AFF50D-H41201 Yokogawa CENTUM VP Datasheet & Technical Manual

AFF50D-H41201 Yokogawa CENTUM VP Field Control Unit

AFF50D-H41201 Yokogawa CENTUM VP Field Control Unit

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Yokogawa AFF50D-H41201 CENTUM VP Field Control Unit The Yokogawa AFF50D-H41201, also cataloged as the AFF50D Field Control Unit, operates as...

SKU: AFF50D-H41201

Manufacturer: Yokogawa
Product No.: AFF50D-H41201
Product Type: Field Control Units
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 8000g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa AFF50D-H41201 CENTUM VP Field Control Unit

The Yokogawa AFF50D-H41201, also cataloged as the AFF50D Field Control Unit, operates as a dedicated hardware component for process execution within CENTUM VP control station platforms. This duplexed module runs a VR5432 processor clocked at 133 MHz, coordinating logic execution and communicating with peripheral devices over dual-redundant V-net and ESB bus interfaces. System memory is secured during input power loss by an onboard battery backup, ensuring the retention of application data.

Hardware Specifications

Parameter	Specification
Model	AFF50D-H41201
Brand	Yokogawa
Origin	Japan
Weight	8 kg
Dimensions	Standard 19-inch rack mountable (chassis design)
Operating Temp	0 to 50 deg C
Power Consumption	200 VA (at 100-120 V AC), 230 VA (at 220-240 V AC), 5.5 A (at 24 V DC)
Processor	VR5432, 133 MHz
Main Memory	32 MB
Memory Protection	Battery backup up to 72 hours (recharge time: minimum 48 hours)
FCU Status Output	2 terminals (NC, C), opens during internal FCU failures
Contact Rating	30 V DC, maximum 0.3 A
Communication Interface	Dual-redundant V-net interfaces
Bus Interface	Dual-redundant ESB bus interfaces

DCS Interface & Channel Isolation

As a main controller within Yokogawa process systems, the unit manages digital data flow across integrated field instrumentation networks. Communication cards linked to the backplane execute direct signal conversion with 4-20 mA HART loop protocol loops. Channel-to-channel isolation on the backplane blocks electrostatic and electromagnetic noise between analog input loops, keeping communication lines stable. In thermocouple monitoring systems, cold junction compensation (CJC) is executed at the connected I/O terminal boards to ensure accurate temperature value translations inside the process database.

Frequently Asked Questions

Q: How is the backup battery managed during standard operations? A: The onboard battery requires a minimum of 48 hours of continuous power to reach a full charge. Once fully charged, it maintains the 32 MB main memory for up to 72 hours during complete power failure conditions.

Q: How do the status output contacts operate in the event of a processor fault? A: The FCU status output uses two dedicated terminals (NC, C) that remain closed under normal operating conditions. If the internal diagnostic routine detects an FCU hardware failure, these contacts open instantly to trigger external alarms.

Q: What are the primary communication interfaces on the backplane? A: The unit features dual-redundant V-net control network interfaces alongside dual-redundant ESB bus interfaces, allowing simultaneous data paths to the operator console and the expansion nodes.

Field Installation Guidelines

Earthing and Grounding: Connect the field control unit chassis to a functional instrument ground grid. Ground resistance must measure less than 100 ohms, and the grounding conductor must be kept separate from the plant safety ground system.
Cabinet Ventilation: Maintain a minimum clearance of 100 mm above and below the rack-mounted unit to allow natural convective heat dissipation. Ensure that the cabinet ambient air temperature stays within the specified 0 to 50 deg C range.
Battery Connection: Connect the backup battery jumper cable only after installing the unit in the rack and immediately prior to powering up the system, preventing premature discharge of the storage cells.

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