NFDV551-P11 | Yokogawa Digital Output Module

The NFDV551-P11 is a 32-channel digital output module from Yokogawa. It outputs transistor contact signals and operates with a rated applied voltage of 24 V DC. In addition, the module delivers reliable performance in industrial environments, featuring flexible power supply options, fast response times, and robust isolation.

Key Features

• Rated Applied Voltage: The module operates at 24 V DC.
• Load Voltage: It supports 24 V DC with 50 mA per channel.
• Field Power Supply Voltage Range: The module accepts a voltage range from 20.4 V to 26.4 V DC.
• Output ON Voltage: The output ON voltage is capped at 2 V DC.
• Leak Current (Output OFF): The leak current is minimal, less than 0.1 mA.
• Output Format: This module uses a current sink output, ensuring efficient signal transfer.
• Maximum Load Current: Each channel can handle up to 100 mA at 26.4 V DC.
• Withstanding Voltage:
  • For output signal and system: It withstands 2000 V AC for 1 minute.
  • Between commons: The module withstands 500 V AC for 1 minute, with common minus side every 16 channels.

Functions

• Status Output: The module provides ON/OFF status output functionality, allowing quick system status checks.
• Output Fallback Options: You can configure the fallback action as follows:
  • HOLD: The current output state remains unchanged during fallback.
  • OFF: All output channels reset to OFF during fallback.
  • NO: No fallback action occurs.
• Output Response Time: The module responds in 3 ms or less for status output, ensuring fast and efficient signal processing.

Current Consumption

• Maximum Consumption: The module requires 700 mA at 5 V DC.
• Field Power Supply: It consumes 60 mA at 24 V DC from the field power supply.

Weight

The module weighs 0.2 kg, making it lightweight and easy to handle during installation.

External Connections

• Pressure Clamp Terminal: Easy to connect and secure, ensuring reliable operation.
• MIL Connector Cable: The module supports MIL connector cables; however, the withstanding voltage depends on the electrical specifications of the connected cable.

Important Notes

• Field Power Supply: An external 24 V DC field power supply is required for operation.
• Diode Connection: A diode must be connected when driving DC relays to protect the system.
• Fallback Detection Time: The fallback detection time is 4 seconds.
• Fallback Settings: You must choose the fallback action (HOLD, OFF, or NO) for all channels.

Model and Suffix Codes

• Model: NFDV551, 32-channel, 24 V DC, Isolated Digital Output Module.
• Suffix Codes:
  • -P: Standard type.
  • 1: Includes ISA Standard G3 option.

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