Instruction Manual

DVC6000 SIS
September 2013
6-6
Example — 18AWG Shielded Audio, Control and
Instrumentation Cable
Manufacturer’s specifications include:
Nom. Characteristic Impedance: 29 Ohms
Nom. Inductance: .15 μH/ft
Nom. Capacitance Conductor to Conductor @ 1 KHz: 51 pF/ft
Nom. Cap. Cond. to other Cond. & Shield @ 1 KHz 97 pF/ft
Allowable Length with this cable = 18000pF /(97pF/ft) = 185 ft
The AUX switch input passes less than 1 mA through
the switch contacts, and uses less than 5V, therefore,
neither the resistance nor the voltage rating of the
cable are critical. Ensure that switch contact corrosion
is prevented. It is generally advisable that the switch
have gold-plated or sealed contacts.
Field Communicator
1. Connect the Field Communicator to the LOOP
terminals on the digital valve controller.
2. Turn on the Field Communicator.
3. From the Online menu, select Service Tools and
Partial Stroke Test.
4. Select either Standard (10%) or Custom. With the
Custom Stroke Test, the stroke may be entered up to
30% with configurable stroking speed and pause time.
5. The currently configured Stroke, Stroking Speed,
and Pause Time is displayed. Choose “Yes” to run the
test using these values. Choose “No” to modify the
values. The default value for Stroke Speed is
0.25%/second.
6. The valve begins to move and the actual travel
reported by the digital valve controller is displayed on
the Field Communicator.
7. Observe the valve as it runs the Partial Stroke Test
to verify that it moves to the desired setpoint and then
returns to the original position.
For information on configuring the Partial Stroke Test,
see Partial Stroke Variables in the Detailed Setup
section.
Additional SIS Diagnostics
Manual Reset
The DVC6000 SIS digital valve controller can be
configured to hold the trip state until a local reset
button is pressed. It is configurable by the Field
Communicator or ValveLink software. Manual Reset
can be initiated by shorting the AUX terminals with a
user-supplied push button for at least 3 seconds, but
less than 5 seconds or by pressing the button next to
the green light on the optional LCP100 local control
panel when the current is at it’s normal state. The
digital valve controller will drive the valve to its normal
operating position.
Demand Mode Tests
The following steps assume the use of single acting
spring and diaphragm actuators or double-acting
spring assist piston actuators.
Perform the following steps to confirm valve operation:
a. Point-to-Point Mode (DVC6000 SIS powered with
4−20 mA current source)
If the DVC6000 SIS is in series with a solenoid valve,
1. Disconnect the power from the solenoid valve,
but maintain the 20 mA current to the digital valve
controller. The valve should move to its “fail safe”
position.
2. Maintain power to the solenoid valve and adjust
the current to the digital valve controller from
20 mA to 4mA. The valve should move to its “fail
safe” position.
3. Remove power from the solenoid valve and
adjust the current to the digital valve controller
from 20mA to 4mA. The valve should go to its “fail
safe” position.
If a solenoid is not used with a DVC6000 SIS,
1. Adjust the current to the digital valve controller
from 20 mA to 4 mA. The valve should move to its
“fail safe” position.
Note
The above tests are applicable for
single-acting direct relay A and C. If
single-acting reverse relay B is used
adjust the current from 4 mA (normal
state) to 20 mA (trip state).
b. Multi-drop Mode (DVC6000 SIS is powered by a
24 VDC power source)
If the DVC6000 SIS is pneumatically in series with a
solenoid valve, and shares a single power source,
Disconnect power to both devices. The valve
should go to its “fail safe” position.
If the DVC6000 SIS is pneumatically in series with a
solenoid valve, with independent power sources,
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