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Connection of transmitters – Laurel Electronics Ethernet Node Configuration for Series 2 Digital Panel Meters, Counters, Timers, Transmitters and Ethernet-to-Serial Device Servers User Manual

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4. Connection of Transmitters

4.1 LTE Ethernet Transmitters

P1 Power input
3 Power GND
2 AC neut or -DC
1 AC high or +DC

P4 Analog
output (standard)

P3 Solid state
relays (normally
open, standard)

P5 Signal
input &
excitation
output

Ana out -

1

Ana out +

2

Alarm 2 1
Alarm 2 2
Aalrm 1 3
Alarm 1 4

Signal

conditioner

board

RJ45

P2 Ethernet

E2

b

a

d

c

a

b

c

E3

E1

E4

a

b

Reset

LTE Ethernet transmitters feature an RJ45 Ethernet connector, which allows the transmitter to be
connected directly to a computer, router, switch or hub via an Ethernet cable. The RJ45 connector
replaces the screws terminals that would otherwise be provided for RS485 or RS232 data I/O. An
isolated 4-20 mA, 0-20 mA or 0-10V analog output is standard, as are dual 120 mA solid state
relays for alarm or control. Signal conditioner boards are available for all popular industrial analog,
frequency and pulse-type transducer signals.

To reset the transmitter (same as power-up), press the Reset button.

To reset communications to 9600 baud, command mode, Custom ASCII protocol, and Address 1,
place a jumper at E1 and power up the transmitter.

Analog Output

Jumpers

Current (0-20 mA)

E2 a + d

Voltage (0-10V)

E2 b + c

Excitation Output*

Jumpers

5V, 100 mA

E3 a + c; E4 a

10V, 120 mA

E3 a + c; E4 b

24V, 50 mA

E3 b, E4 none

* Attempting to draw more than the rated transducer excitation output current will shut down the

output.