China Industrial Automation Control Systems manufacturer
Shanghai Fradwell Industrial Automation Co., Ltd.
Shanghai Fradwell Industrial Automation Co., Ltd.
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ACS550 ACS800 ACS880 Inverter Main Board IO Board For Industrial Automation

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Shanghai Fradwell Industrial Automation Co., Ltd.

City: shanghai

Province/State:shanghai

Country/Region:china

Tel:86-21-68060766

Contact Person:
Mr.Angelo Wu View Contact Details

ACS550 ACS800 ACS880 Inverter Main Board IO Board For Industrial Automation
Model Number SMIO-01C/OMIO-01C/RMIO-02C/RDCU-12C
Certification CE、RoHS、UL、cUL、SIL2、PLd
Place of Origin Switzerland
Minimum Order Quantity 1
Price $80 – $480
Payment Terms L/C,D/A,D/P,T/T,Western Union
Delivery Time 3-5Workday
Type Control Board
Warranty Original Manufacturer's Warranty
Pakage Original Pakage
Shipping Term International Express（DHL/FEDEX/TNT/UPS/ARAMEX）/Sea Freight / Air Freight / International Special Line
Freight Charge For Industrial Equipment (E.G., PLC Modules, Inverters..), Shipping Cost Varies By Package Weight/Volume And Delivery Location. Contact Our Sales Team For A Customized Shipping Solution And Quote
Detailed Product Description

Inverter Main Board IO Board | Original, Stable Signal, Fast Repair for Industrial Automation

Inverter Main Board & IO Board Solutions
We supply genuine Inverter Main Board and IO Board components for ACS550, ACS800, and ACS880 series. Our boards deliver stable signal transmission, strong anti-interference capabilities, and fast repair support for industrial automation applications including fans, pumps, conveyors, elevators, and other heavy-duty equipment.
Core Board Functions
Main Board (CPU/Control Board): The central processing unit of the inverter, handling logic operations, parameter storage, control algorithm execution, and communication management. Integrates core CPU, memory, bus interface, and power management modules.
IO Board (Input/Output Board): Manages acquisition and output of external control signals (DI/DO/AI/AO), serving as the physical interface between the inverter and PLC, HMI, pushbuttons, and sensors.
Compatible Series & Board Specifications
Inverter SeriesMain Board / IO Board ModelCore FunctionsInterface Configuration
ACS510 / ACS550SMIO-01C (Digital/Analog Input), OMIO-01C (Digital/Analog Output)Basic start/stop, frequency reference, status feedback; Modbus supported6 DI channels, 2 DO channels (relay); 2 AI channels (0-10V/4-20mA); 1 AO channel
ACS800RDCU-02C/RDCU-12C (Main Control), RMIO-01C/RMIO-02C/RMIO-11C/RMIO-12C (IO Interface)Vector control, DTC (Direct Torque Control); PROFIBUS, DeviceNet optionalMultiple DI/DO, AI/AO, encoder interface, safety functions
ACS880ZCU-12 (Main Control Unit)High-performance motor control, multi-drive coordination; EtherNet/IP, PROFINET supportedExpandable IO modules, hot-swap supported
ACS580SINT4610C (Integrated Main & IO Board)Compact general-purpose inverter; Modbus RTU standard, field bus module optionalIntegrated DI/DO/AI/AO, no additional IO board required
Key Board Models Overview
  • SMIO-01C (ACS550): Input-side IO board for receiving external DI signals and AI analog references. Features 24V DC power supply with opto-isolation for interference resistance.
  • OMIO-01C (ACS550): Output-side IO board providing DO/relay signals and AO (0-10V/4-20mA) for current/frequency feedback output.
  • RMIO-02C (ACS800): Full-featured IO main board integrating DI/DO/AI/AO, encoder interface, and Safe Torque Off (STO) for complex closed-loop control.
  • RDCU-12C (ACS800): Core CPU board running DTC algorithm, processing data, managing parameters, and handling communication protocol stack.
System Operation & Safety Features
  • Signal Path: External PLC/Pushbuttons → IO Board (Opto-isolation & Signal Conditioning) → Main Board CPU (Operation) → Output Commands to Drive Board
  • Communication: Main board integrates protocols (Modbus, PROFIBUS, PROFINET); IO board handles hard-wired signals with expandable field bus capabilities
  • Safety: High-end IO boards support STO (Safe Torque Off) complying with SIL2/PLd safety levels to prevent accidental startup
Selection & Maintenance Guidelines
  • Model Matching: Select original boards according to inverter series; cross-series mixing is not permitted
  • Replacement Procedure: Operate after power-off and discharge; upload parameter backup after replacement; verify terminal wiring and 24V power polarity
  • Anti-Interference: Use shielded twisted-pair cables for analog signals; maintain distance from high-voltage cables; implement isolated design for DI/DO with proper grounding
  • Spare Parts: Verify ABB original models and serial numbers to avoid instability or warranty issues
Configuration Note: Small and medium-power models (ACS510/550/580) typically use integrated IO + CPU boards, while high-power/high-performance models (ACS800/880) utilize separate main control + IO boards for easier expansion and maintenance.
Industrial Applications
  • General Industrial Manufacturing: Conveyor belts, mixers, injection molding machines, printing and dyeing production lines
  • Fan & Pump Systems: Constant pressure water supply, industrial pump stations, tunnel ventilation, cooling systems
  • High-Precision Equipment: CNC machine tools, precision processing equipment, paper machine winding systems
  • Heavy Industry: Metallurgical rolling mills, mine hoists, petroleum and petrochemical compressors, chemical reactors
  • Safety-Critical Scenarios: Elevators, cranes (with STO safety function)
  • Municipal & New Energy: Sewage treatment, heating systems, photovoltaic water pumps, wind power pitch control
Frequently Asked Questions
Are ABB boards the same for overseas and domestic markets?
No, they are not universal. Choose models based on local voltage (110V/220V) to avoid burnout.
How to fix communication fault after replacing the board?
Check model matching first, reload parameters, and inspect the connection bus.
Can I use third-party boards instead of original ABB?
Not recommended. It may cause compatibility issues and void the official warranty.
What to do if IO signal is unstable with sensors?
Use shielded cables, keep away from high-voltage lines, and improve grounding.
Can ZCU‑12 replace RDCU‑12C directly?
No. ZCU‑12 for ACS880, RDCU‑12C for ACS800, cross-series replacement is not allowed.
Product Tags: ACS880 Inverter Main Board   ACS800 Inverter Main Board   ACS550 IO Board  
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