Becker Digital Natural Gas Positioner Instruction Manual | 25
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Figure 4 - DNGP Logic Board Layout
Jumpers and Fuses
The logic board layout in Figure 4 shows the location of the jumpers JP1 and JP2. The selection of
the jumpers depends on the power of the transmitter. If the transmitter:
• Doesn’t need external power, select JP1 - 1, 2.
• Needs external power, select JP1 - 2, 3.
The jumper JP2 functions only as a spare replacement for JP1. There are four fuses on the DNGP
logic board. The first fuse F1 is 0.1 A and serves as the PTC fuse for a 4-20 mA signal current
loop. F2 is 0.1 A and serves as the PTC fuse for a 4-20 mA transmitter/positioner current loop. The
fuses F1 and F2 may be reset by cycling the boards off and on.. F3 is a 3 A fuse for the voltage
input power. Finally, F4 is a 3 A replacement fuse for F3.
Jumper between Pins 5 & 6 on
Terminal Board #2 (Only used if
RTU feedback is not connected)
Terminal Board #1
(10 Connectors)
Pin #1
Pin #10
Pin #14
F1 - 0.1 A, PTC Fuse
for 4-20 mA Signal
Current Loop
Terminal Board #2
(14 Connectors)
JP2 - Jumper, Spare
Replacement for JP1
Manual Auto
Stand-by Switch
F2 - 0.1 A, PTC Fuse
for 4-20 mA
Transmitter/Positioner
Current Loop
F3 - 3 A, Fuse
VIN Input Power
F3 - 3 A Spare
Replacement for F3
JP1
Jump 1-2 when Digital Linear
Transmitter is used; RTU
feedback loop power must
be off)
JP1 for Analog Rotary
Transmitter
Option 1: Jump 1 & 2 of JP1
in order to power the loop
from external source; RTU
provides the power
Option 2: Jump 2 & 3 of JP1
in order to power the loop
with DNGP’s internal power
source; RTU does not power
the loop
