AEA4D-01 Yokogawa Terminal Board Datasheet & Technical Manual

Yokogawa AEA4D-01 Terminal Board for Analog Signals

Yokogawa AEA4D-01 Terminal Board for Analog Signals

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The Yokogawa AEA4D-01, also cataloged as the AEA4D Terminal Board for Analog Signals, operates as a dedicated hardware component for...

SKU: AEA4D-01

Manufacturer: Yokogawa
Product No.: AEA4D-01
Product Type: Digital Terminal Boards
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 1500g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

The Yokogawa AEA4D-01, also cataloged as the AEA4D Terminal Board for Analog Signals, operates as a dedicated hardware component for 16-channel analog signal termination and distribution within CENTUM VP and CS3000 Distributed Control System networks. Configured for single or dual-redundant hardware arrangements, this terminal board bridges field instruments directly to specified system analog input and output modules.

Suffix Breakdown & Model Matrix

AEA4D: Terminal Board for Analog Signals (16-channel capacity)
-0: Configured without integrated surge absorbers (standard baseline variant)
1: Style code designator for the initial product series revision (Life Cycle Status: Discontinued; functionally replaced by variants AEA4D-05 and AEA4D-06)

Hardware Specifications

Parameter	Specification
Model	AEA4D-01
Brand	Yokogawa
Origin	Japan
Weight	1.5 kg (Shipping weight: 2.5 kg)
Dimensions	120 mm x 100 mm x 25 mm
Operating Temp	-20 to +60 deg C
Power Consumption	Passive distribution interface (0 W internal power generation)
Channel Capacity	16 analog input/output points
Terminal Type	Screw terminals (2 x M4 per point)
Insulation Resistance	>= 100 MOhm at 500 V DC
Withstanding Voltage	500 V AC for 1 minute duration
Interface Connection	KS1 type multicore cable interface
Relative Humidity	5-95 % RH (non-condensing)

Process Control & DCS Instrumentation Properties

The terminal interface routes analog signaling currents across 16 discrete paths, supporting standard 4-20 mA HART loop protocol architectures and voltage signals without altering circuit impedance. Galvanic isolation and circuit separation parameters protect adjacent channels against loop-to-loop short circuits. Channel-to-channel isolation metrics limit crosstalk degradation when routing diverse signal vectors through the unified KS1 interface cable matrix to modules AAI141, AAI841, or AAI143.

Frequently Asked Questions

Q: How is dual-redundancy maintained across the AEA4D-01 terminal interface during an I/O module fault?

A: The passive hardware circuitry of the board branches each of the 16 analog paths into dual parallel connections routed through the KS1 cable connectors. This arrangement permits simultaneous interfacing with two redundant I/O cards, allowing the active DCS processor to perform an instantaneous, bumpless electronic switchover if the primary card fails.

Q: Can an AEA4D-01 unit be directly substituted with an AEA4D-06 board during system maintenance?

A: Yes, the AEA4D-06 is the official functional replacement for the discontinued AEA4D-01 framework. The form factor, electrical pinouts, and terminal positions remain fully backward-compatible, though individual system terminal assignments must be verified prior to migration.

Q: Does this specific terminal variant provide protection against high-voltage line surges?

A: No, the suffix code "-0" dictates that this version lacks built-in surge absorbers. For transient protection against outdoor lightning strikes or power induction, external surge protection modules must be wired inline with the field loops before entering the M4 screw terminals.

Field Installation Guidelines

Terminal Screw Torquing: Terminate all analog lines using ring or spade lugs suited for the 2 x M4 screw layout. Torque each terminal connection to the specified industrial standard to minimize contact resistance drift on 4-20 mA pathways.
Shield Grounding Protocols: Route the overall shield and individual twisted-pair drain wires to the dedicated instrument ground bar within the control enclosure. Do not ground the shield at both the field instrument and the terminal board to prevent ground loops.
Cable Interface Verification: Ensure that the KS1 system cable is fully seated into the board-mounted multi-pin connector and that the mechanical retaining clips are locked to avoid accidental disconnects under high-vibration conditions.

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