Version: TCM_0450_E80_M_EN_150209_E007
29
Installation
Fig. 14
: Wiring diagram for 4…20 mA current loop
Terminal
Description
1
Positive terminal of the passive
4…20 mA loop 1
2
Negative terminal of the passive
4…20 mA loop 1
3
Positive terminal of the passive
4…20 mA loop 2
4
Negative terminal of the passive
4…20 mA loop 2
As the terminals are floating, the load resistor and the current meter can be placed in the positive or in the
negative supply rail.
Connect the shield of the cables to protective ground (terminal 52).
3.2.6.
Connecting the Analog Input
The TCE 8000 with
“PRESSURE COMPENSATION” option provides one passive 4…20 mA output
CURRENT 2 and one active
4…20 mA current input CURRENT 1.
The current input is designed to drive a 2-wire passive pressure sensor. It provides a minimum driving voltage of
16 V.
The negative terminal (2) is internally connected to GND (non Ex version) or to PE (Ex version).
Fig. 15: Wiring
diagram for 4…20 mA current input
TCE 8000
TCE 8000