beautypg.com

Dc & externally powered process, Strain gauge, Ac & ac+dc true rms – Laurel Electronics LTM DPM SERIES ANALOG INPUT, SERIAL DATA OUTPUT User Manual

Page 7: Thermocouple, Load cell, P4 - analog output detail, Mounting for cooling

background image

- 7 -

P6 - SIGNAL INPUT DETAIL

2-Wire Process Transmitter

+

-

Excitation return

1

+ Excitation

2

- Signal input

3

+ Signal input

4

DC & Externally Powered Process

-DC
+DC

Strain Gauge

Signal High

1

NC 2

Signal Low

3

Signal High

4

AC & AC+DC True RMS

2, 20, 200, 600V

AC neutral
0.2V, current

NC 1
NC 2

- Signal input

3

+ Signal input

4

Thermocouple

Excitation return

1

- Sense 2

- Signal 3

+ Signal 4

+ Excitation

5

+ Sense 6

Load Cell

Excitation return

1

+ Excitation

2

- Signal input

3

+ Signal input

4

RTD or Resistance - 2 Wire

Excitation return

1

+ Excitation

2

- Signal input

3

+ Signal input

4

Excitation return

1

+ Excitation

2

- Signal input

3

+ Signal input

4

RTD or Resistance - 3 Wire

RTD or Resistance - 4 Wire

For 4-wire load cell connection, jumper
Pin1 to Pin 2, and Pin 5 to Pin 6.

P4 - ANALOG OUTPUT DETAIL

Driving a Load with 4-20 mA

Analog return

1

4-20 mA output

2

500 Ohms max

Driving a Load with 0-10V

Analog GND 1

0-10V output

2

5 kOhms min

Excitation return

1

+ Excitation

2

- Signal input

3

+ Signal input

4

Excitation return

1

+ Excitation

2

- Signal input

3

+ Signal input

4

MOUNTING FOR COOLING

AL 1

AL 2

RESET

POWER

AL 1

AL 2

RESET

POWER

AL 1

AL 2

RESET

POWER

AL 1

AL 2

RESET

POWER

AL 1

AL 2

RESET

POWER

Mount transmitters with ventilation holes at top
and bottom. Leave minimum of 6 mm (1/4")
between transmitters, or force air with a fan.

AL 1

AL 2

RESET

POWER

AL 1

AL 2

RESET

POWER