DCS ADR24 Operations Instructions Page 37
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VEGASON 51P … 53P 37
Electrical connection
In the so-called Fieldbus Intrinsically Safe
Concept (FISCO) the general conditions for
an Ex safe bus configuration have been laid
down. Therein, the participants and the bus
cables with their respective elec. data have
been determined, so that the linking of these
components always meets the Ex require-
ments. The more time-consuming Ex calcula-
tion normally required is therefore not
necessary. Build your Ex bus according to
the IEC standard 1158-2.
The Ex segment coupler delivers a controlled
power supply to the PA bus. All other compo-
nents (field instruments and bus terminators)
are only consumers. A field instrument must
consume at least 10 mA. Ideally, an individual
sensor should not consume more than 10 mA
so that the number of instruments can be as
large as possible.
VEGA PA sensors, whether Ex or non Ex,
consume a constant current of 10 mA. Ac-
cording to the Profibus specification, this is
the minimum participant current. With VEGA
sensors it is therefore possible to connect 10
sensors (also in Ex environment) even with a
limited energy supply from the Ex segment
couplers.
Watch out for potential losses
Due to potential losses, earthing on both
sides without potential equalisation system is
not allowed in Ex applications. If an instru-
ment is used in hazardous areas, the re-
quired regulations, conformity and type
approval certificates for systems in Ex areas
must be noted (e.g. DIN 0165). Please also
note the approval documents with the safety
data sheet attached to the Ex sensors.
Electrical data of the cables
R
DC
No. of A in Z
31.25kHz
C in Damping Screen
cores mm
2
nF/km
SINEC 6XV1 44 W/km 2 0.75 100 W < 90 < 3 dB/km Cu-braiding
830-5AH10 +/- 20 W 39 kHz
(Siemens)
SINEC L26XV1 44 W/km 2 0.75 100 W < 90 < 3 dB/km Cu-braiding
830-35H10 +/- 20 W 39 kHz
(Siemens)
3079A 105 W/km 2 0.32 150 W 29.5 < 3 dB/km foil
(Belden) 39 kHz
- Operating Instructions 1
- Contents 2
- Safety information 3
- Note Ex area 3
- 1 Product description 4
- 1.2 Application features 5
- 1.3 Profibus output signal 5
- 1.4 Adjustment 6
- VEGASON 51P … 53P 7 7
- 8 VEGASON 51P … 53P 8
- Product description 9
- Meas. environment 10
- 2 Types and Profibus 11
- Type code 12
- 2.2 Bus configuration 13
- 14 VEGASON 51P … 53P 14
- 1 … 32 sensors 15
- 3 Technical data 16
- VEGASON 51P … 53P 17 17
- 18 VEGASON 51P … 53P 18
- 3.2 Approvals 19
- 20 VEGASON 51P … 53P 20
- 3.4 Dimensions 21
- Adjustment module MINICOM 22
- VEGASON 53 22
- 4 Mounting and installation 23
- 24 VEGASON 51P … 53P 24
- Dished tank ceiling 25
- Open vessels 25
- Meas. range 26
- Mounting boss 27
- Material heaps 27
- Socket extension in liquids 28
- Socket extension in solids 28
- Khafagi-Venturi flume 29
- 4.6 False echoes 30
- Strong turbulence 31
- Inflowing material 31
- Filtering out of a ledge echo 31
- 4.7 Incorrect mounting 32
- VEGASON 51P … 53P 33 33
- Socket piece too long 34
- 5 Electrical connection 35
- Screening 36
- Profibus PA in Ex environment 36
- VEGASON 51P … 53P 37 37
- 5.2 Sensor address 38
- Software addressing 39
- 5.3 Connection of the sensor 40
- VEGASON 51P … 53P 41 41
- 6.1 Adjustment media 42
- 6.2 Adjustment with VVO 43
- 44 VEGASON 51P … 53P 44
- VVO will shut down and Win 45
- must be restarted 45
- Configuration 46
- Parameter adjustment 1 47
- 48 VEGASON 51P … 53P 48
- VEGASON 51P … 53P 49 49
- 50 VEGASON 51P … 53P 50
- VEGASON 51P … 53P 51 51
- Sensor optimisation 52
- Operating range 52
- VEGASON 51P … 53P 53 53
- Echo curve 54
- VEGASON 51P … 53P 55 55
- Parameter adjustment 2 56
- VEGASON 51P … 53P 57 57
- Linearisation -- user 58
- VEGASON 51P … 53P 59 59
- Tank calculation 60
- "All dimensions are 60
- VEGASON 51P … 53P 61 61
- Display of measured value 62
- Simulation of outputs 63
- Services/Backup/Signal 64
- Services/ 64
- Backup/Sensors 64
- Adjustment steps 65
- 1. Address 65
- Adjustment 66
- VEGASON 51P … 53P 67 67
- 68 VEGASON 51P … 53P 68
- VEGASON 51P … 53P 69 69
- 70 VEGASON 51P … 53P 70
- VEGASON 51P … 53P 71 71
- 7 Diagnostics 72
- 8.1 Parameter listing 73
- 8.2 Function diagram 78
- Transducer 79
- Simulate value 80
- Function 81
- 82 VEGASON 51P … 53P 82
- VEGASON 51P … 53P 83 83
- ISO 9001 84
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