Rockwell-automation T7420A_AF ICS Regent+Plus Analog Input Modules 60H Uživatelský manuál Strana 29

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Analog Input Modules
(T7420A, AF)
PD
-
7023
Mar
-
06
29
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
SE
100 Mohm (min.)
CMR (note 2)
AI1 through AI16
SE
51 dB min.
CMR (note
3)
AI1
-
AI16
SE
41 dB min.
CMR (note 4)
AI1 through AI16
SE
66 dB min.
NMR (note 5)
AI1 through AI16
SE
(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:
1)
AI1 through AI8 are referenced to AREF1. AI9 through AI16 are
referenced to AREF2.
2)
CMR: DC to 20 kHz, AI1
-
AREF1 through AI8
-
AREF1, AI9
-
AREF2
throug
h AI16
-
AREF2. Referenced to AGND (model T7420A).
3)
CMR: Same as note 2 except model T7420AF.
4)
CMR: 60Hz, AI1
-
AREF1 through AI8
-
AREF1, AI9
-
AREF2 through AI16
-
AREF2. Referenced to AGND.
5)
Normal mode rejection (single ended).
6)
CMR: DC to 20 kHz, Differential signal referenced to AGND.
7)
CMR: Same as note 6 except model T7420AF.
8)
CMR: 50 Hz, Differential signal referenced to AGND.
9)
Normal mode rejection (differential).
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