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FW-F043-T-M_v0404_01_EN.docx
5.3
TERMINAL CONNECTORS INTRINSICALLY SAFE APPLICATIONS
Terminal connectors F043-T-(PX / PC)-XI-(ZB):
Fig. 18: Overview terminal connectors Type XI - Intrinsically Safe applications
5.3.1
POWER SUPPLY WIRING
The F043-T can be powered from an external power supply. An internal power supply is also
available in the form of a lithium battery. When both external and internal power supplies are
available, the internal power supply is interrupted and will act as a backup supply. Note that the
optional backlight only works with an external power supply.
The following types of power supply are available for hazardous area:
•
Type PX:
as standard, all intrinsically safe products are supplied with terminal 5 and 6 to power the
product externally.
•
Type PC:
offers - additional to type PX - an internal Intrinsically Safe lithium battery. This ATEX certified
battery (FW-LiBAT-xxx) may be changed in hazardous area.
8
7
R1
R1
10
POWER SUPPLY
BACKLIGHT
OPTION: ZB
+
9
ALARM
OUTPUT
TYPE: OT
5
POWER SUPPLY
UNIT
TYPE: PX
6
1
2
SENSOR SIGNAL
TYPE T: PT100
+
4
3
PT100 - 2 WIRE
PT100 - 3 WIRE
PT100 - 4 WIRE
