Manual – 3000 NRL Family
Unidata Manual - 3000 NRL Family - 17 09 2018.docx
Page 36
Terminal
Connection
Description
POWER 9-30VDC
AUX+
External 9V to 30VDC Power
AUX-
External 9V to 30VDC Power Supply -
POWER 9-30VDC
MAIN+
External 9V to 30VDC Power
MAIN-
External 9V to 30VDC Power Supply -
MODBUS
GND 1
Ground MODBUS Channel 1
1A-
MODBUS Channel 1 A-
1B+
MODBUS Channel 1 B+
GND 0
Ground MODBUS Channel 0
0A-
MODBUS Channel 0 A-
0B+
MODBUS Channel 0 B+
SDI-12
GND Ground
SDI-12
SDI-1 SDI-12
Signal
RELAYS
NO0
Normally open 0 1A 30Vdc, 0.5A 125VAC
COM0 Common
0
NC0
Normally closed 0 1A 30Vdc, 0.5A 125VAC
5V
5V regulated 100mA fused
GND Ground
COUNTERS
GND Ground
C-3
16 bit, DC to 32Hz potential free contacts or
0 to 5VDC
C-2
16 bit, DC to 32Hz potential free contacts or
0 to 5VDC
GND Ground
C-1
16 bit, DC to 32Hz potential free contacts or
0 to 5VDC
C-0
16 bit, DC to 320Hz potential free contacts or
0 to 5VDC
OUT
GND Ground
OUT0
Digital Output0 Open Drain FET 30V DC, 250mA max
ANALOG INPUTS
AGND Analog
Ground
A3
A3 +ve single
A2
A2 +ve single
AGND Analog
Ground
AGND Analog
Ground
A1
A1 +ve single
A0
A0 +ve single
AGND Analog
Ground
