User Manual

8 SLC 500
™
Isolated Analog Input Modules
State-of-the-Art Performance
These modules incorporate proprietary Allen-Bradley technology, so they
operate and perform like the latest high-performance Allen-Bradley
products for full compatibility. Four selectable filter frequencies are
provided for signal/noise optimization. For even greater convenience,
they are fully configured through software (no DIP switches), can alert
the processor to a variety of errors through status bits, and can scale input
signals to user-defined ranges without any ladder programming.
Detailed Specifications
Table 2. Electrical specifications—module
Backplane Current Consumption (typical)
1746sc-INI4i 440 mA @ 5 Vdc
0 mA @ 24 Vdc
1746sc-INI4vi 550 mA @ 5 Vdc
0 mA @ 24 Vdc
Backplane Power Consumption (typical) 2.75 W
Number Of Channels 4 (differential, individually isolated)
I/O Chassis Location Any 1746 I/O module slot except slot 0
A/D Conversion Method Sigma-Delta
Input Filtering Programmable notch filters
Normal Mode Rejection 98 dB @ 50 Hz
(between + and - inputs) 98 dB @ 60 Hz
Common Mode Rejection 99 dB @ 1 kHz, 25 °C
(between inputs and chassis ground)
Calibration Factory calibrated
Autocalibrated every 10 sec (when enabled)
Opto-Electrical Isolation (10 sec) 750 Vdc channel-to-channel
750 Vdc field wiring-to-backplane
Module ID Code
1746sc-INI4i 3522
1746sc-INI4vi 3520
Thermal Dissipation 3.25 W maximum