AEP9D Yokogawa CENTUM VP DCS Power Supply Module

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Yokogawa AEP9D Power Supply Module The Yokogawa AEP9D, also cataloged as the AEP9D Power Supply Module, operates as a dedicated...

SKU: AEP9D

Manufacturer: Yokogawa
Product No.: AEP9D
Product Type: Power Supply Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 350g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa AEP9D Power Supply Module

The Yokogawa AEP9D, also cataloged as the AEP9D Power Supply Module, operates as a dedicated hardware component for converting incoming AC/DC supply into regulated DC output within Yokogawa CENTUM VP / CS DCS systems platforms. The power module transforms input voltage variables into a regulated +5 VDC bus output, delivering up to 10 A of drive current directly to the integrated system backplane and neighboring I/O modules.

Hardware Specifications

Parameter	Specification
Model	AEP9D
Brand	Yokogawa
Origin	Japan
Weight	0.35 kg
Dimensions	130 mm x 115 mm x 32 mm
Operating Temp	0-50 deg C
Power Consumption	Max Input 200-230 VA / Output up to 10 A
Input Voltage	100-120 VAC / 220-240 VAC (50/60 Hz) or 24 VDC
Output Voltage	+5 VDC regulated
Efficiency	>=85% typical
Ripple/Noise	<=50 mV peak-to-peak
Isolation	1500 V AC isolation between input and output
Redundancy	Supports dual redundant power supply configuration

Process Control & DCS Instrumentation Integration

The AEP9D implements a dedicated 4-20 mA HART loop protocol layer and FOUNDATION Fieldbus / Profibus PA connectivity parameters by ensuring continuous, noise-isolated power distribution across the field instrument bus. Galvanic isolation barriers rated at 1500 V AC physically isolate line-side transients from the sensitive inner backplane logic architectures. The power configuration integrates direct Removal and Insertion Under Power (RIUP) mechanics, maintaining precise voltage regulation limits during live module extractions while dual-redundant matching cards balance the active load demands.

Frequently Asked Questions

Q: How does the AEP9D handle active load distribution when configured in a dual-redundant layout?

A: When two AEP9D modules populate a redundant backplane, internal diode-ORing circuitry balances the power output between both units. If one module experiences a component failure or an input line drop, the secondary parallel supply instantly assumes the full 10 A load without causing a voltage dip on the +5 VDC rail.

Q: What are the specific battery backup requirements to preserve system data if input power fails?

A: The AEP9D module functions strictly as a voltage regulator and does not host an internal battery. Memory retention tasks during total mains blackouts rely on the main Field Control Unit (FCU) battery subsystem, which provides up to 72 hours of data backup following a standard 48-hour charging routine.

Q: Does the unit feature built-in protection against secondary short circuits on the I/O bus?

A: Yes. The hardware includes internal overcurrent and overvoltage monitoring paths. If a short circuit occurs on the +5 VDC backplane side, the module enters a hiccup current-limiting mode to protect internal traces, recovering automatically once the external fault condition is cleared.

Field Installation Guidelines

Slide the AEP9D module into its designated slot on the 19-inch rack baseplate, pushing firmly until the rear connector blocks latch onto the backplane bus pins. Fasten the faceplate retention hardware completely to provide solid grounding paths and mitigate high-frequency mechanical vibration.

Route the primary AC or 24 VDC supply cables through dedicated power distribution wireways, maintaining distinct physical isolation from low-voltage 4-20 mA analogue signaling lines. Connect all incoming earth ground pins directly to the main cabinet instrument earth copper bus bar. Verify that adjacent ventilation holes remain entirely clear to prevent heat stagnation and ensure continuous operational efficiency at or below the 50 deg C operating threshold.

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