Dover OPW SiteSentinel iTouch M1500 - Appendix L - Itouch Control Drawing

Doc. No.: M1500 Rev. 5
Page 121 of 127
• 67733 Gross Point Road 900 Santa Fe Dr.
Doc. No.: M1500, Rev. 5
Page 121 of 127
67733 Gross Point Road 900 Santa Fe Dr.Doc. No.:
M1500, Rev. 5
Page 121 of 127
• 67733 Gross Point Road 900 Santa Fe Dr.
•
Appendix L - iTouch Control Drawing
NOTES:
1. Associated Apparatus Entity Parameters: Group /IA:
Uo=14.85Vdc
Io=305mA
Po=974mW
Co=3.0uF, Lo = 1.52mH
or
Co=5.0uF, Lo = 600uH
2. The voltage current of this associated apparatus is limited by a resistor such that the output voltage-
current plot is a straight line drawn between open-circuit voltage and short-circuit current.
3. Selected intrinsically safe apparatus must be ATEX and/or IECEx Certified as intrinsically safe for the
application and have intrinsically safe entity parameters conforming with the following:
TABLE 1 Group IIA
I.S. EQUIPMENT
ASSOCIATED APPARATUS
Ui
≥
Uo= 14.85V
Ii
≥
Io = 305mA
Pi
≥
Po = 974mW
Ci + Ccable
-or-
Ci + Ccable
≤
≤
Co = 3.0uF, Li + Lcable </= Lo = 1.52mH
Co = 5.0uF, Li + Lcable </= Lo = 600uH
4. This associated apparatus may also be connected to simple apparatus as defined in Clause 5.7 of
IEC60079-11:2012 and or EN60079-11:2012 and installed in accordance with applicable local codes.
5. Capacitance and inductance of the field wiring from the intrinsically safe equipment to the associated
apparatus shall be calculated and must be included in the system calculations as shown in Table 1.
Cable capacitance, Ccable, plus intrinsically safe equipment capacitance, Ci must be less than the
marked capacitance, Co, shown on any associated apparatus used. The same applies for inductance
(Lcable, Li, Lo, respectively. Where the cable capacitance and inductance per foot are not known, the
following values shall be used: Ccab/e = 197pF/m., Lcable = 0.66uH/m.
6. The associated apparatus must be connected to a suitable ground electrode or other local installation
codes, as applicable. The resistance of the ground path must be less than 1 ohm.
7. Where multiple circuits extend from the same piece of associated apparatus, they must be installed in
separate cables or in one cable having suitable insulation.
8. Intrinsically safe circuits must be wired and separated in accordance with applicable local codes.
9. This associated apparatus has not been evaluated for use in combination with another associated
apparatus.