27
<Read Me First>
IM 01W02E01-11EN
NOTE
• The equipment must be installed in accordance with EN 60079-14 and local electrical
codes.
• The equipment must be installed in accordance with the user’s manual.
• The thread type of the cable entries must be confirmed according to the user’s manual.
• Screws of power supply terminals must be tightened with specified torque values: 1.2 Nm to
1.4 Nm.
• Cable glands and adapters must be of Ex “d” for Ex “d” installations.
• The antenna and the surge arrester are simple apparatus.
• The temperature class of Antenna and Arrestor must be determined in accordance with EN
60079-14, using Po = 100 mW for ISA antenna connector, and Po = 130 mW for WLAN1/
WLAN2 antenna connector.
• The following conditions must be met for the connections to ISA, WLAN1, and WLAN2.
(total Li of simple apparatuses) + (total Lc) ≤ 0.5 mH
(total Ci of simple apparatuses) + (total Cc) ≤ 0.09 μF
• The equipment must be earthed in accordance with EN 60079-14, in order to maintain
intrinsic safety. A cable lug or a similar device must be used to maintain the secureness of
the connection to the equipment. Care must be taken to avoid multi-point earthing since the
equipment is not galvanically isolated from the power supply.
• In order to prevent the earthing conductor from loosening, the conductor must be secured
to the terminal, tightening the screw with appropriate torque. Care must be taken not to twist
the conductor.
• The antenna, arrester provided with YFGW510 are simple apparatus in accordance with EN
60079-11.
• They are passive components and their internal inductance and capacitance are
negligible regarding intrinsically safe installation.
• They do not contain any voltage and/or current-limiting devices.
• They do not contain any means of increasing voltage or current, such as DC-DC
converters.
• They are not separated from the earth and must earthed together with YFGW510 in
accordance with EN 60079-14.
• They have metallic enclosures and no risk for electrostatic discharges.
• As for the temperature class, they are classified as T4 for Ta ≤ 65 °C, since the power
applied to them is ≤ 130 mW and their surface area is > 20 mm
2
.
• Lc of the provided cable is 0.21μH/m.
• Cc of the provided cable is 83 pF/m.
