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1746-P1
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Other Available Revisions for the 1746-P1 1746-P1//A
Common misspellings:
- l746-P1
- 17A6-P1
- 1746-Pl
- 1746P1
The 1746-P1 from Allen-Bradley is a power supply device in the SLC 500 system. Separate power supplies for SLC 500 systems require attachment on the left side of the 1746 I/O chassis. The 1746-P4 supplies power for your system at each I/O slot and for the processor. A beneficial feature for the 1746-P1 power supply unit is a functional LED light which indicates if your system is properly receiving power. Additionally, the power supply has a CPU hold-up time of 20 ms for a full load or 3000 ms for no load. This helps to prevent corruption of your system in case of brief power losses.
The 24V dc user power voltage range is from 18-30V dc. The maximum user-supplied overcurrent protection is 15A. Isolation for the 1746-P1 measures 1800V ac RMS for 1 second. The line voltage for the power supply unit is 85-132V/170-265V ac at 47-63 Hz and the typical line power requirement is 135VA. Maximum inrush current for the 1746-P1 is 20 A. The backplane output current is 2A at 5V dc and 0.46A at 24V dc.
The 1746-P1 has a maximum of two 14 AWG wires per terminal. A power fuse supply is included to help prevent fire hazard due to short-circuit conditions. Recommended operating temperatures for the 1746-P1 range from 0-60 degrees Celsius (32-140 degrees Fahrenheit). The unit should be stored in temperatures ranging from -40-85 degrees Celsius (-40-185 degrees Fahrenheit). The 1746-P1 is efficiently designed for supplying power to your system with dimensions of 140 x 58 x 145 mm (5.5 x 2.3 x 5.7 in) and a weight of 0.9 kg (2.0 lb).
Technical Specifications for 1746-P1
| Manufacturer | Allen-Bradley / Rockwell Automation |
|---|---|
| Series | SLC 500 |
| Part Number | 1746-P1 |
| Product Type | Power Supply Module |
| Compatibility | SLC 500 Devices |
| Input Voltage Range | 85 to 132/170 to 265 Volts AC |
| Frequency Range | 47 to 63 Hertz |
| Power Requirement | 135 VA |
| Maximum Inrush Current | 20 Amps |
| Internal Current Capacity | 2 Amps at 5 Volts DC/0.46 Amps at 24 Volts DC |
About 1746-P1
The Allen-Bradley 1746-P1 module is a power supply module for the SLC 500 controllers. The line voltage supported by the module is 85 to 132 Volts AC or 170 to 265 Volts AC. The supported line frequency range is from 47 to 63 Hertz. The typical power requirement of the 1746-P1 module is 135 VA. The maximum inrush current rating of the power supply is 20 Amps. The internal current capacity is 2 Amps at 5 Volts DC and it is 0.46 Amps at 24 Volts DC. The 1746-P1 power supply comes with an integrated fuse with the catalog number 1746-F1. The current capacity for user-supplied 24 Volts DC power is 200 milliamps. The ambient operating temperature range for the 1746-P1 power supply is 0 to 60 degrees Celsius. The current capacity of the 1746-P1 module is derated by 5% at temperatures above 55 degrees Celsius.The isolation rating of the 1746-P1 module is 1800 Volts AC RMS for 1 second. SLC controllers are designed to operate for short period of time known as the hold time if the input voltage to the power supply falls below the rated operating voltage. During the hold time, the controller continues to control the I/O and it scans the user program. If the voltage input remains below the threshold for a period of time which exceeds the hold time, then the SLC 500 controllers stop scanning the user program and disable the outputs. The CPU hold time is 20 milliseconds at a full load, and it is 3000 milliseconds at no load. One flat head screwdriver and one Philips head screwdriver are required to install the 1746-P1 module. ESD precautions should be followed when handling and installing the power supply.
