Product Description
Product Details
Manufacturer: Allen-Bradley
Model/Part Number: 1771-IFM
Description: Fast Millivolt Input Module
Specifications
|
Attribute |
Value |
|---|---|
|
Inputs per Module |
8 differential low level |
|
Module Location |
1771 I/O chassis – 1 slot |
|
Input Voltage Range |
0 to 50 mV |
|
Resolution |
12-bit binary |
|
Accuracy |
±0.1% of range @ 25°C |
|
Linearity |
±1 LSB |
|
Repeatability |
±1 LSB |
|
Isolation Voltage |
1500V (transient) |
|
Input Overvoltage Protection |
32V |
|
Input Impedance |
1M ohms |
|
Maximum Input Voltage |
±10V |
|
Common Mode Rejection |
100 dB DC-60Hz |
|
Backplane Current |
0.75A @ +5V |
|
Output to Processor |
0000 to 4095 (BCD), 9999 BCD with selectable scaling, 32767 Binary |
|
A/D Converter |
Monotonic output with no missing codes |
|
Resolution |
12-bit binary |
|
Absolute Accuracy |
±0.1% of full scale |
|
Quantizing Error |
±1/2 LSB |
|
Temperature Coefficient |
±50 ppm/°C of full scale range (0 to 60°C) |
|
Recalibration Time |
Every 6 months to maintain specified accuracy |
|
Internal Scan Rate |
12.5 ms for 8 differential inputs (without digital filtering), +2.5 ms for filtering |
|
Environmental Conditions |
Operating Temp: 0 to 60°C (32 to 140°F) Storage Temp: -40 to 85°C (-40 to 185°F) Relative Humidity: 5 to 95% (non-condensing) |
|
Conductors & Wiring |
14 AWG stranded (max.), 3/64 inch insulation (max.) |
|
Wiring Category |
Category 21 |
|
Keying |
Between 20 and 22, Between 28 and 30 |
|
Wiring Arm |
Catalog Number 1771-WG |
|
Field Wiring Arm Screw Torque |
7-9 inch-pounds |