Configured for power conversion in PowerFlex drive assemblies, the Allen-Bradley 80026-518-01-R (80026-518-01 DC Switching Power Supply) provides direct electrical regulation for multi-rail output requirements within industrial control platforms.

Model Identification Reference

The 80026-518-01-R represents a multi-output switching power supply designed for high-density integration. The hardware configuration supports various voltage rails, specifically targeting 5 VDC, 15 VDC, and 24 VDC outputs to power internal control logic and peripheral feedback components.

Hardware Specifications

Industrial Drive Control Characteristics

The unit maintains strict backplane bus communication velocity and power stability when integrated with PLC and drive systems. Firmware flash compatibility and deterministic network behavior are ensured through filtered output rails, preventing EMI interference on Profinet or EtherNet/IP deterministic networks. The module is engineered to handle I/O density scaling by providing steady auxiliary power to high-draw communication modules without inducing voltage droop.

Ordering Information

• One (1) 80026-518-01-R DC Switching Power Supply unit.

• Static-dissipative packaging.

• Factory inspection and technical compliance documentation.

Field Installation Guidelines

• Input Wiring: Ensure the AC input is fused according to local codes and connected to a dedicated source to prevent noise injection from heavy motor loads.

• Output Distribution: Verify that the 5 VDC, 15 VDC, and 24 VDC rails are not paralleled unless the specific application manual supports current sharing.

• Grounding: Secure the power supply chassis to the main drive cabinet ground plane using a low-impedance connection to comply with EMI shielding requirements.

• Airflow: Maintain a minimum clearance of 5 cm around the ventilation openings to prevent thermal derating during full-load operation.

• Connection Check: Inspect all terminal block fasteners for tightness to prevent contact resistance heating under high-current draw.

Frequently Asked Questions

• Can the power supply be used for safety-rated circuits?

  Ensure the power supply output meets the specific galvanic isolation and PELV/SELV requirements defined by your safety system documentation.

• What is the response time for a sudden load change?

  The internal feedback loop is designed for fast transient response to maintain regulation, keeping voltage stability within the specified 1% tolerance.

• Is the hold-up time adequate for power dips?

  Yes, the >= 20 ms hold-up time provides sufficient duration for the drive to execute a controlled shutdown or ride through a momentary AC power loss.

• Why is the ripple and noise parameter set to < 50 mV pp?

  This low threshold is critical to prevent interference with sensitive analog sensor signals and high-speed communication backplanes.

• Can I replace the internal fuse if the unit fails?

  The unit is not intended for user-level repair; internal fuse failure typically indicates a deeper component fault requiring unit replacement.

• Is the output protected against short circuits?

  Yes, the unit features built-in current limiting and short-circuit protection to safeguard both the supply and the downstream control modules.

• How is the 24 VDC output calibrated?

  The 24 VDC output is factory-set to be precise to +/- 1%; no manual field calibration is required or recommended.

• Does this unit support parallel operation for redundancy?

  No, this power supply is not designed for parallel redundancy without additional blocking diodes and load-sharing controllers.