Product Description
Allen-Bradley 1756-IB32/B DC Digital I/O Module
Product Overview
The Allen-Bradley 1756-IB32/B is a DC Digital Input Module designed for use with ControlLogix systems. It features 32 digital inputs, operates at 12/24V DC sink, and offers user-configurable input filtering for flexibility in industrial automation applications.
Technical Specifications
Electrical Ratings
| Attribute |
1756-IB32/B Specifications |
| Number of Inputs |
32 (16 points/group) |
| Voltage Category |
12/24V DC Sink |
| Operating Voltage Range |
10…31.2V DC |
| Nominal Input Voltage |
24V DC |
| Off-State Voltage (Max) |
5V |
| Off-State Current (Max) |
2.27 mA |
| On-State Current (Min/Max) |
4.8 mA @ 10V DC / 5.5 mA @ 31.2V DC |
| Input Impedance (Max) |
5.67 kΩ @ 31.2V DC |
| Current Draw @ 5.1V |
120 mA |
| Current Draw @ 24V |
2 mA |
| Total Backplane Power |
0.66 W |
| Power Dissipation (Max) |
6.2 W @ 60 °C (140 °F) |
| Thermal Dissipation |
21.1 BTU/hr @ 60 °C (140 °F) |
Timing & Response
| Attribute |
Specification |
| Input Delay Time (Off to On) |
Hardware delay: 380 µs max + user-selectable filter (0 ms, 1 ms, or 2 ms) |
| Input Delay Time (On to Off) |
Hardware delay: 420 µs max + user-selectable filter (0 ms, 1 ms, 2 ms, 9 ms, or 18 ms) |
| Cyclic Update Time |
200 µs…750 ms |
| Change of State |
Software Configurable |
| Time Stamp Accuracy |
±200 µs |
Physical & Mounting Specifications
| Attribute |
Specification |
| Slot Width |
1 |
| Isolation Voltage |
250V (continuous), Reinforced Insulation (Inputs to Backplane)
250V (continuous), Basic Insulation (Input Group-to-Group)
|
| Module Keying |
Electronic, Software Configurable |
| Removable Terminal Block (RTB) Options |
1756-TBCH, 1756-TBS6H, 1756-TBCHXT, 1756-TBS6HXT |
| Wire Size (Single Connection) |
0.33…2.1 mm² (22…14 AWG) solid or stranded copper wire rated at 105°C (221°F)
|
| Wire Size (Double Connection) |
0.33…1.3 mm² (22…16 AWG) solid or stranded copper wire rated at 105°C (221°F)
|
| Terminal Block Torque Spec |
0.5 N•m (4.4 lb•in) |
| Enclosure Type Rating |
None (Open-Style) |
| Reverse Polarity Protection |
Yes |
Environmental Ratings
| Attribute |
Specification |
| Operating Temperature |
0…60 °C (32…140 °F) |
| Non-Operating Temperature |
-40…+85 °C (-40…+185 °F) |
| Relative Humidity |
5…95% non-condensing |
| Vibration Resistance |
2 g @ 10…500 Hz (IEC 60068-2-6) |
| Shock Resistance (Operating) |
30 g (IEC 60068-2-27) |
| Shock Resistance (Non-Operating) |
50 g (IEC 60068-2-27) |
| Conformal Coating |
Yes |
| Corrosive Atmosphere Resistance |
Severity Level G3 & GX (ANSI/ISA 71.04-2013) |
| ATEX / IECEx Temperature Code |
T4 |
EMC & Immunity Ratings
| Attribute |
Specification |
| Electromagnetic Emissions |
IEC 61000-6-4 |
| ESD Immunity |
IEC 61000-4-2: 6 kV contact, 8 kV air discharges
|
| Radiated RF Immunity |
IEC 61000-4-3: 10V/m (80-2000 MHz, 1 kHz sine wave, 80% AM)
|
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