Primary Power Supply Bus Unit Yokogawa AEP7D10

Hardware Specifications

AC Power Distribution and DCS Integration

The AEP7D series provides a primary power supply bus interface for compatible Yokogawa control hardware. Before connecting the unit, verify the rated input voltage, terminal assignments, protective earth connection, and permitted current for each connection point against the applicable installation documentation.

The brand-specific process-control context does not establish that this bus unit supports 4-20 mA HART, FOUNDATION Fieldbus, Profibus PA, or channel-to-channel signal isolation. Those functions should be assigned only to hardware whose documentation explicitly specifies them.

The supplied information also does not establish independent Line A and Line B operation, automatic transfer behavior, or a switching delay for the AEP7D10. Confirm the actual power distribution and redundancy arrangement from the system configuration documents.

Frequently Asked Questions

Q: What input voltage does the AEP7D10 support?

A: The supplied series information identifies the -1 configuration as 100-120 V AC input. Confirm the complete ordering code and nameplate before energizing the unit.

Q: Can the AEP7D10 operate in a redundant power configuration?

A: The supplied description refers to dual-path power arrangements, but it does not establish the exact redundancy capability of the AEP7D10. Verify the supported topology and connection requirements in the manufacturer’s hardware manual.

Q: What is the maximum allowable current?

A: The supplied specifications state 20 A for the bus unit and 6 A per output port. Confirm these ratings against the exact model documentation before sizing conductors or connecting loads.

Field Installation Guidelines

• Verify the complete model code and nameplate voltage before installation.
• Isolate the power source and follow the site’s lockout and electrical safety procedures before wiring.
• Mount the unit using the specified cabinet hardware and approved mechanical arrangement.
• Connect protective earth according to the manufacturer’s installation instructions.
• Route AC power conductors separately from low-level analog signals and communication wiring where practical.
• Confirm conductor size, terminal compatibility, upstream protection, and load current against the manufacturer’s ratings.
• Do not assume hot-swap support or redundant power transfer without explicit documentation.
• Check the applicable explosion protection requirements before installing the unit in a classified area.
• Energize the unit only after inspecting wiring, grounding, and terminal connections.