M12 connector pinout and wiring - DMT153

DMT153 Quick Guide
Product status
Document code
M213152EN-C
ft:locale
en-US
Product
DMT153
Document type
User guide
CAUTION Only power the transmitter with one of the following:
  • An approved/certified Class 2 power supply. The output of the power supply may not exceed 100 VA with operating voltage not more than 30 Vrms, 42.4 Vpeak or 60 V DC.
  • An approved/certified Limited Power Source (LPS) (CAN/CSA-C22.2 No. 60950-1 or UL 60950-1).
  • Power source fulfilling requirements of Limited Energy Circuit in accordance with IEC/EN/UL/CSA 61010-1.
CAUTION Make sure to use the power supply unit only in its specified environmental conditions.
Pinout of DMT153 M12 5-pin connector
Pin # Function Notes Wire colors 1
1 Power supply

Operating voltage:

  • With RS-485 output: 11–28 V DC
  • With analog output: 15–28 V DC
  • At low temperature or high pressure: 21–28 V DC
 Brown
2 RS-485− or voltage output White
3
  • Power and signal ground
  • RS-485 common
 Blue
4 RS-485+ or current output Black
5 Output mode control and purge control in analog mode

Floating (not connected) = RS-485

Grounded = Analog outputs

If you want to be able to trigger or prevent sensor purge manually in analog mode, do not connect pin #5 permanently to ground. Instead, use a relay or similar to control the pin.

The purge-related functionality of pin #5 can be configured using Vaisala Insight PC software, Indigo80 indicator, or the Modbus protocol. For more information, see DMT153 User Guide (M213149EN) at docs.vaisala.com.

 Gray
DMT153 wiring examples with analog host (left) and RS-485 host (right)
1 Wire colors in Vaisala cables with open wires.