Rockwell-automation 1769-IT6 Compact I/O Thermocouple/mV Input Module Manual de usuario descargar pdf (Pagina 20)

20 Compact I/O Thermocouple/mV Input Module

Publication 1769-IN026C-EN-P - February 2010

Module Configuration Word

Word 6 of the configuration data file contains the Enable/Disable Cyclic Calibration bit.

Specifications

To select Make these bit settings

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Enable/Disable

Cyclic

Calibration

Enabled

(1)

When enabled, an autocalibration cycle is performed on all enabled channels every 5 min.

Disabled

Technical Specifications - 1769-IT6

Attribute 1769-IT6

Number of inputs 6 input channels plus 2 CJC sensors

Bus current draw, max 100 mA at 5V DC

40 mA at 24V DC

Heat dissipation 1.5 Total Watts

(The Watts per point, plus the min Watts, with all points energized.)

Converter type Delta Sigma

Input filtering Programmable notch filter with multiple frequencies

Response speed per channel Input filter and configuration dependent

(refer to the Compact I/O Thermocouple/mV Input Module User Manual,

publication 1769-UM004)

Rated working voltage

(1)

30V AC/30V DC

Common mode voltage range

(2)

±10V DC max per channel

Common mode rejection 115 dB (min) at 50 Hz (with 10 Hz or 50 Hz filter)

115 dB (min) at 60 Hz (with 10 Hz or 60 Hz filter)

Normal mode rejection ratio 85 dB (min) at 50 Hz (with 10 Hz or 50 Hz filter)

85 dB (min) at 60 Hz (with 10 Hz or 60 Hz filter)

Cable impedance, max 25 Ω

Input impedance >10M Ω

Open-circuit detection time

7 ms to 2.1 s

(4)

Calibration The module performs autocalibration upon powerup and whenever a

channel is enabled; you can also program the module to calibrate every

5 min. by using the Enable/Disable Cyclic Calibration bit

Non-linearity (in percent full scale) ±0.03%

Repeatability

(3)

±0.03%

Overload at input terminals, max

±35V DC continuous

(5)

1 2 ... 15 16 17 18 19 20 21 22 23 24

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Rockwell-automation 1769-IT6 Compact I/O Thermocouple/mV Input Module Manual de usuario Pagina 20

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