Wiring; Overview; Measurement Unit Connection - Endress+Hauser iTEMP PCP TMT 181 Mise En Service

Wiring overview
Measurement unit
connection

5 Wiring

5.1 Overview

Terminal layout
Fig. 5.1: Head transmitter wiring

5.2 Measurement unit connection

Attention:
Switch off power supply before opening the housing cover. Do not install or connect
the unit to mains power. If this is not followed parts of the electronic circuit will be
damaged.
• Sensors:
Connect the sensor cables to the respective head transmitter terminals
(Terminals 3 to 6) by following the wiring diagram (see fig. 5.1).
• Output signal and power supply:
Open the PG cable gland on the head transmitter or field housing. Feed the cable
through the opening in the PG cable gland and then connect the cable cores to
terminals 1 and 2 according to the wiring diagram (see fig. 5.1).
• PC configuration (SETUP socket):
Open the flap on the SETUP socket (Fig. 5.1, Pos. A) and connect the SETUP
connection cable.
Hint:
The screws on the terminals must be screwed up tightly. Head transmitter
configuration during measurement operation is possible. There is no need to
disconnect cables!
Potential leveling
Hint:
Please take note of the following when installing the head transmitter remotely in a
field housing. The screen on the output (output signal 4...20 mA) must have the same
potential as the screen at the sensor connections!
For an effective screening the cable screen must be widely connected to the field
housing. This can be achieved by connecting the cable screen to the special
EMC-PG13.5 cable gland.
Open the field housing PG cable gland and connnect the screen of the output and
sensor connection according to Fig. 5.2.
Pos.A: SETUP socket
2-wire
3-wire 4-wire
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