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50
Special installations
- Combined inductances and capacitances of the complete multi-
plexer circuit shall never exceed the following ratings:
L
[mH] 1.00 0.50 0.20 0.10 0.05 0.02
0
C
[µF] 0.50 0.59 0.75 0.92 1.00 1.00
0
- Impedances of the input line (Master_Line) and the output line
(Next_Mux)are effectively connected through each multiplexer.
This shall be respected for the assessment of the complete sys-
tem. Impedances connected to each of the sensor-output and the
sensor-input circuits are effectively separated.
- Overview (electrical data):
Master_Line
Typ VIB 8.306--Ex--
Next_Mux
Typ VIB 8.306--Ex--
Sensor Vibration
Typ VIB 8.314--Ex--
Sensor Rotation
Typ VIB 8.313--Ex--
Sensor Temperature
Typ VIB 8.310--Ex--
5. Wiring to the HAZARDOUS AREAS EQUIPOTENTIAL BONDING SYS-
TEM:
- For reasons of noise suppression, a line resistor of <120 mOhm is
recommended (120mOhm = 1.5qmm/10m cable length).
- Moreover, the safety regulations of personnel, goods, ... with res-
pect of lightning, explosion, electricity and, if necessary, any other
regulations of the respective customers, trade union, insurers,
country, confederation, etc. must be taken into account.
- The respective installation regulations regarding the safety of the
type of connection must also be followed here. Consequently, this
must be performed by an authorized specialist there who is insu-
red to do so.
6. Triaxial cable
•
When using triaxial cables, the outer shield of the triaxial cable is:
•
Connected to the HAZARDOUS AREAS EQUIPOTENTIAL BOND-
ING SYSTEM at the limiting device (PA).
•
Connected to the MUX housing for the MUX outputs (Next_
Mux).
•
Not connected to the MUX input (Master_Line) and for the
sensor, but reliably insulated instead (under shrinkage tube
or insulating cap, 5mm gap to the TNC plug.)
•
Not connected to the metal housing at the junction box (VIB
6.770/13), but reliably insulated instead (or the metal hous-
ing should be insulated by shrinkage tube).
•
Cable interconnections must be insulated by shrinkage tube
or insulating cap
U
= 13 V
C
= 17.33 nF
i
I
= 18 mA
i
L
= 0 µH
i
P
= 240 mW
i
i
U
= 13 V
C
= 17.33 nF
0
I
= 18 mA
i
L
= 0 µH
0
P
= 240 mW
i
0
U
= 13 V
C
= 0 nF
0
I
= 18 mA
i
L
= 0 µH
0
P
= 240 mW
i
0
U
= 13 V
C
= 11 nF
0
i
I
= 18 mA
(output)
0
P
= 240 mW
L
= 0 µH
0
i
U
= 3.6 V
C
= 0 nF
0
I
= 18 mA
i
L
= 0 µH
0
P
= 65 mW
i
0
C
L
: see above
0,
o
C
L
: see above
0,
o
C
= 25 nF
0
L
= 30 µH
0
C
= 110 nF
0
L
= 120 µH
0
C
= 3 nF
0
L
= 10 µH
0
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