7 ND90 71 en
19
Fig. 11
Control wiring, ND9000F/P, Ex ’ic’ for Zone 2 / Division 2
N
O
I
T
A
C
O
L
S
U
O
D
R
A
Z
A
H
N
O
I
T
A
C
O
L
S
U
O
D
R
A
Z
A
H
N
O
N
FISCO ’ic’
Power Supply /
Barrier
Uo (Voc) ≤ 32 V
Io (Isc) ≤ 380 mA
Po ≤ 5.32 W
ND9000F/P Valve Positioner
Fieldbus Input
X102
Ui (Vmax) = 32 V
Ii (Imax) = 380 mA
Pi (Pmax) = 5.32 W
Li = 10 uH
Ci = 5 nF
1
2
+
‐
3
SHD
Earthing
terminal
(internal)
Earthing
terminal
(external)
NOTE 1
NOTE 1
NOTE 1
Limit Switches
Ui (Vmax)
Ii (Imax)
Pi (Pmax)
Li
Ci
Ex i Barrier
Uo (Voc) ≤ Ui (Vmax)
Io (Isc) ≤ Ii (Imax)
Po ≤ Pi (Pmax)
11
13
14
16
L‐
L+
L‐
L+
12
L‐
11
13
L+
15
L‐
14
16
L+
I02, I09,
I57, I60
I45
NOTE 8
NOTE 8
NOTE 2
(SOL1)
(SOL2)
(SOL
PWR1)
(SOL
PWR2)
TOP
SW+
TOP
SW‐
BTM
SW+
BTM
SW‐
D44
11
12
13
14
15
16
17
18
L‐
L+
L‐
L+
L‐
L+
L‐
L+
I41, I58
Remote Mount
Position Sensor Interface
Uo (Voc) = 5.0 V
Io (Isc) = 17.8 mA
Po = 22.2 mW
Lo (La) = 10 uH
Co (Ca) = 10 nF
SHD
+
CNT
‐
1
2
3
4
Remote Mount
Position Sensor
Ui (Vmax) ≥ 5.0 V
Ii (Imax) ≥ 17.8 mA
Pi (Pmax) ≥ 22.2 mW
2
3
CNT
‐
1
+
NOTE 9
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 ND9000F/P
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 3 (SHD) does not have any electrical connection. If wanted, cable screen can be connected to this terminal for floating
termination of screen at ND9000F/P end (dash‐dot line). Shrink tube is 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)
Co (Ca) >= Ci + Ccable
Io (Isc) <= Ii (Imax)
Lo (La) >= Li + Lcable
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.
