<2. Notes on Handling>
2-12
IM 01W03D02-01EN
(3) Maintenance and repair
WARNING
The instrument modification or parts replacement
by other than an authorized Representative of
Yokogawa Electric Corporation is prohibited and
will void the certification.
• A modification of the equipment would
no longer comply with the construction
described in the certificate documentation.
• Only personnel authorized by Yokogawa
Electric Corporation can repair the
equipment
• USE ONLY YOKOGAWA BATTERY PACK
F9090FC or F9090GC
• THE BATTERY PACK CAN BE REPLACED
IN A HAZARDOUS LOCATION. THE
BATTERY PACK HAS SURFACE
RESISTIVITY GREATER THAN 1G OHM
AND MUST BE PROPERLY INSTALLED IN
THE ENCLOSURE OF THE EQUIPMENT.
CARE MUST BE TAKEN DURING
TRANSPORTATION TO AND FROM THE
POINT OF INSTALLATION TO PREVENT
ELECTROSTATIC CHARGE BUILD-UP
• CELLS MUST BE CHANGED IN A NON-
HAZARDOUS AREA ONLY
• SUBSTITUTION OF COMPONENTS MAY
IMPAIR INTRINSIC SAFETY
(4) Name Plate
• Name Plate
F0209.ai
• Name Plate for intrinsically safe type
F0210.ai
2.6.4 IECEx Certification
(1) Technical Data
Caution for IECEx Intrinsically safe type.
Note 1. Model FN310 Field Wireless Multi-Protocol
Module (RS485 Modbus Protocol) with
optional code /SS27 for potentially
explosive atmospheres:
• Certificate number: IECEx FMG 15.0042X
• Applicable Standards:
IEC60079-0, IEC60079-11, IEC60079-28
• Type of Protection and Marking code:
Ex ia op is [ia IIC Ga] IIB T4 Ga
• Enclosure:
IP66 in accordance with only IEC 60529
• Ambient Temperature:
–40 to 70°C (–40 to 158°F)
• Signals
Terminals: RS485 Modbus communication
Connector: RS485 Communication
• Dielectric strength
Dielectric strength≥ 500 V AC, r.m.s.,1 min
Note 2. Electrical Parameters
(Refer to the Control Drawing)
Note 3. Installation
• Installation should be in accordance with
local installation requirements.
(Refer to the Control Drawing)
[Control Drawing, IFM045-A86 for IECEx
Certification]
F0211.ai
4
5
3
2
1
1
2
3
4
5
6
Wireless
Communication
Connector
Terminal
Sensor
Input
Not used
Hazardous Area
Group IIC
Hazardous Area
Group IIB
Hazardous Area
Group IIC
Ui
≥
Uo
Ii
≥
Io
Pi
≥
Po
Ci
≤
Co - Ccable
Li
≤
Lo - Lcable
Ui
≥
Uo
Ii
≥
Io
Pi
≥
Po
Ci, Li: See *1
Wireless Communication
(Connector)
Uo :
5.88 V
Io :
483 mA
Po :
779 mW
Co :
5.82 µF
Lo :
25 µH
Sensor Input
(Terminal 1 to 4)
Uo :
5.88 V
Io :
145 mA
Po :
213 mW
Co :
43 µF
Lo :
1.6 mH
FN310
Field Wireless
Multi-Protocol Module
(Modbus)
Intrinsically Safe
Apparatus (1)
Terminal
Intrinsically Safe Apparatus (2)
Not used
*1 As allowable connection values of an Intrinsically Safe
Apparatus (2), the following conditions of (a) or (b) must
be satisfied.
(a) {( Li × 100 ≤ Lo) or (Ci × 100 ≤ Co)} and {Li ≤ (Lo -
Lcable) and Ci ≤ (Co - Ccable)}
(b) { Li ≤ (Lo / 2 - Lcable) and Ci ≤ (Co / 2 - Ccable)}
and [{(Ci + Ccable) ≤ 600 nF for Group IIC} or {(Ci +
Ccable) ≤ 1μF for Group IIA, IIB}]
