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Product Description
The NFDV551-P10 digital output module is a high-density discrete output unit developed by Yokogawa Electric Corporation for use in CENTUM VP distributed control systems and ProSafe-RS safety platforms. As part of the FIO (Field Input/Output) architecture, this module delivers deterministic 24 V DC ON/OFF signals to field devices that require reliable and electrically isolated control.
The NFDV551-P10 is designed for current-sink operation and integrates channel-level isolation to reduce noise coupling and protect system electronics. Its compact mechanical design allows efficient use of cabinet space while maintaining clear status visibility for maintenance and troubleshooting.
Functional Overview
The NFDV551-P10 provides 32 independent digital output channels, each capable of driving typical low-power industrial loads such as solenoid valves, interposing relays, indicator lamps, and actuator interfaces. Output status indication is integrated, enabling operators and engineers to confirm signal states directly at the module.
This module is intended exclusively for Yokogawa control system backplanes and uses dedicated system connectors to ensure correct power distribution and signal integrity.
Technical Specifications
- Model: NFDV551-P10
- Module Type: Isolated digital output module
- Output Channels: 32
- Output Mode: Current sink
- Rated Output Voltage: 24 V DC
- Permissible Load Voltage Range: 20.4 to 26.4 V DC
- Maximum Load Current: 100 mA per channel at 26.4 V DC
- Output ON Voltage Drop: Maximum 2 V DC
- Output OFF Leakage Current: Maximum 0.1 mA
- Isolation Strength:
- 2 kV AC between output signals and system circuitry
- 500 V AC between output common groups
- Status Indication: Individual ON/OFF LED indication per channel
- Dimensions: 32.8 × 107.5 × 130 mm
- Weight: 0.2 kg
- Suffix Definition:
- P: Standard environmental specification
- 1: Equipped with status indication
- 0: Basic configuration
Typical Applications
The NFDV551-P10 is commonly deployed in:
- Process automation control panels
- Safety-related shutdown systems
- Discrete control of valves and dampers
- Relay and interposing interface driving
- Alarm lamps and signaling devices
It is suitable for industries such as oil and gas, petrochemical processing, power generation, and large-scale manufacturing plants.
Installation and Engineering Notes
This module requires correct wiring for current-sink output operation. Field device power must be supplied externally within the specified voltage range. The NFDV551-P10 is not designed for use in third-party PLC systems without verified electrical and mechanical compatibility.
Frequently Asked Questions
Q: Does the NFDV551-P10 support redundant system architectures?
A: Yes. When installed within a redundant Yokogawa FIO system, the module operates seamlessly as part of a fault-tolerant I/O configuration.
Q: Can this module drive high-current solenoids directly?
A: No. Each channel is limited to 100 mA. Higher-current loads require interposing relays or external drivers.
Q: What distinguishes NFDV551-P10 from relay output modules?
A: The NFDV551-P10 uses semiconductor outputs, offering faster switching, longer service life, and lower maintenance compared to mechanical relay modules.
