The Allen Bradley 1756-IA16 is a Sixteen (16) channel AC input module from the ControlLogix Programmable Automation Controller (PAC) platform. This module is used to interface discrete signaling devices such as switches, auxiliary contacts and similarly operating devices that are rated for 120VAC, nominal and voltage range of 74-132VAC with frequency of 47-63 Hz.
It has Sixteen (16) input channels, grouped into Two (2) groups of Eight (8) points per group. The 1756-IA16 module’s operating voltage range is from 74 to 132 Volts AC at a frequency of 47 to 63 Hertz, while both the voltage category and input frequency are 120 Volts AC and 50/60 Hertz, respectively. This module has an input delay time of 10 milliseconds for OFF to ON transition the configured filter time (user-selectable at 1 or 2 milliseconds). For ON to OFF transition, hardware delay is 8 milliseconds maximum plus filter time ( user-selectable at 9 or 18 milliseconds). At 5.1 Volts DC, the current draw is 100 milliamps and there are 2 milliamps of current draw at 24 Volts DC. The total backplane power is 0.58 Watts and it dissipates 5.8 Watts of power at 60 degrees Celsius for and 18.41 BTU/hour of thermal energy. The maximum off-state voltage is 20 Volts and the current is 2.5 milliamps. The on-state current of the 1756-IA16, on the other hand, ranges from a minimum of 5 milliamps at 74 Volts AC to a maximum of 13 milliamps at 132 Volts AC. The maximum recorded inrush current is 250 milliamps peak, decaying to less than 37% in 22 milliseconds without activation.
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| Manufacturer | Rockwell Automation |
| Brand | Allen Bradley |
| Removable Terminal Block (RTB) | 1756-TBNH 1756-TBSH |
| Total Backplane power | 0.58 W |
| Backplane Current, 24VDC | 2 mA |
| Backplane Current, 5.1VDC | 100 mA |
| Signal Delay, OFF Transition | Hardware delay: 10 ms max + filter time User-selectable filter time: 1 ms or 2 ms |
| Signal Delay, ON transition | Hardware delay: 8 ms max + filter time User-selectable filter time: 9 ms or 18 ms |
| Cyclic update time | 200 µs…750 ms |
| ON-state Current, max. | 13 mA @ 132V AC, 47…63 Hz |
| ON-state Current, min. | 5 mA @ 79V AC, 47…63 Hz |
| Input Voltage range | 74-132VAC |
| No. of Inputs | Sixteen (16) |
| Part Number/Catalog No. | 1756-IA16 |
| Series | ControlLogix |
| Input Voltage | 120VAC |
| Module Type | Digital AC Input Module |
| Inputs | 16 |
| Operating Voltage Range | 74 to 132 Volts AC |
| Input Delay Time | Programmable 9 or 18 milliseconds |
| Minimum Operating Current | 5 milliamperes at 74 Volts AC |
| Maximum Operating Current | 13 milliamperes at 132 Volts AC |
| Maximum Input Current, Off-State | 2.5 milliamperes |
| Power Dissipation (Max) | 5.8 Watts at 60 degrees Celsius |
| Backplane Current at 5 Volts | 105 milliamperes |
| Backplane Current at 24 Volts | 2 milliamperes |