Fluidwell F013-A, Руководство пользователя

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Page 38
FW-F013-A-M_v0404_01_EN.docx
5.3 TERMINAL CONNECTORS INTRINSICALLY SAFE APPLICATIONS
Terminal connectors F013-A-(PX / PC / PD / PL)-XI-(ZB):
Fig. 26: Overview terminal connectors Type XI - Intrinsically Safe applications
5.3.1 POWER SUPPLY WIRING
The F013-A 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 4 and 5 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.
•
Type PD:
offers a sensor supply on terminal 6 with the same voltage as connected to terminal 5
(internally linked).
•
Type PL:
the unit will be powered from the 4-20mA input signal. Terminal 4-6 are not available.
5.3.2 TERMINAL 6 - TYPE PD: SENSOR SUPPLY
Type PD offers a supply for the sensor. Terminal 6 is directly connected to terminal 5, so the offered
voltage is the same as connected to terminal 5.
5
POWER SUPPLY
UNIT
TYPE: PD / PX
6 1 2
SENSOR SIGNAL
ANALOG INPUT
TYPE: A (0)4-20mA
8 7
R1 R1 + +
10
POWER SUPPLY
BACKLIGHT
OPTION: ZB
+
SENSOR
SUPPLY
TYPE: PD
4 9
I
ALARM
OUTPUT
TYPE: OT