DVC2000 Digital Valve Controller
July 2009
C-4
GE14581
1
2
INSTALLATION MUST BE IN ACCORDANCE WITH THE NATIONAL WIRING PRACTICES OF THE COUNTRY IN USE.
BARRIERS MUST BE CONNECTED PER MANUFACTURER’S INSTALLATION INSTRUCTIONS.
3
INTRINSICALLY SAFE APPARATUS MAY BE CONNECTED TO ASSOCIATED
APPARATUS NOT SPECIFICALLY EXAMINED IN SUCH COMBINATION. THE CRITERIA
FOR INTERCONNECTION IS THAT THE VOLTAGE (Ui) AND THE CURRENT (Ii) OF THE
INTRINSICALLY SAFE APPARATUS MUST BE EQUAL TO OR GREATER THAN THE
VOLTAGE (Uo) AND CURRENT (Io) DEFINED BY THE ASSOCIATED APPARATUS. IN
ADDITION, THE SUM OF THE MAXIMUM UNPROTECTED CAPACITANCE (Ci) AND
INDUCTANCE (Li) OF EACH INTRINSICALLY SAFE APPARATUS, AND THE
INTERCONNECTING WIRING, MUST BE LESS THAN THE ALLOWABLE CAPACITANCE (Co)
AND INDUCTANCE (Lo) DEFINED BY THE ASSOCIATED APPARATUS. IF THESE
CRITERIA ARE MET, THEN THE COMBINATION MAY BE CONNECTED.
FORMULAS UI > Uo
Ii > Io
Ci + Ccable < Co
Li + Lcable < Lo
Pi > Po
4
ENTITY PARAMETERS FOR EACH I.S. CIRCUIT ARE AS FOLLOWS:
CIRCUIT V
MAX
(Ui) I
MAX
(Ii) Ci Li P
MAX
XMTR
MAIN
LS1
LS2
100mA
130mA
76mA
76mA
28Vdc
30Vdc
16Vdc
16Vdc
0 mH
0.55 mH
0 mH
0 mH
1W
1W
1W
1W
5nF
10.5nF
5nF
5nF
5
WHERE MULTIPLE IS CIRCUITS ARE USED:
EACH I.S. CIRCUIT MUST BE SHIELDED TWISTED PAIR CABLE.
I.S. CIRCUITS MUST ENTER ENCLOSURE VIA CONDUIT ENTRIES
AS SPECIFIED IN DETAIL 1.
CABLE INSULATION AND SHIELD MUST EXTEND TO WITHIN PARTITIONED
AREA (SEE DETAIL 1).
XMTR, LS1, AND LS2 CIRCUITS ARE OPTIONAL.
6
IF HAND-HELD COMMUNICATOR OR MULTIPLEXOR IS USED, IT MUST BE APPROVED
WITH ENTITY PARAMETERS AND INSTALLED PER THE MANUFACTURER’S CONTROL DRAWING.
RESISTANCE BETWEEN BARRIER GROUND AND EARTH GROUND MUST BE LESS THAN ONE OHM.
7
HAZARDOUS LOCATION NON-HAZARDOUS LOCATION
ZONE 0, GROUP IIC
DVC2000
XMTR
MAIN
LS1
LS2
I.S. APPROVED
BARRIER
I.S. APPROVED
BARRIER
I.S. APPROVED
BARRIER
I.S. APPROVED
BARRIER
XMTR
MAIN
LS1
LS2
PARTITIONED AREA
DETAIL 1
Figure C-6. IECEx Loop Schematic
Figure C-7. IECEx Nameplate
C
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