Specifications

10/31/02 Tech-304/DWO 14195 Page 34 of 39
Appendix E
Control Schematic for Wiring of Intrinsically safe ICoT (WD-10836)
(Sheet 1 of 4)
Entity parameters for
each field wiring
terminal pair of ICoT: Vmax = 30V Imax = 100mA
Ci = 120 pF Li = OmH
1. FMRC Entity approved associated apparatus used in an approved configuration, such that:
A. ICoT Vmax greater than or equal to Voc and Vt of associated apparatus.
B. ICoT Imax greater than or equal to Isc and It of associated apparatus.
C. Ci of ICoT + Ci of ROSEMOUNT
®
275 HART
®
COMMUNICATOR (if used) + cable capacitance less than or equal to
Ca of associated apparatus.
D. In cases where the ROSEMOUNT
®
275 HART
®
COMMUNICATOR is not connected between the associated apparatus
and the ICoT, Li of ICoT + cable inductance less than or equal to La of associated apparatus.
E. In cases where the ROSEMOUNT
®
275 HART
®
COMMUNICATOR is connected between the associated apparatus and
the ICoT, cable inductance should be determined in accordance with ROSEMOUNT
®
installation drawing 00275-0081.
2. Associated apparatus manufacturer’s installation drawing must be followed when installing this equipment.
3. In cases where the ROSEMOUNT
®
275 HART
®
COMMUNICATOR is connected between the associated apparatus and the
ICoT. ROSEMOUNT
®
installation drawing 00275-0081 must be followed when installing this equipment.
4. Control equipment connected to associated apparatus must not use or generate more than 250V.
5. To maintain intrinsic safety, each field wiring pair (4-20 mA and Analog Output) must be run in separate cables or separate
shields connected to intrinsically safe (Associated Apparatus) ground.
6. ROSEMOUNT
®
275 HART
®
COMMUNICATOR is NOT FMRC approved for use in Class II and III Hazardous Locations.
7. For Class II and III locations where rigid metal conduit is not used, seal ICoT cable entries against dust and fibers using an
appropriate NRTL listed cable gland fitting.
8. Installation should be in accordance with ANSI/ISA RP12.6 and the National Electrical Code (ANSI/NFPA 70).
9. ROSEMOUNT
®
275 HART
®
COMMUNICATOR not used with Model 4100.
ROSEMOUNT
®
275 HART
®
COMMUNICATOR-NOTES 3,6 & 9
HAZARDOUS LOCATION
CLASS I , DIV 1, GROUPS A,B,C,D
CLASS II , DIV 1, GROUPS E,F,G
CLASS III , DIV 1
ICoT SERIES
POSITIONER
NOTE 5
CONTROL
EQUIPMENT
NOTE 4
ASSOCIATED APPARATUS
(INTRINSIC SAFETY
BARRIERS) NOTES 1 & 2
NONHAZARDOUS LOCATION
4-20mA
ANALOG
OUTPUT
REMOTE HALL EFFECT SENSOR
(OPTIONAL) No. 5 IN 4TH
DIGIT OF PART NUMBER. 50 FT
MAX. LENGTH, 5 CONDUCTOR 22
AWG CABLE PROVIDED WITH
OPTION
JP5