DVC6000 Digital Valve Controllers
September 2013
B-10
GE42990 Sheet 8
THE ENTITY CONCEPT ALLOWS INTERCONNECTION OF INTRINSICALLY SAFE APPARATUS TO ASSOCIATED APPARATUS NOT
SPECIFICALLY EXAMINED IN SUCH COMBINATION. THE CRITERIA FOR INTERCONNECTION IS THAT THE VOLTAGE (Vmax or Ui), THE
CURRENT (Imax or Ii), AND THE POWER (Pmax or Pi) OF THE INTRINSICALLY SAFE APPARATUS MUST BE EQUAL TO OR GREATER
THAN THE VOLTAGE (Voc OR Uo), AND THE CURRENT (Isc or Io), AND THE POWER (Po) DEFINED BY THE ASSOCIATED APPARATUS. IN
ADDITION, THE SUM OF THE MAX UNPROTECTED CAPACITANCE (Ci) AND MAX UNPROTECTED INDUCTANCE (Li), INCLUDING THE
INTERCONNECTING CABLING CAPACITANCE (Ccable) AND CABLING INDUCTANCE (Lcable) MUST BE LESS THAN THE ALLOWABLE
CAPACITANCE (Ca) AND INDUCTANCE (La) DEFINED BY THE ASSOCIATED APPARATUS. IF THE ABOVE CRITERIA IS MET, THEN THE
COMBINATION MAY BE CONNECTED.
Vmax or Ui Voc or Uo Imax or Ii Isc or Io Pmax or Pi Po Ci + Ccable ≤ Ca Li + Lcable ≤ La
INSTALLATION MUST BE IN ACCORDANCE WITH THE NATIONAL WIRING PRACTICES OF THE COUNTRY IN USE
LOOPS MUST BE CONNECTED ACCORDING TO THE BARRIER MANUFACTURER’S INSTRUCTIONS
IF HAND-HELD COMMUNICATOR OR MULTIPLEXER IS USED IT MUST BE IECEx APPROVED WITH ENTITY PARAMETERS AND
INSTALLED PER THE MANUFACTURERS CONTROL DRAWING
Figure B-18. Notes for IECEx Schematics
Figure B-19. Typical IECEx Nameplate for FIELDVUE DVC6010, DVC6020, DVC6030, and DVC6005
Figure B-20. Typical IECEx Nameplate for DVC6015, DVC6025, and DVC6035
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