Rockwell-automation 1763 MicroLogix 1100 Programmable Controllers User Uživatelský manuál stáhnout pdf (Strana 175)

Publication 1763-UM001D-EN-P - March 2011

Specifications 173

Input Specifications

Specification 1762-IF2OF2 1762-IF4 1762-IR4 1762-IT4

Number of inputs 2 differential (unipolar) 4 differential (bipolar) 4 4 input channels plus 1

CJC sensor

Update time (typical) 2.5 ms 130, 250, 290, 450,

530 ms (selectable)

Input filter and

configuration dependent

A/D converter type Successive

approximation

Successive

approximation

Delta-Sigma Delta-Sigma

Common mode voltage

range

(1)

±27V ±27V NA ±10V

Common mode

rejection

(2)

> 55 dB at 50 and 60 Hz > 55 dB at 50 and 60 Hz >110 dB at 50 Hz (with 10

or 50 Hz filter)

>110 dB at 60 Hz (with 10

or 60 Hz filter)

>110 dB at 50 Hz (with 10

or 50 Hz filter)

>110 dB at 60 Hz (with 10

or 60 Hz filter)

Non-linearity (in percent

full scale)

±0.12%

(4)

±0.12%

(4)

±0.05% NA

Typical overall accuracy

(3)

±0.55% full scale at

-20…65 °C

(4)

±0.3% full scale at 25 °C

±0.32% full scale at

-20…65 °C

(4)

±0.24% full scale at

25 °C

±0.5 °C (°F) for Pt 385 NA

Input impedance Voltage Terminal:

200 KΩ

Current Terminal: 250 Ω

Voltage Terminal:

200 KΩ

Current Terminal: 275 Ω

>10 ΜΩ >10 ΜΩ

Current input protection ±32 mA ±32 mA NA NA

Voltage input protection ±30V ±30V NA NA

Channel diagnostics Over or under range or

open circuit condition by

bit reporting for analog

inputs.

Over or under range or

open circuit condition by

bit reporting for analog

inputs.

Over or under range or

open circuit condition by

bit reporting for analog

inputs.

Over or under range or

open circuit condition by

bit reporting for analog

inputs.

(1) For proper operation, both the plus and minus input terminals must be within ±27V (±10V for 1762-IT4) of analog common.

(2) Vcm = 1 Vpk-pk AC

(3) Vcm = 0 (includes offset, gain, non-linearity and repeatability error terms)

(4) Only applicable to Series B I/O modeles.

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