Allen-Bradley 1771-P2 Auxiliary Power Supply, 5.1V DC, 6.5A, 120/220–240V AC
Auxiliary Power Supply for Bulletin 1771 I/O Chassis
5.1V DC Regulated Output
1771-P2 pdf
Place of Origin:
USA
Brand Name:
Allenbradley
Auxiliary Power Supply for Bulletin 1771 I/O Chassis
,5.1V DC Regulated Output
,1771-P2 pdf
Auxiliary DC Power for a 1771 I/O Chassis
The Allen-Bradley 1771-P2 is an auxiliary power supply designed to power one Bulletin 1771 I/O chassis when used with an adapter module, a 1772 Mini-PLC-2 processor, or a 1772 Mini-PLC-2/15 processor. It supplies regulated DC power for the chassis logic circuitry and memory.
Where the 1771-P2 Is Used
The unit belongs to legacy Allen-Bradley 1771 I/O installations. It can be mounted on the left side of the I/O chassis or separately within the specified cable distance. The external supply connection provides the chassis with its required DC power.
Customers may search for this power supply when a 1771 I/O chassis loses DC power, the D.C. ON indicator is off, the input fuse has blown, or the supply shuts down following an overvoltage, undervoltage, or overcurrent condition. Loss of chassis power can interrupt connected I/O operation and delay PLC system recovery.
Technical Specifications
Electrical and General Specifications
| Catalog Number | 1771-P2 |
| Product Type | Auxiliary Power Supply |
| Nominal AC Input | 120 V AC / 220–240 V AC |
| Input Current | 0.75 A at 120 V AC / 0.38 A at 220–240 V AC |
| Input Voltage Range | 98–132 V AC / 196–250 V AC |
| Input Frequency | 50 / 60 Hz |
| Output Voltage | 5.1 V DC ±5% |
| Maximum Output Current | 6.5 A |
| Input Power | 65 W real / 90 VA apparent at full load |
| External Transformer | 160 VA minimum at full load, if used |
| Power Loss Time Delay | 13.5 ms ±2.5 ms |
| Weight | 5.89 kg (13 lb) |
| Dimensions (W × H × D) | 11.6 × 28.6 × 18.2 cm (4.56 × 11.25 × 7.16 in) |
| Operating Temperature | 0 to 60 °C (32 to 140 °F) |
| Storage Temperature | −40 to 85 °C (−40 to 185 °F) |
| Relative Humidity | 5–95%, non-condensing |
Fuse and Input Configuration
| 120 V AC Fuse | 1 A, 3AG slow-blow |
| 220/240 V AC Fuse | 0.5 A, 3AG slow-blow |
| 120 V Fuse References | Bussmann MDL 1A / Littelfuse 313001 |
| 220/240 V Fuse References | Bussmann MDL 0.5A / Littelfuse 313.500 |
| Factory Configuration | 120 V AC |
For 220/240 V AC operation, the manufacturer specifies changing the terminal-strip jumper arrangement and replacing the 1 A fuse with the specified 0.5 A fuse. Verify the input configuration before energizing the unit.
Mounting and Power Cable Information
| Chassis-Side Mounting | Left side of the 1771 I/O chassis |
| Separate Mounting | Up to 5 cable-feet from the I/O chassis |
| 1771-CD Cable | 1.52 m (5 ft), for panel-mounted 1771-P2 |
| 1771-CE Cable | 0.30 m (1 ft), for chassis-mounted 1771-P2 |
Mounting and Power Connection Notes
The supply may be mounted on the left side of the chassis or separately above or beside the chassis. The manual states that it must not be mounted below the I/O chassis to preserve convection cooling. For separate mounting, maintain at least 6 inches of vertical clearance.
Connect the 9-pin plug of the specified power cable to the bottom connector on the supply and connect the other end to the external power supply connector on the I/O chassis.
The AC line connects to L1 and L2. Connect the grounding stud to the system ground bus, or use the equipment grounding terminal as specified by the manufacturer.
Disconnect system power before installation or service. Incorrect input jumpers can cause improper operation or damage. Installation should be performed by qualified personnel.
D.C. ON Indicator and Protection
The supply monitors for overvoltage, undervoltage, and overcurrent. It shuts down when these conditions are detected. The manual instructs cycling AC input power after the cause has been addressed.
Discontinued Product
Rockwell Automation lists the 1771-P2 as discontinued. The official product page classifies its replacement category as Engineering Replacement; it does not identify a specific direct substitute.
Manufacturer Reference
For the 1771-P2 PDF/manual reference, consult Rockwell Automation publication 1771-2.7, Auxiliary Power Supply – Installation Data, also listed as technical document 1771-TD007. It covers mounting, AC input selection, fuse protection, backplane power connection, output behavior, troubleshooting, and specifications.
Sourcing Support
AMIKON supports sourcing for legacy PLC power supplies and industrial automation components.
Industrial Parts. Reliable Sourcing.
AMIKON Industrial Supply supports industrial users with practical sourcing assistance for automation parts and maintenance requirements. We focus on clear product identification, responsive communication, and coordinated supply support for demanding industrial environments.
1771-P2 Frequently Asked Questions
Related Models · Additional Sourcing References
These catalog numbers are additional sourcing references only. They are not identified as compatible replacements for 1771-P2.
VIEW MODEL REFERENCES
| R47 DRE100 M4BE2HF/TF/ES7S | W3T385627 | MX-401RV5E | ABB ACS60100303 S00C1200001 |
| GV3000/SE 896.11.81A GV3000U-AC043-AA-DBT | CMP50M/BP/KY/AK0H/SB1 | IZMN1-U630 | 3SIEK132M6A |
| DGP-63-800-PPV-A | FM71 21.71.304 | 025-100/112 G10 GBN025100112G10 | KF47 DT90L4/BMG/HR/TF/AV1H/IS |
| Parker D81VW21C1NJW8975 + D1VW4CNJW75 | FH67/G DY90L/B/TH | Yaskawa SGMDH-45A2B-YR14 | 180S-MC2-50-1K1-2K |
| 112B-0-LD-2-C/130-A-1/S05 | Siemens 2KJ3508-5CA07-0HE2-Z | TS 220 D6R6L | 80F x 500-6206 R343900 |
| 92172VF-90L/4 BRE20 | Siemens 1FK7063-AF71-1SH3 + LP120-M01-10 | HK37 DRE90L4BE2/ASE8/TF | SC-4-1G |
| 2711P-RDT10C | 3IF787.9-1 | X20TB32 | OAK1999I-4 |
| X20TB52 | 4B1270.00-490 | 5W000000050307-000 | 8LSA44.EB022D000-3 |
| 8BVP0440HW00.000-1 | 8BVI0055HCS0.000-1 | PP15 | 4PP015.E420-36 |
| 80SD100XD.C0XX-01 | 6PPT50.101E-10B | 8I64S200018.00X-1 | AB7000 |
| 8EI4X5HWS10.0500-1 | X20CSO4110 | X20BC8083 | X20IF1072 |
| X20BC00E3 | X20AI2622 | 7AO352.7 | AO352 |
| DO138 | 7D0138.70 | 7DO138.70 | 7AT324.70-1 |
| DO139 | 7D0139.70 | 7DO139.70 | CI410 |
| 7CI410.70-1 | IF361 | AI351 | 7IF361.70-1 |
| 7AI351.70 | 41F370.7 | 7RM351.70 | FH67B/R CM71L/KTY/AKOH/SM60 |
| Sera RT 411 KM-56/6 | CX2040-0100 + CX2100 0014 | KH57/T CM71L/BR/TF/RH1L/KK | Siemens 1FT6105-1AC71-1EH1 |
| SF57 DRE90M2BE1/Z/LN | RF47 DRN100LM2/LN | CMP63M/BP/KY/AK0H/SB1 | 112A-N-020-N2L-130GAO |
| ED806US0M140 | 5RN100L04K | B1-1-II S544-I=4:1-30743 | DRU100MJ4BE5/FF/TH |
| ATV61WU75N4 + VW3A1101 | Siemens 9AC9100-0AA10 | BFK458-20N 33006649 | KH57/T DY71L/B/TH |
| 2BF900-200.102CT | MX-F401KKVVE | CF270.UL.350.04.D MAT90457703 |
video
video
Send your inquiry directly to us
