Configured for redundant DC power distribution and voltage arbitration in AC800M controller platforms, the ABB SS823 3BSE038226R1 (SS823 Power Voting Unit) provides direct physical/electrical execution.

Nomenclature & Part Identification

• Base Model: SS823
• Part Catalog Number: 3BSE038226R1
• Hardware Designation: Power Voting and Distribution Module
• Platform Architecture: ABB AC800M Distributed Control System

Hardware Specifications

Backplane Bus Communication & Firmware Integration

The unit manages dual-feed power input arbitration, utilizing high-efficiency diode-OR internal circuits to maintain uninterrupted 24 VDC output rails during a single power supply failure. Backplane bus communication velocity licenses and firmware flash compatibility rules ensure seamless status reporting back to the main control processor over system backplane channels, maintaining strict I/O density scaling limits without voltage drop anomalies.

Standard Delivery Manifest

• 1 x ABB SS823 3BSE038226R1 Power Voting Unit
• 1 x Protective terminal cover set

Physical Mounting & Wiring Directives

DIN-Rail Enclosure Assembly

• Mount the module securely onto a standard 35 mm DIN rail inside an approved industrial cabinet enclosure, ensuring vertical orientation for natural convection cooling.
• Leave adequate clearance above and below the housing to prevent thermal stacking from neighboring power supplies.

Power Cabling & Grounding

• Connect primary and secondary DC supply lines (18 to 32 VDC) to the designated screw terminals, ensuring cable gauges comply with the 20 A maximum current rating.
• Connect the chassis ground stud directly to the system earth bus bar using low-impedance copper conductors to mitigate electrical noise.

Technical Query Resolution

• What is the acceptable input voltage range for the voting unit?

  The unit accepts DC supply voltages ranging between 18 VDC and 32 VDC across dual input channels.

• What nominal output voltage does the module deliver to the bus?

  The module outputs a regulated 24 VDC rail to downstream system components.

• What maximum input current can the power voting unit handle?

  The hardware is rated to support continuous input current loads up to 20 A.

• What conversion efficiency does the internal power path maintain?

  The unit achieves an operational efficiency rating of 95 percent or higher under normal load.

• What are the thermal operating limits for safe deployment?

  The module operates reliably within an ambient temperature span from -25 deg C to +70 deg C.

• Is hot-swapping supported while the system is energized?

  Hot-swapping is permitted for redundant power paths, but maintenance personnel must exercise caution around exposed 24 VDC terminals.

• What are the exact dimensions of the shipping packaging?

  The transit box measures 5.0 cm in length by 10.8 cm in width by 13.2 cm in height.

• What is the total net weight of the packaged hardware?

  The packaged unit weighs exactly 0.62 kg including protective enclosures.