12
WIKA operating instructions transmitter, models GDT-20, GDHT-20
14063434.02 10/2019 EN/DE
EN
6. Commissioning, operation
6.2.2 Pin assignment
Circular connector M12 x 1 (5-pin)
1
-
-
2
U
B+
Voltage supply
3
U
B-
Ground
4
A
Signal RS-485
5
B
Signal RS-485
6.2.3 Requirements for shielding and grounding
■
Only use shielded cables and connect the shield on one side to the read-out unit.
■
The pressure sensor must be grounded via the process connection.
■
Ensure that no ground circuits can occur.
EMC interferences
Interferences in the common mode can be compensated by the cable shield or the earth
potential of the transmitter.
T-connector
Common mode interferences
Communication
module
Power
supply
Gateway
Transmitter
Gas Compartment
