Rockwell-automation T7420A_AF ICS Regent+Plus Analog Input Modules 60H Manual de usuario descargar pdf (Pagina 29)

Analog Input Modules

(T7420A, AF)

7023

Mar

Miscellaneous Input Circuit Specifications

Function

Signal

Mode

Value

I leakage

AI1 through AI16

—

50 nanoA (max.)

Rin (re AGND)

AI1 through AI16

—

100 Mohm (min.)

Rin (re AREF2)

AREF1

—

100 Mohm (min.)

Rin (note 1)

AI1 through AI16

100 Mohm (min.)

CMR (note 2)

AI1 through AI16

51 dB min.

CMR (note

AI1

AI16

41 dB min.

CMR (note 4)

AI1 through AI16

66 dB min.

NMR (note 5)

AI1 through AI16

(note 5)

Rin (re AGND)

AI1/2

AI15/16

DIFF

100 Mohm (min.)

CMR (note 6)

AI1/2

AI15/16

DIFF

72 dB min.

CMR (note 7)

AI1/2

AI15/16

DIFF

49 dB min.

CMR (note 8)

AI1/2

AI15/16

DIFF

81 dB min.

NMR (note 9)

AI1/2

AI15/16

DIFF

(note 9)

Notes:

AI1 through AI8 are referenced to AREF1. AI9 through AI16 are

referenced to AREF2.

CMR: DC to 20 kHz, AI1

AREF1 through AI8

AREF1, AI9

AREF2

throug

h AI16

AREF2. Referenced to AGND (model T7420A).

CMR: Same as note 2 except model T7420AF.

CMR: 60Hz, AI1

AREF1 through AI8

AREF1, AI9

AREF2 through AI16

AREF2. Referenced to AGND.

Normal mode rejection (single ended).

CMR: DC to 20 kHz, Differential signal referenced to AGND.

CMR: Same as note 6 except model T7420AF.

CMR: 50 Hz, Differential signal referenced to AGND.

Normal mode rejection (differential).

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