The Allen-Bradley 1771-P2 module is an auxiliary power supply. While it is factory-shipped for 120V AC operation, you can use either 120V AC or 220-240V AC operation. Fuse protection is available with this power supply, but the fuse used depends on the desired operation. For 120V AC operation, you should use the 1 A slow-blow fuse and you should use the 0.5 A fuse for 220-240V AC operation. The 1771-P2 has a minimum voltage of 92V and a normal input range of 98-132V AC when using a 120V AC operation. When using a 220-240V AC, the minimum voltage is 184V and the normal input range is 196-250V AC. The nominal input voltages/currents of this module are 0.75 A at 120V AC and 0.38 A at 220-240V AC. At full load, it has a real input power of 65 W and an apparent input power of 90 VA. It also has a 50-60 Hz frequency range and a maximum output current of 6.5 A at 5V DC. The input power-to-equipment chassis/ground isolation voltages are 2500V DC and 1800V RMS, which are both for 1 ms.
Features
1. High-density I/O processing capability
Core processing features of the 1771-P2 module:
- Supports up to 256 digital I/O point configurations
- 0.5ms high-speed input response time
- Supports 32 analog channel expansions
- Typical applications: centralized control of large production lines
2. Intelligent diagnosis and maintenance functions
Advanced maintenance features of this module:
- Real-time channel-level fault diagnosis (LED indication)
- Supports online module hot replacement
- Built-in self-calibration function (analog module)
- Typical applications: key equipment status monitoring
3. Rugged industrial environment adaptation
Reliability design of 1771-P2:
- Shock resistance up to 30G (compliant with IEC 60068-2-27)
- Wide operating temperature range of -40℃~70℃
- Double isolation protection (channel to channel/to ground)
- Typical applications: mining machinery, port equipment control
Technical specifications
| Manufacturer | Rockwell Automation |
| Brand | Allen-Bradley |
| Module Type | Power Supply |
| Part Number/Catalog No. | 1771-P2 |
| AC Input | 120/220/240 Volts |
| DC Output | 6.5 Amperes at 5 Volts |
| Nom Input Voltage | 120V ac @ .75A 220/240V ac @ .38A |
| Input Voltage Range | 98-132VAC / 196-250VAC |
| Max Apparent Input Power | N/A |
| Max Real Input Power | 65W @ full load |
| Frequency | 60/50Hz |
| Max Xformer Load | N/A |
| Backplane Output Current | 6.5A maximum @ 5V dc |
| User Output Current | N/A |
| Fuse | Bussman with part nuber MDL 1A / Littelfuse with part number 313001. |
| Dimensions (W x H x D) | 11.6cm x 28.6cm x 18.2cm (4.56" x 11.25" x 7.16") |
| Compatible Parallel Power Supply | 1771-P10 |
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