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FW-F074-A-M_v0404_01_EN.docx
5.4.3
F074-A-OT-PL-XI-ZB - Ex ia IIC/IIIC
Fig. 29: F074-A-OT-PL-XI-ZB - Ex ia IIC/IIIC - Intrinsically Safe application.
*
Sensor supply voltage not available in this example.
Please note: Type PL may be used in combination with the battery (Type PC).
PL will power the F074-A, the battery will be disabled automatically until the power is disconnected.
Configuration example IIA - IIB and IIC application - F074-A-OT-PL-XI-ZB
TERMINAL CONNECTORS
F0-series
1
2
Common ground
Signal
C
irc
ui
t d
ep
en
ds
o
n
ty
pe
o
f s
ig
na
l
7
8
Common ground
9
1
0
Common ground
Supply backlight
HAZARDOUS AREA
SAFE AREA
+
-
Power supply or
switch interface
For example
MTL5025
MTL5011B
+
-
Power supply
For example
MTL5025
= max. 30 V
= max. 200 mA
= max. 1,2 W
Uo
Io
Po
= max. 30 V
= max. 200 mA
= max. 0,75 W
Uo
Io
Po
Note: above values are safety values.
Consult the technical specification for operational values.
+
-
Power supply
For example
MTL5025
= max. 30 V
= max. 93 mA
= max. 0,92 W
Uo
Io
Po
Backlight option: type ZB
Sensor supply is not available: unit is input loop powered (type PL).
Please note: type PL may be used in combination with the battery (type PC). PL will power the unit; the battery will be disabled automatically till power is disconnected.
Alarm output type OT: passive transistor
I.S. level sensor - input type A-PL: 4-20mA loop powered
e.g. relay
Intrinsically Safe apparatus
