Installation
July 2009
2-3
Temperature Classification:
T4 at Ta
v
80
C
T5 at Ta
v
40
C
Refer to table 1-5 for additional approval information,
figure C-4 for the ATEX loop schematic, and figure
C-5 for the ATEX nameplate.
IECEx
Conditions of Certification
Intrinsic Safety
This equipment shall be connected in accordance with
the manufacturer’s installation instructions to intrinsic
safety barriers that satisfy the following parameters for
each set of terminals.
Main 4
−
20 mA:
Ui = 30 V, Ii = 130 mA, Pi = 1W, Li = 0.55 mH,
Ci = 10.5 nF
XMTR circuit:
Ui = 28 V, Ii = 100 mA, Pi = 1W, Li = 0 mH,
Ci = 5 nF
Limit Switch 1
(LS1):
Ui = 16 V, Ii = 76 mA, Pi = 1W, Li = 0 mH,
Ci = 5 nF
Limit Switch 2
(LS2):
Ui = 16 V, Ii = 76 mA, Pi = 1W, Li = 0 mH,
Ci = 5 nF
Refer to table 1-6 for additional approval information,
figure C-6 for the IECEx loop schematic, and figure
C-7 for the IECEx nameplate.
NEPSI
Notes for Safe Use of the Certified Product
Intrinsic Safety
DVC2000 digital valve controllers (designated as
controller hereafter) have been proved to be in
conformity with the requirements specified in the
national standards GB3836.1-2000 and
GB3836.4-2000 through inspections conducted by
National Supervision and Inspection Centre for
Explosion Protection and Safety of Instrumentation
(NEPSI). The Ex marking for the products is Ex ia II
CT4/T5 and their Ex certificate number is GYJ06281.
When using the product , the user should pay
attention to the items stated below:
1. The enclosure of the controller provides a
grounding terminal, and the user should install a
reliable grounding wire connected to it when mounting
and using the controller.
2. The controller’s cable entrance (M20x1.5 or 1/2
NPT) must be fitted with a cable entry device which is
Ex-approved through inspection of explosion
protection.
3. The maximum operating ambient temperature
range of the controller is
−
20
C to +80
C, which is
related to temperature grouping as follows:
T4:
−
20
C to +80
C; T5:
−
20
C to +40
C
4. The approved parameter values for safe use with
different controller loops are as follow:
Loop Style
Ui (V)
Li (mA)
Pi (W)
Li (mH)
Ci (nF)
Primary 4 to 20mA
30
130
1
0.55
5
XMTR Input
28
100
1
0
5
Limit switch LS1
16
76
1
0
5
Limit switch LS2
16
76
1
0
5
While the controller forms an intrinsically safe
explosion protection system together with an
associated equipment, the following requirements
must be met:
Uo
v
Ui , Io
v
Ii , Po
v
Pi , Co
w
Ci + Cc , Lo
w
Li + Lc .
(Note: Where Cc and Lc represent distributing
capacitance and inductance of the connecting cable
respectively.)
5. The user must not be allowed to replace at will the
internal electric components of the product on his own
to prevent affecting performance of explosion
protection of the product.
6. The user must follow the relevant rules specified by
the product instruction manual, the “13th Section of
Electric Equipment Used in Explosive Gaseous
Environment: Maintenance of Electric Equipment Used
in Explosive Gaseous Environment” of
GB3836.13-1997 standard, the “15th Section of
Electric Equipment Used in Explosive Gaseous
Environment: Electric Installation in Hazardous
Locations (except for coal mine)” of GB3836.15-2000
standard and the “Electric installation construction and
acceptance test code for electric equipment mounting
engineering in an explosive and fire
−
hazardous
environment” of GB50257:1996 standard while
performing installation, operation, and maintenance for
the product.
Valve / Actuator Mounting
If ordered as a part of a control valve assembly, the
factory will mount the digital valve controller on the
actuator and calibrate the instrument. If you purchased
the digital valve controller separately, you will need a
mounting kit to mount the digital valve controller on the
actuator. The following procedures are general
guidelines you should consider when mounting the
digital valve controller. See the instructions that come
with the mounting kit for detailed information on
mounting the digital valve controller to a specific
actuator model.
2
Summary of Contents for Fisher FIELDVUE DVC2000
Page 40: ...DVC2000 Digital Valve Controller July 2009 3 14 3 ...
Page 70: ...DVC2000 Digital Valve Controller July 2009 6 10 6 ...
Page 71: ...Parts July 2009 7 1 7 7 Section 7 Parts Parts Ordering 7 2 Parts Kits 7 2 Parts List 7 2 7 ...
Page 80: ...DVC2000 Digital Valve Controller July 2009 A 4 A ...
Page 104: ...DVC2000 Digital Valve Controller July 2009 Index 8 C Index ...
Page 105: ......
