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
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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