Instruction Manual Supplement
D103783X012
DVC2000 Digital Valve Controller
September 2017
5
Output Options Circuit
All three options circuits (transmitter, switch 1 and switch 2) control current from an external power source similar to
the operation of a 2-wire transmitter.
Limit Switches
On units that are supplied with integral limit switches, additional terminals provide the field wiring connection point.
The limit switches are isolated from each other and from the digital valve controller's primary feedback. If only one
switch is to be used, you must use channel 1. Although electrically isolated per Intrinsic Safety requirements, channel 2
derives its power from channel 1. Therefore channel 2 cannot be used alone.
Position Transmitter
On units that are supplied with an integral valve position transmitter, additional terminals provide the field wiring
connection point. The position transmitter circuit in the DVC2000 derives it's operating power from the 4-20 mA
control system input in the same manner as a 2-wire transmitter. In addition, the transmitter function gets position
information (through an opto-isolator) from the digital valve controller so the 4-20 mA position control loop must also
be powered in order for the position transmitter to provide an output representing the valve position.
Local User Interface
The local user interface is available on all DVC2000 digital valve controllers. The interface consists of a liquid crystal
display, four pushbuttons, and a switch for position transmitter configuration. The DVC2000 is supplied with one of
three different language packs preinstalled, depending on the firmware revision and ordering option.
Refer to the DVC2000 instruction manual for additional details on using the Local User Interface to configure and
calibrate the DVC2000.
Write Protection
There are two Write Protection states for the DVC2000: Not Protected or Protected. Protected prevents configuration
and calibration changes to the instrument. The default setting is Not Protected. Protection is controlled under
software control.
Firmware and Language Pack Upgrade
The firmware and language pack of any DVC2000 can be upgraded to the latest version using the “Firmware
Download” tool in ValveLink™ software. The new firmware incorporates all of the new functionality and corrections
and improvements made to the technology of the DVC2000 product.
The firmware download process requires:
D Around 30 minutes to complete
D The DVC2000's instrument mode must be “Out of Service”
D The DVC2000 is powered with 12 mA or greater
D That you isolate the valve from the process and equalize pressure on both sides of the valve or bleed off the
process fluid because the routine will cause the DVC2000 to restart.
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