Siemens 7ML5431 - Page 41

Connecting
5.2 Connecting SITRANS LR250
SITRANS LR250 with mA/HART
Operating Instructions, 10/2019, A5E32220602-AG
41
①
Use a 2 mm Allen key to
loosen the lid-lock set screw
c)
④
Cable shield
②
Plug (IP68)
⑤
Ground terminal
③
Optional cable gland
a) b)
(or NPT cable entry)
b)
a)
May be shipped with the device.
b)
If cable is routed through conduit, use only approved suitable-size hubs for waterproof
applications.
c)
Not applicable to 3-A Sanitary approved device.
Wiring instructions
1. Strip the cable jacket for approximately 70 mm (2.75") from the end of the cable, and
thread the wires through the gland. (If cable is routed through conduit, use only approved
suitable-size hubs for waterproof applications.)
2. Connect the wires to the terminals as shown: the polarity is identified on the terminal
block.
3. Ground the device according to local regulations.
4. Tighten the gland to form a good seal.
5. Close the lid and secure the locking screw before programming and device configuration.
Note
Lid
-lock set screw not applicable to 3-A Sanitary approved device.