Rockwell Automation 1769-IT6 Compact I/O 1769-IT6 Thermocouple/mV Input Module User Manual
Page 84
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.
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
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