Yokogawa EJX115A - Manual (Page 13)

<2. Handling Cautions>
2-5
IM 01C25T04-01EN
Note 6. Installation Instructions
Non-Hazardous Location
Hazardous Location
F0202.ai
Terminator
Safety Barrier
Transmitter
Pressure
Transmitter
Transmitter
+
−
+
−
+
−
Terminator
+
− +
−
[Installation Diagram]
SUPPLY
• In the rating 1(*1), the output current of the
barrier must be limited by a resistor ‘Ra’ such
that Io = Uo/Ra.
• In the rating 2(*2), the output of the barrier
must be the characteristics of the trapezoid
or the rectangle and this transmitter can be
connected to Fieldbus equipment which are
in according to the FISCO model.
• The terminators may be built in by a barrier.
• More than one transmitter may be connected
to the power supply line.
• The terminator and the safety barrier shall be
certified.
Electrical data:
Maximum Input Voltage Ui: 24 V
Maximum Input Current Ii: 250 mA
Maximum Input Power Pi: 1.2 W
Maximum Internal Capacitance Ci: 3.52 nF
Maximum Internal Inductance Li: 0 μH
*1:
Rating 1
or
Maximum Input Voltage Ui: 17.5 V
Maximum Input Current Ii: 380 mA
Maximum Input Power Pi: 5.32 W
Maximum Internal Capacitance Ci: 3.52 nF
Maximum Internal Inductance Li: 0 μH
or
Maximum Input Voltage Ui: 17.5 V
Maximum Input Current Ii: 460 mA
Maximum Input Power Pi: 5.32 W
Maximum Internal Capacitance Ci: 3.52 nF
Maximum Internal Inductance Li: 0 μH
*2:
Rating 2
c. ATEX Intrinsically Safe Ex ic
Caution for ATEX Intrinsically safe Ex ic
The transmitters with option code /KN26 for
potentially explosive atmospheres:
• Applicable Standard:
EN 60079-0:2009/EN 60079-0:2012,
EN 60079-11:2012
• Type of Protection and Marking Code:
II 3G Ex ic IIC T4 Gc
• Ambient Temperature: –30* to +60°C
* –15°C when /HE is specified.
• Maximum Process Temperature: 120°C
• Ambient Humidity:
0 to 100% (No condensation)
• IP Code: IP66
• Ambient pollution degree: 2
• Overvoltage category: I
Note 1. Electrical Data
Ui = 32 V
Ci = 3.52 nF
Li = 0 µH
Note 2. Installation
• All wiring shall comply with local installation
requirements. (refer to the control drawing)
• When installing the transmitter in “ic”
FISCO system or FNICO system, follow the
installation requirements of each system.
• Cable glands, adapters and/or blanking
elements shall be of Ex “n”, Ex “e” or Ex “d”
and shall be installed so as to maintain the
specified degree of protection (IP Code) of
the transmitters.
Note 3. Maintenance and Repair
• The instrument modification or parts
replacement by other than authorized
representative of Yokogawa Electric
Corporation is prohibited and will void ATEX
intrinsically safe.
Associated
Apparatus
Transmitter
Nonhazardous Area
[Control drawing]
Hazardous Area
+
–
F0203.ai
• Above drawing shows the installation of
Entity system.
When installing the transmitters in “ic”
FISCO system or FNICO system, follow the
installation requirements of each system.