User Manual

ManualsBrandsRockwell Automation ManualsEquipment1769-IT6 Compact I/O 1769-IT6 Thermocouple/mV Input Module

84 Rockwell Automation Publication 1769-UM004B-EN-P - March 2010

Appendix A Specifications

Electrical /EMC The module has passed testing at the following levels.

ESD immunity (IEC61000-4-2) 4 kV contact, 8 kV air, 4 kV indirect

Radiated immunity (IEC61000-4-3) 10 V/m , 80…1000 MHz, 80% amplitude modulation,

900 MHz keyed carrier

Fast transient burst (IEC61000-4-4) 2 kV, 5 kHz

Surge immunity (IEC61000-4-5) 1kV galvanic gun

Conducted immunity (IEC61000-4-6)

10V, 0.15 to 80MHz

(1)

(2)

(1)

Conducted immunity frequency range may be 150 kHz…30 MHz if the radiated immunity frequency range is

30…1000 MHz.

(2)

For grounded thermocouples, the 10V level is reduced to 3V.

Table 13 - Input 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 W (The Watts per point, plus the minimum Watts,

with all points energized.)

Converter type Delta Sigma

Response speed per channel Input filter and configuration dependent. See

Effects of

Filter Frequency on Channel Step Response on page 47.

Rated working voltage

(1)

30V AC/30V DC

Common mode voltage range

(2)

±10V 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 W (for specified accuracy)

Input impedance >10 MW

Open-circuit detection time

7 ms to 2.1s

(3)

Calibration The module performs autocalibration upon powerup and

whenever a channel is enabled. You can also program the

module to calibrate every five minutes.

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

Module error over full temperature range

(0…60 °C (32…140 °F))

See page 86

CJC sensor accuracy ±0.3 °C (±0.54 °F)

CJC accuracy ±1.0 °C (±1.8 °F)

Overload at input terminals, max

±35V DC continuous

(4)

Input group to bus isolation 720V DC for 1 min (qualification test)

30V AC/30V DC working voltage

Input channel configuration Via configuration software or the user program (by writing

a unique bit pattern into the module’s configuration file).

Refer to your controller’s user manual to determine if user

program configuration is supported.

Table 12 - General Specifications - 1769-IT6

Attribute 1769-IT6