Description
The ABB AINT-14C (68685826) is a specialized Main Circuit (MC) interface board configured internal to high-power ABB ACS800 industrial inverter modules. Positioned physically between the drive’s primary control unit (such as an RDCU orRMIO board) and the gate driver electronics, the AINT-14C provides critical signal routing, galvanic isolation, and structural integration for high-power IGBT switching paths. It is an essential component found within various modular and liquid-cooled configurations, notably the ACS800-104 inverter modules.
Commercial and Availability Status
- Product Condition: New Original (Factory Sealed) or Refurbished/Tested exchange components
- Legacy Note: Replaces obsolete predecessor part number 64715810 (AINT-12C)
- Warranty: 12-Month Industrial Warranty
- Estimated Lead Time: 1–3 business days
- Pricing Note: Price varies based on active inventory pools and plant breakdown urgency. Contact us for a firm, up-to-date quotation.
Technical Specifications
| Parameter | Value |
| Model Number | AINT-14C |
| ABB Part Number | 68685826 (Also referenced as 3AFE68685826) |
| Component Type | Main Circuit (MC) Interface Board |
| Compatibility Profile | ACS800-104 / ACS800-104LC (Frame Sizes R7i, R8i and multi-module configurations) |
| Input Bias Voltage | 24 V DC (Drawn from internal drive power distribution bus) |
| Board Treatment | Coated PCB (Industrial-grade conformal coating for moisture/dust resilience) |
| Form Factor Dimensions | 130 × 125 × 20 mm |
| Net Weight | 0.11 kg (0.24 lbs) |
| Cooling Profile | Passive via internal drive module airflow |
| Operating Temperature | +0 to +55 °C (Up to +85 °C passive thermal allowance at component junction layer) |
| Customs Tariff Code | 85049090 |
Hardware Integration & Field Constraints
Critical Supersession Guidelines
The AINT-14C directly supersedes the older AINT-12C (64715810) revision. When performing a field replacement on an existing ACS800 system running legacy AINT-12C variants, verify whether any software parameters require adjustment or if the ribbon connectors exhibit any brittleness from high thermal wear within the chassis.
Conformal Coating Standard
This board comes standard with a protective chemical coating. This standard layer is mandatory for installation within severe power conversion environments, preventing catastrophic tracking faults across tracking paths exposed to conductive dust, ambient relative humidity, and localized pollution within the VFD enclosure.
Field Engineering Note: Always handle the AINT-14C board utilizing a grounded ESD wrist strap fastened to the drive frame. The onboard operational amplifiers and logic ICs are highly vulnerable to electrostatic discharge. Ensure that all fiber-optic and parallel ribbon cables leading to the AGDR gate driver boards are seated securely before applying control power. Mismatched or loose cable connections will induce immediate “Datalink” or “Short Circuit” fault loops upon power-up.
Frequently Asked Questions
Which specific drive kits require the AINT-14C module?
The board acts as a standardized replacement component inside multiple ABB preventive maintenance and assembly kits for sub-assemblies. This includes the ACS800-104 R8i and ACS800-104LC R7iLC/R8iLC preventative maintenance kits spanning levels 1 through 8.
What are the main signs that an AINT board needs replacement?
A failing or compromised interface board generally manifests as inter-board communication timing out, fiber optic transmission loss errors, unexplainable gate driver faults, or failure to communicate downstream status telemetry back to the RMIO control board.
Does the AINT-14C require individual firmware flashing?
No. The AINT-14C operates primarily as an intermediate hardware connection and conditioning layer. It functions transparently based on the application firmware hosted on the master drive control unit (e.g., RDCU or standard system controller). Confirm proper alignment and module hardware configurations inside the drive parameters during initial commissioning.
