Manual – 3000 NRL Family
Unidata Manual - 3000 NRL Family - 06 08 2019.docx
Page 34
5.5.3 Option 3 4-20mA INSITU Current Loop Sensor
5.5.4 Option 4 SQL Modbus Sensor
JP Config
Connection
Description
Cable Colour
JP1 – OPEN
JP2 RIGHT
(linking pins 1&2 to supply
loop power to sensor)
JP3 LEFT
(linking pins 2&3 to feed return
current in to analog input)
JP4 - CLOSED
(to feed return current through
loop current sensing resistor)
P8 C0
N/A
N/A
P1 SDI
N/A
N/A
P9 GND
N/A
N/A
P2 MB+
N/A
N/A
P3 MB-
N/A
N/A
P7 GND
Insitu housing GND
TBA
P4 ILP
Loop Supply Output
Brown
P5 IPWR
N/A
N/A
P6 G/LP/A
Loop Supply Return
Black
JP Config
SQL Pin No.
Description
Cable Colour
JP1 – CLOSED
(if needed, to supply power to
sensor)
JP2 – OPEN
JP3 RIGHT
(linking pins 1&2 to ground
black wire)
JP4 - OPEN
N/A
N/A
N/A
N/A
N/A
N/A
2
RS485+
Blue
3
RS485-
Green
N/A
N/A
N/A
N/A
5
Sensor Power
(optional)
Red
7
Ground
Grey
