Fisher IM Supplement: FM Hazardous Area Approvals-FIELDVUE DVC2000 Digital Valve Controller | Fisher Manuals & Guides
Instruction Manual Supplement
D104225X012
DVC2000 Digital Valve Controller
July 2017
FM Hazardous Area Approvals
™
Fisher
FIELDVUE™ DVC2000 Digital Valve
Controller
Hazardous Area Classifications and Special Instructions for “Safe
Use” and Installations in Hazardous Locations
Certain nameplates may carry more than one approval, and each approval may have unique installation/wiring
requirements and/or conditions of “safe use”. These special instructions for “safe use” are in addition to, and may
override, the standard installation procedures. Special instructions are listed by approval.
Note
This information supplements the nameplate markings affixed to the product and the DVC2000 quick start guide (D103203X012
and instruction manual (D103176X012
Always refer to the nameplate itself to identify the appropriate certification.
), available from your Emerson sales office, Local Business Partner, or Fisher.com.
)
WARNING
Failure to follow these conditions of “safe use” could result in personal injury or property damage from fire or explosion, or
area re‐classification.
Special Conditions of Use
Intrinsically Safe, Non‐Incendive
The apparatus enclosure contains aluminum and is considered to constitute a potential risk of ignition by impact or
friction. Care must be taken into account during installation and use to prevent impact or friction.
Refer to figure 1 for a typical DVC2000 FM approval nameplate and figure 2 for installation drawing GE10683.
www.Fisher.com
DVC2000 Digital Valve Controller
July 2017
Figure 1. Typical FM Nameplate
Figure 2. FM Installation Drawing GE10683
INSTALLATION MUST BE IN ACCORDANCE WITH THE NATIONAL ELECTRICAL CODE (NEC)
AND ANSI/ISA RP12.6.
BARRIERS MUST BE CONNECTED PER MANUFACTURER'S INSTALLATION INSTRUCTIONS.
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) AND THE CURRENT (Imax) OF THE INTRINSICALLY SAFE
APPARATUS MUST BE EQUAL TO OR GREATER THAN THE VOLTAGE (Voc) AND
CURRENT (Isc) 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 (Ca) AND
INDUCTANCE (La) DEFINED BY THE ASSOCIATED APPARATUS. IF THESE
CRITERIA ARE MET, THEN THE COMBINATION MAY BE CONNECTED.
CLASS I, DIV. 1, GROUPS A,B,C,D
CLASS I ZONE 0 Aex ia IIC
FORMULAS - Vmax > Voc, or Vt, Ci + Ccable < Ca, Pi > Po, or Pt
Imax > Isc, or It, Li + Lcable < La
ENTITY PARAMETERS FOR EACH I.S. CIRCUIT ARE AS FOLLOWS:
CIRCUIT
XMTR
MAIN
LS1
LS2
VMax (Ui)
28Vdc
30Vdc
16Vdc
16Vdc
IMAX(Ii)
100mA
130mA
76mA
76mA
Ci
5nF
10.5nF
5nF
5nF
Li
0 mH
0.55 mH
0 mH
0 mH
PMAX
1W
1W
1W
1W
WHERE MULTIPLE IS CIRCUITS ARE USED:
S EACH I.S. CIRCUIT MUST BE SHIELDED TWISTED PAIR CABLE.
S I.S. CIRCUITS MUST ENTER ENCLOSURE VIA CONDUIT ENTRIES
AS SPECIFIED IN DETAIL 1.
S CABLE INSULATION AND SHIELD MUST EXTEND TO WITHIN PARTITIONED
AREA (SEE DETAIL 1).
S XMTR, LS1, AND LS2 CIRCUITS ARE OPTIONAL.
CLASS I, DIV 2 APPLICATIONS MUST BE INSTALLED AS SPECIFIED IN NEC ARTICLE 501‐4(B).
EQUIPMENT AND FIELD WIRING IS NON‐INCENDIVE WHEN CONNECTED TO APPROVED
BARRIERS WITH ENTITY PARAMETERS.
MAXIMUM SAFE AREA VOLTAGE SHOULD NOT EXCEED 250 Vrms.
RESISTANCE BETWEEN BARRIER GROUND AND EARTH GROUND MUST BE LESS THAN ONE OHM.
IF HAND‐HELD COMMUNICATOR OR MULTIPLEXOR IS USED, IT MUST BE FM APPROVED
WITH ENTITY PARAMETERS AND INSTALLED PER THE MANUFACTURER'S CONTROL DRAWING.
GE10683‐D
THE APPARATUS ENCLOSURE CONTAINS ALUMINUM
AND IS CONSIDERED TO CONSTITUTE A POTENTIAL
RISK OF IGNTION BY IMPACT OR FRICTION. CARE
MUST BE TAKEN DURING INSTALLATION AND USE TO
PREVENT IMPACT OR FRICTION.
HAZARDOUS LOCATION NON‐HAZARDOUS LOCATION
DVC2000
Instruction Manual Supplement
D104225X012
WARNING
XMTR
MAIN
LS1
LS2
DETAIL 1
FM APPROVED
BARRIER
FM APPROVED
BARRIER
FM APPROVED
BARRIER
FM APPROVED
BARRIER
XMTR
MAIN
LS1
LS2
PARTITIONED AREA
2
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