1746-P1 Power Supply Allen-Bradley

Allen-Bradley 1746-P1 SLC 500 Power Supply: Reliable Backplane Power

Core Technical Specifications

• Brand & Model: This is a genuine Allen-Bradley power supply, model 1746-P1.
• Module Type: This unit is a dedicated Chassis Power Supply module.
• Input Voltage: It accepts a wide input range of 120 to 220 Volts AC (85-132V/170-265V).
• Input Frequency: The operational frequency is 47 to 63 Hertz.
• Backplane Current: It supplies 2 Amps at 5V DC and 0.46 Amps at 24V DC to the chassis.
• User Power Output: It provides a 24V DC output (18-30V range) with 200 mA capacity.
• Inrush Current: The maximum inrush current is 20 Amps.
• Input Power: The typical line power requirement is 135 VA (42 Watts).

Physical & Environmental Details

• Dimensions & Weight: The module measures 5.5 x 2.3 x 5.7 inches and weighs 2 pounds (0.9 kg).
• Operating Temperature: It functions in ambient temperatures from 0 to 60 degrees Celsius.
• Derating: Current capacity reduces by 5% when temperature exceeds 55°C.
• Isolation: It features 1800 VAC RMS isolation between input and backplane for safety.
• CPU Hold-Up Time: It maintains operation for 20 ms at full load and 3000 ms at no load during brownouts.

Frequently Asked Questions (FAQ)

• Q: What input voltage does the 1746-P1 power supply accept?
  A: The 1746-P1 accepts a dual range: 85-132V AC or 170-265V AC. You must set the correct internal jumper.
• Q: How much power does it provide to the SLC 500 backplane?
  A: It delivers 2 Amps at 5V DC and 0.46 Amps at 24V DC to power all modules in the chassis.
• Q: Does it provide power for external devices like sensors?
  A: Yes, it offers a separate 24V DC user output (200 mA) for powering external devices.
• Q: What happens during a brief power dip or brownout?
  A: The power supply has a CPU hold-up time feature, keeping the controller running for 20ms to 3 seconds.
• Q: Where is this power supply installed in the chassis?
  A: It installs in the far left slot of the SLC 500 chassis. You need only one per rack.
• Q: Is the product you sell authentic and new?
  A: Absolutely. We supply only genuine, unused Allen-Bradley components with full traceability.

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