AEP7D-15 Yokogawa AEP7D Datasheet & Technical Manual

Yokogawa AEP7D-15 DCS Primary Power Supply Bus Unit

Yokogawa AEP7D-15 DCS Primary Power Supply Bus Unit

Availability: 20 left in stock

Yokogawa AEP7D-15 Primary Power Supply Bus Unit The Yokogawa AEP7D-15, also cataloged as the AEP7D Primary Power Supply Bus Unit,...

SKU: AEP7D-15

Manufacturer: Yokogawa
Product No.: AEP7D-15
Product Type: Power Supply Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 1800g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa AEP7D-15 Primary Power Supply Bus Unit

The Yokogawa AEP7D-15, also cataloged as the AEP7D Primary Power Supply Bus Unit, operates as a dedicated hardware component for primary power distribution and voltage regulation within DCS cabinet backplanes. Configured with dual AC input capabilities, the unit converts 100-240 VAC supply power into stable 5 VDC and 24 VDC rails to power connected analog and digital I/O modules. Overcurrent protection limits short-circuit damage across individual bus lines while maintaining low output ripple.

Suffix Breakdown & Model Matrix

Suffix Code	Option Specification
-1	100-120 VAC Input Range
-5	Basic Type without Explosion Protection

Hardware Specifications

Parameter	Specification
Model	AEP7D-15
Brand	Yokogawa
Origin	Japan
Weight	1.8 kg (Shipping Weight: 5.0 kg)
Dimensions	482.6 mm x 43.6 mm x 187 mm (19-inch rack unit)
Operating Temp	0 deg C to +55 deg C
Power Consumption	Input: 100-240 VAC, 50/60 Hz; Output: 5 VDC / 24 VDC
Max Output Current	Up to 10 A per bus
Max Input Current	20 A per primary power supply bus unit (6 A max per port)
Ripple and Noise	LE 50 mV peak-to-peak
Protection Features	Channel-level overcurrent protection
Insulation Withstand	1500 VAC withstand voltage

4-20 mA HART Loop Protocol & Channel-to-Channel Isolation

The AEP7D-15 delivers regulated DC power to field communication cards handling 4-20 mA HART loop protocol signals and high-density I/O racks. By maintaining stable output voltages with minimal ripple, the unit prevents electrical noise from cross-contaminating analog input channels equipped with channel-to-channel isolation. Cold junction compensation (CJC) circuits on thermocouple modules depend on this stable backplane bus power to maintain continuous measurement accuracy.

Frequently Asked Questions

Q: How does the AEP7D-15 handle internal overcurrent conditions on connected I/O buses?

A: The unit uses built-in channel-level overcurrent protection to limit current spikes and prevent cascading faults to adjacent modules.

Q: What input current limits apply to individual power input ports on the AEP7D-15?

A: The unit handles up to 20 A total input current, with each individual port rated for a maximum of 6 A.

Field Installation Guidelines

Mount the AEP7D-15 horizontally into a standard 19-inch cabinet rack using side brackets. Secure all mounting hardware to guarantee structural stability and ground continuity through the rack frame.

Wire AC primary input lines according to terminal phase designations. Maintain single-point cabinet grounding and isolate primary power wiring from sensitive analog signal lines to eliminate ground loops and induced noise. Ensure unrestricted airflow around the heat dissipation vents to preserve operating temperatures below +55 deg C.

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