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7 ND90 71 en
N
O
N
H
A
Z
A
R
D
O
U
S
L
O
C
A
T
O I
N
Ex i Barrier
Uo (Voc) ≤ 28 V
Io (Isc) ≤ 120 mA
Po ≤ 1 W
NOTE 1
NOTE 1
Ex i Barrier
Uo (Voc) ≤ 28 V
Io (Isc) ≤ 120 mA
Po ≤ 1 W
NOTE 1
Ex i Barrier
NOTE 8
Uo (Voc) ≤ Ui (Vmax)
Io (Isc) ≤ Ii (Imax)
Po ≤ Pi (Pmax)
Notes
1.
By default, the screen of the cable is connected to earth either at the barrier (dotted line) or at the earthing terminal inside ND9000H enclosure
(dash line). If the screen is connected to earth at both ends of the cable, the potential equalization of the system shall conform to requirements
of IEC 60079‐14:2013 Clause 16.2.3.
2.
X102 terminal 1 (SHD) does not have any electrical connection. If wanted, cable screens can be connected to this terminal for floating
termination of screen at ND9000H end (dash‐dot line). Shrink tubes are recommended to avoid short circuits.
3.
For installation in accordance with this figure, the intrinsically safe barrier must be certified by an accredited agency.
4.
The following conditions must be satisfied:
Uo (Voc) <= Ui (Vmax)
Io (Isc) <= Ii (Imax)
Po <= Pi (Pmax)
5.
Maximum non‐hazardous area voltage must not exceed 250 V.
6.
Canadian installations should be in accordance with Canadian Electrical Code, Part I. U.S. installations should be in accordance with Article 504
in the National Electrical Code, ANSI/NFPA 70.
7.
See user manual for installation conditions.
8.
See documents F41446 and F41476 for the approved switches and their entity parameters.
9.
Remote Mount (option ‐R) is only available for ND91_ (standard enclosure) variants.
Fig. 9
Control wiring, ND9000H and ND7000H, Ex i
H
A
Z
A
R
D
O
ND9000H Valve Positioner
Position Transmitter
X300
+
1
‐
2
NOTE 1
Earthing
NOTE 2
terminal
Analog mA Input
(internal)
X102
NOTE 1
1
SHD
+
2
‐
3
Remote Mount
Earthing
Position Sensor Interface
terminal
(external)
Uo (Voc) = 3.53 V
Io (Isc) = 12.6 mA
Po = 11.1 mW
Lo (La) = 10 uH
Co (Ca) = 10 nF
Limit Switches
I02, I09,
I41, I58
I57, I60
11
L‐
11
13
L+
12
14
L‐
13
16
L+
14
15
16
17
18
Co (Ca) >= Ci + Ccable
Lo (La) >= Li + Lcable
U
S
L
O
C
A
T
O I
N
Ui (Vmax) = 28 V
Ii (Imax) = 120 mA
Pi (Pmax) = 1 W
Li = 53 uH
Ci = 22 nF
Ui (Vmax) = 28 V
Ii (Imax) = 120 mA
Pi (Pmax) = 1 W
Li = 53 uH
Ci = 22 nF
NOTE 9
SHD
1
+
2
3
CNT
‐
4
I45
D44
L‐
11
L‐
(SOL1)
L+
12
NOTE 8
(SOL2)
13
L+
(SOL
Ui (Vmax)
L‐
PWR1)
Ii (Imax)
(SOL
L+
14
L‐
PWR2)
Pi (Pmax)
15
TOP
Li
L‐
SW+
16
L+
Ci
TOP
L+
SW‐
BTM
L‐
SW+
BTM
L+
SW‐
17
Remote Mount
Position Sensor
+
1
Ui (Vmax) ≥ 3.53 V
Ii (Imax) ≥ 12.6 mA
2
CNT
Pi (Pmax) ≥ 11.1 mW
‐
3
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