Becker Digital Natural Gas Positioner Instruction Manual | 15
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3. Specifications
Technical Specifications
Table 1 - DNGP Technical Specifications
Item
Definition
Electrical Power
Requirements
VIN = 12 to 24 VDC nominal (11-30 VDC) 21 VDC min. for 24 VDC
solenoid, 11 VDC min. for 12 VDC solenoid 1 to 2 A including DNGP heater
and transmitter heater (3 A fuse line recommended)
.
Over Current Protection
20 Joule, 2000 A surge and lightning transient protection 3 A fuse for Logic
module 24 VDC power 50/150 mA PTC resettable fuses for position input
signal and transmitter feedback signal
.
Position Input Signal
(Selectable) Standard
4-20 mA (Split Range: 4 mA min. up to 16 mA max. in 1 mA increments),
minimum 4 mA band
.
Remote Indicator Dual
Function Output
The remote Indicator function can be selected to function as Solenoid
Counter or In Standby/Manual. In Counter mode it pulses whenever either
solenoid activates. In
Standby/Manual
mode, it is active whenever the
DNGP is in
Standby
or
Manual
modes.
Valve Position
Feedback Module
Primary: Linear Digital Transmitter Analog Rotary Types also available
.
Display
80 (4 x 20) character Vacuum Fluorescent Display for: Command Signal,
Valve Position Feedback, Solenoid Cycle Count (stored in 10-year
nonvolatile memory), Dead Band value. Incorporates a user navigational
menu system.
Input Mode Selection
Manual/Auto/Standby
Electrical Manual Override
Manual pushbutton positioning (must engage Manual Mode with
Auto/
Manual/Standby Switch)
.
Communications
DNGP Dashboard PC Interface, Modbus® communication protocol
Solenoid Bypass
Can be ON or OFF within 1.5% of the end stroke (in full closed and open
position).
Loss of Signal Options
(Selectable)
Drive to 4 mA position (open or closed valve position) Drive to 20 mA
position (open or closed valve position) or Lock in last controlled position
.
