ABB TTF300 Inbetriebnahmeanleitung Seite 59

4.4.1.3 Insulated sensor measuring inset (thermocouple, mV, RTD, ohms), transmitter housing not
grounded
The shields of the power supply cable and the sensor connecting cable are connected to one
another via the transmitter housing.
The shield is grounded at one end of the power supply cable, directly at the supply isolator /
PCS input.
Make sure that the shields are not connected to ground anywhere else.
1
Fig. 11: Shields of the sensor connecting cable and the power supply cable are connected electrically via the
transmitter housing and grounded at one end
1 Temperature sensor
2 Shield insulated from sensor
3 Sensor connection cable
4 Shields connected electrically via transmitter
housing
CI/TTF300-X1
2 3
5
4
5 Transmitter housing, not grounded
6 Power supply cable
7 Grounding point
8 Supply isolator / PCS input
TTF300
Electrical connections
8
6
7
A00272
EN - 21