NFDV551-P11 Yokogawa CENTUM VP Datasheet & Technical Manual

Digital Output Module | Yokogawa NFDV551-P11 CENTUM VP

Digital Output Module | Yokogawa NFDV551-P11 CENTUM VP

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Yokogawa NFDV551-P11 CENTUM VP FCU Power Supply Module Configured for 24 VDC voltage regulation and digital signal switching in CENTUM...

Código: NFDV551-P11

Manufacturer: Yokogawa
Product No.: NFDV551-P11
Product Type: Power Supply Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 400g
Shipping port: Xiamen
Warranty: 12 months

Descripción Reseñas

Yokogawa NFDV551-P11 CENTUM VP FCU Power Supply Module

Configured for 24 VDC voltage regulation and digital signal switching in CENTUM VP architectures, the Yokogawa NFDV551-P11 (NFDV551 FCU Power Supply Module) provides direct physical/electrical execution. Converting 100-240 VAC mains input into a highly regulated DC output, the unit drives Field Control Unit (FCU) backplanes and associated digital output loads. The hardware supports dual-redundant pairing to prevent logic bus voltage drops during heavy industrial I/O switching cycles.

Suffix Breakdown & Model Matrix

Suffix Code	Specification	Functional Description
NFDV551	Base Model	Digital Output / FCU Power Supply Module
-P	Hardware Style	Configured for redundant system architectures
11	Revision Code	Standard firmware and electrical isolation configuration

Hardware Specifications

Parameter	Specification
Model	NFDV551-P11
Brand	Yokogawa
Origin	USA / Japan
Weight	0.4 kg net (13.6 oz)
Dimensions	33 mm W x 127 mm H x 147 mm D
Operating Temp	0 to +55 deg C
Power Consumption	Converts 100-240 VAC to 24 VDC (Up to 5 A output)
Efficiency	>= 85% at full load
Isolation	Galvanic isolation between AC primary and DC secondary
Protection Limits	Integrated overvoltage, overcurrent, and short-circuit suppression
Redundancy	Dual redundant operation supported via backplane architecture

Galvanic Isolation & 4-20 mA HART Loop Protection

The NFDV551-P11 incorporates strict galvanic isolation barriers separating the high-voltage AC mains input from the sensitive 24 VDC system backplane. When powering CENTUM VP racks housing analog modules that process 4-20 mA HART loop protocol frequencies or millivolt CJC (cold junction compensation) signals, the regulated DC output prevents common-mode noise propagation. This primary-to-secondary isolation ensures that switching transients and ground loops do not corrupt channel-to-channel isolation integrity across adjacent high-density I/O node cards.

Frequently Asked Questions

Q: How does the module handle load sharing in a dual-redundant configuration?

A: In a redundant pair, both NFDV551-P11 modules share the backplane load. If one unit experiences an internal fault or loss of AC input, the secondary module instantly assumes the full 5 A current demand without DC bus voltage interruption or switching latency.

Q: Is hot-swapping supported for this module?

A: Yes, if the FCU chassis is configured with dual-redundant power supplies. A single faulted module can be unseated and replaced while the rack remains energized, allowing continuous deterministic logic execution.

Q: What mechanisms protect the backplane from external field shorts?

A: The internal circuitry features active overcurrent and short-circuit protection. If the DC draw exceeds the 5 A limit, the module automatically clamps the output to prevent thermal damage to the switching components and system bus pins.

Field Installation Guidelines

Chassis Seating: Insert the module firmly into the designated FCU power slot. Secure the top and bottom retention screws to a maximum torque of 0.6 Nm to ensure proper grounding via the backplane chassis rail.
Terminal Wiring: Strip the AC input conductors to exactly 8 mm and terminate using insulated ferrule crimps. Bare wire insertion is prohibited to prevent stray strand arcing across the 100-240 VAC terminals.
Grounding Protocol: Bond the module's protective earth (PE) terminal directly to the cabinet ground bar using a low-impedance copper conductor (minimum 14 AWG) to dissipate surge voltage limits.
Thermal Convection Clearance: Ensure a minimum vertical clearance of 50 mm above and below the FCU node assembly. Natural convection must be maintained to keep the internal component ambient limits between 0 and +55 deg C.

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