Yokogawa NFAF135-S00 Frequency Input Module

The Yokogawa NFAF135-S00 is an advanced 8-channel frequency input module designed for precise frequency measurement and monitoring in automation systems. It is part of Yokogawa’s FCN (Field Control Node) autonomous controller I/O suite and supports both contact ON/OFF and voltage pulse signals across isolated channels. Engineered for demanding industrial applications, the NFAF135-S00 ensures accurate signal processing and robust isolation for enhanced reliability and system safety.

Technical Specifications

Applications

• Industrial Machinery Monitoring: Measures frequency signals from sensors in rotating equipment.

• Pumps and Motors: Detects speed fluctuations via pulse outputs.

• Energy Management Systems: Measures pulse signals from energy meters for power monitoring.

• Water and Wastewater Treatment: Tracks equipment cycle rates via frequency input.

• Factory Automation: Interfaces with proximity sensors and encoder outputs.

• Oil & Gas: Integrates with turbine meters for flow rate monitoring.

Product Advantages

• High Precision Frequency Detection: Accurate signal acquisition from 0.1 Hz to 10 kHz.

• Galvanic Isolation: Reduces interference, enhancing signal integrity and protecting equipment.

• Versatile Input Compatibility: Supports both contact closures and voltage pulse inputs.

• Modular Integration: Seamlessly installs into FCN autonomous controller systems.

• Robust Construction: Engineered for industrial environments with wide temperature tolerance.

• Simplified Wiring Options: Supports both MIL connector and pressure clamp terminal blocks.

FAQs

Q1: What types of signals can the NFAF135-S00 accept?

A1: It accepts contact ON/OFF signals and voltage pulses (0.1 Hz to 10 kHz).

Q2: Are the input channels isolated?

A2: Yes, each of the 8 channels is galvanically isolated to prevent cross-interference.

Q3: What kind of connector is used for wiring?

A3: The module supports MIL 40-pin connectors and pressure clamp terminals via NFTI3S.

Q4: Does it require an external power supply?

A4: No, it draws power from the FCN system backplane.

Q5: Can this module be used in hazardous environments?

A5: While rugged, specific hazardous certifications should be verified based on installation requirements.

Q6: What is the supported frequency measurement range?

A6: From 0.1 Hz up to 10 kHz.

Q7: Is it compatible with older Yokogawa I/O modules?

A7: It is designed for the FCN platform and may not be backward compatible with legacy non-FCN systems.

Q8: What industries typically use this module?

A8: Manufacturing, utilities, energy, water treatment, and oil & gas sectors.

Q9: Can this module be hot-swapped?

A9: No, power should be removed before replacing or installing the module.

Q10: What kind of diagnostic support does it offer?

A10: Diagnostic capabilities are integrated via the FCN controller, reporting module and channel status.