Fisher FIELDVUE DVC6200 Instruction Manual page 102

DVC6200 Digital Valve Controller
NOTES:
THE ENTITY CONCEPT ALLOWS INTERCONNECTION OF INTRINSICALLY SAFE APPARATUS TO ASSOCIATED APPARATUS NOT SPECIFICALLY EXAMINED IN SUCH
1
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
3 INSTALLATION MUST BE IN ACCORDANCE WITH THE NATIONAL WIRING PRACTICES OF THE COUNTRY IN USE
4 LOOPS MUST BE CONNECTED ACCORDING TO THE BARRIER MANUFACTURER'S INSTRUCTIONS
5
IF HAND-HELD COMMUNICATOR OR MULTIPLEXER IS USED IT MUST BE IECEx APPROVED WITH ENTITY PARAMETERS AND INSTALLED PER THE MANUFACTURERS
CONTROL DRAWING
GE42990
Sheet 2 and 8 of 8
B
94
HAZARDOUS LOCATION
ZONE 0, Ex ia IIC
DVC6200
Vmax = 30 VDC
Imax = 226 mA
Ci = 5 nF
Li = 0.55 mH
Pi = 1.4
Imax or Ii  Isc or Io Pmax or Pi  Po
Figure B-5. IECEx Loop Schematic
Figure B-6. IECEx Nameplates
NON-HAZARDOUS LOCATION
IECEx APPROVED BARRIER
NOTE 5
Ci + Ccable  Ca Li + Lcable  La
NOTE 1, 3, 4
LABEL FOR NATURAL GAS
CERTIFIED TERMINAL BOX
September 2010