is not configurable and is preset at 16 mA.
D Latch on Position Trip defines if the instrument latches on a position trip and waits for a manual reset or will reset
when the supply pressure returns.
D Position trip Point – If the travel goes below this point in calibrated travel when the set point is at the normal end the
instrument will go to the no air position. This protect against conditions where the supply pressure has drooped
causing the valve to be partially open and too close to the seat.
D Manual Reset Required defines the power up behavior of the DVC6200 SIS. Auto Reset allows the valve to track the
command signal when power is applied to the device. Manual Reset will lock the device in its safety position until
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