NINT-68C ABB Bailey Analog Input Module
Brand：ABB Model number：NINT-68C
Country of origin: Sweden Product weight：0.55KG
HS code：8517623990
Product Details：
Product Dimensions：
The ABB NINT-68C is a specialized Application Interface Board primarily used within the ABB ACS 600 and ACS 800 series high-power variable frequency drives (VFDs). While often associated with large-scale DCS environments like the ABB Bailey Infi 90 due to system integration, it serves as a critical hardware link between the main drive control unit and the power inverter modules.
The NINT-68C functions as the communication and signal processing bridge within a drive system. Its primary role is to convert control signals from the Application and Motor Control (AMC) board into the specific gate-driving signals required by the inverter's power semiconductors. It typically utilizes fiber optic technology for internal data transmission to ensure high-speed performance and total immunity to the high levels of electromagnetic interference (EMI) found in power conversion cabinets.
Manufacturer: ABB
Product ID: NINT-68C (Common variations include part codes 61336125F and 61426850B)
Board Type: Application Interface / Inverter Control Board
Compatibility: Designed for ACS 600 MultiDrive and ACS 800 series frequency converters
Communication Interface: Fiber optic links for high-speed signal synchronization
Mounting Type: Integrated PCB rack mounting or panel integration within the drive unit
Gross Weight: Approximately $2.0 \text{ kg}$ to $3.0 \text{ kg}$ depending on the specific revision and protective packaging
Operating Voltage: Internal logic levels typically supplied by the drive’s internal power supply unit
High-Speed Signal Integrity: The use of fiber optic interfaces allows for near-instantaneous communication between the control brain and the power stage, which is essential for precise motor torque and speed regulation.
Galvanic Isolation: Fiber optic connections provide complete electrical isolation, protecting the sensitive control electronics from high-voltage transients in the power stage.
Industrial Durability: Engineered with high-standard electronic components, the board is built to withstand the thermal stress and vibrations common in heavy industrial environments.
Seamless System Integration: As a genuine ABB component, it ensures full compatibility with the firmware and diagnostic routines of the ACS drive series, facilitating easier troubleshooting and system maintenance.
Capacitor Discharge Danger: Before attempting to install or remove the NINT-68C, you must disconnect all power sources. You must wait at least 5 minutes (or the time specified in the drive manual) to allow the intermediate circuit capacitors to discharge to a safe voltage level.
ESD Sensitivity: This board contains highly sensitive CMOS components. Always use a grounded wrist strap and follow standard Electrostatic Discharge (ESD) prevention procedures during handling to avoid permanent latent damage.
Fiber Optic Care: The fiber optic connectors and cables are fragile. Ensure they are clean and not bent beyond their minimum bend radius, as signal attenuation can lead to drive faults or erratic behavior.
Professional Installation: Maintenance and replacement should only be performed by qualified personnel familiar with ABB high-power drive systems and safety protocols.
The NINT-68C is found in large-scale industrial applications where precise motor control and high power density are required. Typical applications include:
Metals and Mining: Used in rolling mills, hoists, and conveyor systems where motor synchronization is critical.
Pulp and Paper: Controlling the speed of large sectional drives in paper machines to maintain consistent tension and quality.
Oil and Gas: Powering large pumps, compressors, and fans within refinery and extraction sites.
Marine and Offshore: Integrated into propulsion drives and winch controls on large vessels and drilling platforms.
Power Generation: Used in excitation systems and auxiliary motor controls within power plants, often interfaced with the broader Bailey Infi 90 or Symphony Plus control networks.
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