1771-A1B
The Allen-Bradley 1771-A1B I/O rack is an I/O rack and chassis assembly. It is manufactured in the Allen-Bradley PLC 5 series. The 1771-A1B I/O rack comes with 5 slots for hosting 5 I/O modules. The current rating of this I/O rack and chassis assembly is 16 Amps and the voltage rating is 5.25 Volts DC. The 1771-A1B I/O rack can work with an Allen-Bradley 1771-P7 power supply module.
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Technical specifications for 1771-A1B
| Manufacturer | Rockwell Automation |
|---|---|
| Brand | Allen-Bradley |
| Part Number/Catalog No. | 1771-A1B |
| Module Type | I/O Chasis |
| Number of Module I/O Slots | 4 Slots |
| Max Backplane Current (at 5 Volts DC) | 16 Amperes |
| Mount Type | Back Panel |
| Enclosure Type | Open Style |
| Operating Shock | 15 g |
| Nonoperating Shock | 30 g |
| Vibration | 2 g (at 10-500 Hertz) |
| Dimensions | 3.5 x 6.5 x 2.0 in (89 x 165 x 51 mm) |
| Weight | 8.0 lbs (3.6 kg) |
| Location | Stand-Alone |
The 1771-A1B is an Allen-Bradley PLC-5 Chassis . The Allen-Bradley 1771-A1B chassis is the backbone of every Allen-Bradley PLC-5 programmable controller system. This chassis provides a communication path between various I/O modules and either the controller or the I/O adapter module. 1771-A1B is a universal and compact enclosure for the processor, power-supply modules, remote and extended-local I/O adapter modules, and I/O modules. 1771-A1B chassis has 4 slots for mounting various modules. The far-left slot of 1771-A1B chassis is reserved for either the processor or adapter module. The other slots in the chassis are compatible with communication modules, I/O modules, and power-supply modules. It is crucial to follow the compatibility tables for each PLC-5/1771 module. Please note the 1771-A1B is part of series B. Power supplies 1771-P1, -P2, -P7 and -PS7 can be mounted on the left side plate of the 1771-A1B chassis.
The 1771-A1B chassis is designed for panel mount installation. 1771-A1B chassis can receive power through processors with integral power supplies that provide 2 to 4 amps, power supply modules that provide 3 to 8 amps, and external power supplies that provide 6.5 to 16 amps. The largest back-plane current for the 1771-A1B is 16 amps operating at 5 Volts DC. The 1771-A1B chassis must be connected to a central ground bus via grounding studs situated on the chassis itself. The chassis’ power supply is configured via the configuration jumper. The jumper has two positions: "N" - position for external power supply, and "Y" - position for power-supply module or processor with and an integral power supply. 1771-A1B chassis cannot be powered with both a power-supply module and an external power supply at the same time.
| Revision Part # | Also known as | |
|---|---|---|
| 1771-A1B Ser A | 1771-A1B/A, Series A, Rev A | Request a quote |
| 1771-A1B Ser B | 1771-A1B/B, Series B, Rev B | Request a quote |
| Don't see your particular revision? Contact us now. | ||
- 1771-A18
- 1771-ALB
- 1771A18
- 1771A1B
- 1771ALB
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- 177LA1B
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- L771A1B
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- L77L-ALB
- L77LAL8
- L77LALB
Allen Bradley PLC 5 I/O Chasis, 4 Slots, 16 Amperes, Back Panel Mount Type