Rockwell-automation 1797-IE8NF FLEX Ex 8 Input Analog, HART and Noise Manuel d'utilisateur télécharger pdf (Page 50)

50 FLEX Ex 8 Input Analog, HART, and Noise Filter Analog Modules

Publication

1797-5.5 - September 2011

Flexbus Entity Values for This Module

Any combination of up to eight FLEX Ex I/O modules may be attached on a

flexbus.

 The entity concept allows interconnection of intrinsically safe apparatus

with associated apparatus not specifically examined in combination as a

system when the approved values of V

and I

or V

and I

of the associated

apparatus are less than or equal to V

max

and I

max

of the intrinsically safe

apparatus and the approved values of C

and L

of the associated apparatus

are greater than C

+ C

cable

and L

+ L

cable

respectively for the intrinsically safe

apparatus.

 Simple apparatus is defined as a device which neither generates nor stores

more than 1.2V, 0.1 A, 20 μJ, or 25 mW.

 Wiring methods must be in accordance with the National Electric Code,

ANSI/NFPA 70, Article 504 and 505. For additional information refer to

ANSI/ISA RP12.6.

 This module, 1797-IE8, 1797-IE8H, or 1797-IE8NF must be used with

terminal base 1797-TB3 or 1797-TB3S.

 Terminals 3, 7, 11, 15, 20, 24, 28, 32, 36-39, and 46 to 49 shall not be

connected.

 WARNING: Substitution of components may impair intrinsic safety.

Terminals V

(V) I

(mA) Groups C

(μF) L

(μH)

Female Bus

Connector

5.8 400 A…D 3.0 3.0

IMPORTANT

For detailed certification information, refer to the FLEX

Ex System Certification Reference Manual, publication

1797-6.5.6.

1 2 ... 45 46 47 48 49 50 51 52

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Rockwell-automation 1797-IE8NF FLEX Ex 8 Input Analog, HART and Noise Manuel d'utilisateur Page 50

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