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The Allen-Bradley 1746-P1 is a SLC 500 Power Supply. This Power Supply has an Input Voltage of 120/220 Volts AC and an Input Voltage Range of 85-132 or 170-265 Volts AC. It requires an Input Power of 42 Watts while providing an Output Voltage Range of 18-30 Volts DC.
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The Allen-Bradley 1746-P1 is an SLC 500 power supply. It has a line voltage of 85-132V or 170-265V AC at 47-63 Hz and with a typical line power requirement of 135 VA. Its internal current capacity is 2 A at 5V DC and 0.46 A at 24V DC and its inrush current is a maximum of 20 A. This power supply also has a 24V DC user-power current capacity of 200 mA and a 24V DC user-power voltage range of 18-30V DC. The maximum user-supplied overcurrent protection is 15 A and the isolation between the input terminals and the backplane is 1800V AC RMS for 1 s. Measuring 5.5 x 2.3 x 5.7 inches and weighing 2 lbs or 0.9 kg, this power supply can be installed in a 1746 chassis. It also has an operating temperature of 0 to 60 ËC and the current capacity is derated by 5% when the temperature exceeds 55 ËC.
The input jumper must be set before applying power to the 1746-P1 power supply during installation. This is because the exposed pins have hazardous voltage when power is applied and this may result in injury. This power supply comes with fuse protection but this is limited only to guarding against fire hazards due to short-circuit conditions.
For user-power overcurrent conditions, the 1746-P1 Series A that is made in Japan will undergo a power supply shutdown and CPU fault and the recovery procedure is to reload the user program. For the 1746-P1 Series A that is made in Malaysia, the CPU continues but a 24V DC user shutdown occurs and the recovery procedure is to correct the overcurrent condition.
When undervoltage happens, the 1746-P1 power supply will continue to operate the SLC 500 controllers for a short time and it will stop supplying power to the controllers when the input voltage drops below the recommended operating range for a time that is longer than the CPU hold-up time. For the 1746-P1 power supply, the CPU hold-up time is 20 ms for the full load and 3000 ms for no load. Operations will resume once the power supply gets the normal input voltage.
120/220 Volts AC
Input Voltage Range:
85-132 or 170-265 Volts AC
Output Voltage Range:
18-30 Volts DC
Backplane Current (5 Volts):
Backplane Current (24 Volts):
2 pounds (0.9 kilograms)
5.5 x 2.3 x 5.7 inches
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