Version 2.6
Operating instructions
AFGUARD
®
Zone 0 and Zone 1
Page:
20
of:
41
FAUDI Aviation GmbH, Scharnhorststraße 7 B, D-35260 Stadtallendorf
BA_AFGUARD_Ex_rev2.6_Englisch_l
ogo
4 Cabling
WARNING!
The electrical connection must only be carried out by authorised technical personnel.
Technical personnel must have read and understood the instructions in this manual and
must adhere to them.
Ensure that there is no voltage at the power cable before beginning connection.
Colour of cable
Function
blue
Signal output
brown
Power supply
4.1
Direct connection to isolated converter with power supply
The power circuit parameters should comply with:
Supply and signal circuit intended for connection to an intrinsically safe 4 to 20 mA current
loop
Voltage
U
i
DC
30
V
Current
I
i
100
mA
Power
P
i
750
mW
Effective internal capacitance
C
i
negligible
Effective internal inductance
L
i
negligible
Make sure to follow the
manufacturer’s instructions of the operating manual that will be
provided with your isolating converter with power supply. For hazardous areas, make sure to
use correct intrinsically safe power supply.
E
It is only permitted to use the cable specified by FAUDI Aviation GmbH.
For direct connection between the AFGUARD
®
and the recommended isolated converter
with transmitter supply, FAUDI Aviation delivers 15 m of two-wired cable with isolated plug
adapter M12*1. The cable can only be shortened by authorized technical personnel.
The following connection is recommended:
E
It is only allowed to clean the cable using a damp cloth to prevent electrostatic charges.
E
The AFGUARD
®
must be connected via specified sensor cable with plug adaptor with the
terminal clamps of an inherent safety isolated converter with power supply.
The marking "II 1/2G Ex ib [ia] IIB T4" applies to the transmitter in case of being supplied
by means of an IS 2-wire supply, and signal circuit providing level of protection "Ex ib IIB."
The marking "II 1/2G Ex ia IIB T4" applies to the transmitter in case of being supplied by
means of an IS 2-wire supply, and signal circuit providing level of protection "Ex ia IIB."
