Orion-instruments Jupiter 2xx FOUNDATION Fieldbus Manuel d'utilisateur télécharger pdf (Page 24)

57-649 Jupiter Magnetostrictive Transmitter - FOUNDATION fieldbus™

5.1.3 FF Segment Checklist

There can be several reasons for a FOUNDATION fieldbus

™

installation to be in a faulty condition. In order to assure

that communication can be established, the following

requirements must be met.

• Device supply voltage must be higher than 9 VDC with a

maximum of 32 VDC.

• Total current draw of a given segment cannot exceed the

rating shown on the power conditioner and/or barrier.

• Two 100 Ω, 1 µF terminators must be connected to the

network—one at each end of the segment.

• Cable length plus spur length must not exceed the following

values:

• The cable shield is to be hard grounded only at one point

close to the DCS. In addition, the cable shield can be

capacitively grounded in multiple places to improve EMC

protection.

5.2 Agency Specifications/Drawing

5.2.1 Agency Specifications – Explosion Proof Installation

Factory Sealed: This product has been approved by Factory

Mutual Research (FM) and Canadian Standards Association

(CSA) as a Factory Sealed device.

NOTE: Factory Sealed: No Explosion Proof conduit fitting (EY seal) is

required within 18" of the transmitter. However, an Explosion

Proof conduit fitting (EY seal) is required between the haz-

ardous and safe areas.

Caution: Grounding (+) will cause faulty operation, but will not cause

permanent damage.

5.2.2 Agency specifications ATEX Intrinsically safe

Entity parameters Fieldbus Fisco:

Ui = 17.5V Ii=380mA Pi = 5.32W Ci = 0.705 nF Li = 3µH

Number of Spurs 1 Device 2 Devices 3 Devices 4 Devices

25–32 — — — —

19–24 100 ft. (30 m) — — —

15–18 200 ft. (60 m) 100 ft. (30 m) — —

13–14 300 ft. (90 m) 200 ft. (60 m) 100 ft. (30 m) —

1–12 400 ft. (120 m) 300 ft. (90 m) 200 ft. (60 m) 100 ft. (30 m)

Pair Shield Twisted Size Length Type

Single Yes Yes AWG 18 (0.8 mm2) 6,200 ft. (1,900 m) A

Multi Yes Yes AWG 22 (0.32 mm2) 3,900 ft. (1,200 m) B

Multi No Yes AWG 26 (0.13 mm2) 1,300 ft. (400 m) C

Multi Yes No AWG 16 (1.25 mm2) 650 ft. (200 m) D

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 30 31 32

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Orion-instruments Jupiter 2xx FOUNDATION Fieldbus Manuel d'utilisateur Page 24

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