AINT-14C ABB 68685826 PCB COMPONENTS MC INTERFACE BOARD
1.Overview of the AINT-14C ABB 68685826
The ABB AINT-14C is the main circuit interface board for the ACS800
series inverters, known as the "heart of the inverter." It converts
digital commands from the control board into analog drive signals
required by the power modules, precisely controlling IGBT switching
and achieving smooth regulation of motor voltage and frequency. Its
onboard high-speed 26 MHz processor with 14-bit resolution
completes a complete closed-loop calculation within 1 ms. It also
features quadruple hardware protection for overcurrent,
overvoltage, short circuit, and undervoltage, with a fault response
time of less than 2 μs, effectively locking pulses and uploading
alarm codes. Its modular plug-in design supports hot swapping,
allowing replacement within 10 seconds. It boasts an IP30
protection rating and a corrugated aluminum casing for enhanced
heat dissipation. It operates stably in temperatures ranging from
-20 to +60°C and can operate at altitudes up to 4,000 meters
without derating. Compatible with all ACS800-01/02/04/07 racks, it
seamlessly integrates with AC800F/AC800M DCS systems. It offers
Modbus RTU, Profibus DP, and DeviceNet communication protocols,
facilitating remote start/stop, online parameter modification, and
status monitoring. Measuring 130 × 125 × 20 mm and weighing only
0.15 kg, it is CE and RoHS certified and widely used in industrial
automation applications such as fans, pumps, compressors,
extruders, elevators, and conveyor lines.
2.Core Features:
1. Core Parameters
Order Number: 68685826 (AINT-14C)
Physical Dimensions: ≈ 213 mm × 210 mm × 20 mm; Weight: ≈ 0.13 kg
Operating Voltage: 24 V DC (control side) / 440 V AC (power side
maximum)
Output Switching Frequency: 50 Hz nominal; Processor Clock: 26 MHz
Control Response: Closed-loop Operation Cycle ≤ 1 ms, Protection
Response < 2 µs
Signal Resolution: 14 bits (analog channel)
Channel Capacity: Typical 8–15 configurable I/O channels
(automatically identified by system firmware)
Communication Ports: Onboard RS-485 (Modbus RTU default) / Fiber
Optic Link (AINT-24C redundant)
Environmental Rating: Operating Temperature: 0…+65°C, Humidity:
0–95% RH non-condensing; IP20
Certifications: CE, RoHS, UL 508 (File E214113)
2. Main Functions
Signal Conversion: Converts digital commands from the control board
into analog ±15V pulses required for IGBT driving, achieving
precise PWM output.
Power Control: Directly drives the three-phase inverter module,
implementing V/f, vector, or DTC control strategies.
Multiple Protections:
- Hardware overcurrent, short circuit, overvoltage, undervoltage,
and overtemperature real-time pulse lockout;
- Fault signals are uploaded to the CU via optical fiber/RS-485,
supporting remote diagnosis.
Hot-Swap: Modular slide rail design enables replacement within 10
seconds without removing power cables.
System Compatibility: Seamlessly integrates with the AC 800F, AC
800M, PLCs, and DCSs, supporting optional Profibus and DeviceNet
expansion.
Self-Test and Logging: Power-on self-test and periodic self-test
during operation, with up to 40 fault records saved for easy
traceability.
3. Typical Applications
- ACS800-01/02/04/07 Cabinet Drives
- Fans, pumps, compressors, extruders, elevators, conveyor lines,
etc., with motors ranging from 0.37–250 kW
- Process control applications requiring high dynamic response or
safe, continuous operation
3.Product details pictures
4. Related products
| AINT-02C | AINT-12C |
| AINT-24C | AINT-25C |
| AINT-36C | AINT-48C |
| AINT-58C | AINT-68C |
| AINT-78C | AGDR-61C |
| AGDR-62C | AGDR-71C |
| AGDR-72C | AINP-01C |
| AINP-02C | AIBP-01C |
| APOW-01C | APOW-02C |
| RINT-5511C | RINT-5512C |
