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Product Overview
The Schneider Electric BCH0802O12A1C is an AC servo motor from the Lexium 23 Plus motion control range. It belongs to the BCH 80 mm flange family and is configured for applications requiring controlled rotary motion, repeatable positioning, and coordinated operation with a compatible servo drive.
This model has a rated output power of 0.75 kW and a nominal speed of 3000 rpm. Its keyed shaft provides a mechanical connection for compatible couplings, pulleys, or other transmission components. The motor uses a 20-bit incremental encoder to return position and speed feedback to the servo drive, allowing the drive to regulate motor operation according to the commanded motion profile.
The BCH0802O12A1C is supplied without a holding brake and uses natural convection cooling. Its straight cable connection and Asian-standard mounting flange make it suitable for integration into compatible machine assemblies. The motor is particularly relevant to automated machinery where acceleration, deceleration, positioning accuracy, and repeatable movement need to be coordinated through a servo control system.
In a typical Lexium 23 Plus installation, the motor works with a matching 0.75 kW servo drive. The drive processes motion commands and encoder feedback, while the motor converts the resulting electrical output into mechanical rotation. Correct matching of motor power, supply voltage, feedback configuration, and shaft connection is essential when selecting this model for machine replacement or new equipment integration.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Model | BCH0802O12A1C |
| Product Type | AC Servo Motor |
| Product Series | Lexium 23 Plus |
| Motor Family | BCH |
| Motor Flange Size | 80 mm |
| Continuous Power | 0.75 kW |
| Rated Supply Voltage | 220 V |
| Network Number of Phases | Single Phase |
| Nominal Speed | 3000 rpm |
| Maximum Mechanical Speed | 5000 rpm |
| Continuous Stall Current | 5.1 A |
| Nominal Torque | 2.39 N·m |
| Peak Stall Torque | 7.16 N·m |
| Feedback Type | 20-bit Incremental Encoder |
| Shaft End | Keyed |
| Shaft Diameter | 19 mm |
| Shaft Length | 37 mm |
| Key Width | 6 mm |
| Holding Brake | Without |
| Cooling Method | Natural Convection |
| Mounting Support | Asian Standard Flange |
| Torque Constant | 0.47 N·m/A |
| Rotor Inertia | 1.13 kg·cm² |
| Maximum Radial Force | 245 N |
| Maximum Axial Force | 98 N |
| Protection Rating | IP40 |
| Operating Temperature | 0–40°C |
| Compatible Servo Drive | Lexium 23 Plus, 0.75 kW configuration |
| Length | 138.3 mm |
| Weight | 3 kg |
Product Features
750 W Servo Motor Output
The 0.75 kW rating suits machine axes requiring controlled rotary motion and repeatable positioning. The motor can deliver a nominal torque of 2.39 N·m under its specified operating conditions.
20-bit Incremental Encoder
The integrated incremental encoder supplies position feedback to the servo drive. This feedback supports closed-loop speed and position regulation during acceleration, deceleration, and continuous operation.
Keyed Shaft Configuration
The keyed shaft provides a mechanical interface for compatible couplings and transmission components. The shaft and key dimensions must be considered when selecting the connected mechanical assembly.
No Holding Brake
This version is supplied without an integrated holding brake. Applications requiring the motor to hold a vertical or gravity-loaded axis at standstill need an appropriate external holding arrangement or a motor variant with a brake.
3000 rpm Nominal Speed
The motor operates at a nominal speed of 3000 rpm and supports a maximum mechanical speed of 5000 rpm. The actual operating speed depends on the servo drive configuration and application load.
Natural Convection Cooling
The motor uses natural convection for heat dissipation. Installation conditions, ambient temperature, operating duty, and mechanical loading should be considered to maintain appropriate thermal conditions.
80 mm Asian Standard Flange
The mounting configuration supports installation in compatible machine assemblies using the specified flange arrangement.
Lexium 23 Plus Compatibility
The BCH0802O12A1C belongs to the Lexium 23 Plus motion control range and is intended for operation with a compatible servo drive configuration.
Working Principle
The BCH0802O12A1C operates as the mechanical actuator in a closed-loop servo positioning system. The servo drive receives motion commands from the machine controller and regulates the electrical power supplied to the motor according to the required speed, position, and torque.
When a movement command is issued, the drive generates the appropriate motor output. The motor’s electromagnetic field produces rotational torque, causing the rotor and connected shaft to turn. Mechanical movement is then transferred to the machine through a compatible coupling, belt, pulley, or other transmission mechanism.
The integrated 20-bit incremental encoder provides feedback during operation. It reports rotor movement to the servo drive, allowing the controller to compare actual motor behavior with the commanded motion. If the measured position or speed differs from the target, the drive adjusts its output to correct the deviation.
For example, in an automated packaging machine, the controller may command the motor to rotate a feeding mechanism through a specified movement. The servo drive controls acceleration and deceleration, while encoder feedback helps the system maintain the required position before the next machine operation begins.
The motor’s 0.75 kW output and nominal 3000 rpm speed make it suitable for compatible motion axes requiring controlled rotation. However, the actual torque-speed performance depends on the servo drive, supply conditions, and mechanical load.
Typical Motion Control Path:
PLC / Motion Controller → Lexium 23 Plus Servo Drive → BCH0802O12A1C Servo Motor → Mechanical Transmission → Machine Axis
Feedback Path:
BCH0802O12A1C Encoder → Servo Drive → Position and Speed Regulation
Role in Lexium 23 Plus Motion Control Architecture
Within a Lexium 23 Plus system, the BCH0802O12A1C acts as the motor-side actuator. It receives controlled electrical output from the servo drive and converts it into mechanical movement for the machine axis.
The servo drive handles current regulation, motor control, and encoder feedback processing. The PLC or machine controller supplies the motion commands and coordinates the servo axis with other machine operations.
The encoder feedback is particularly important during positioning sequences. It allows the servo drive to monitor actual shaft movement rather than relying only on the commanded motor output.
| System Component | Function |
|---|---|
| PLC / Motion Controller | Generates motion commands and coordinates machine sequences |
| Lexium 23 Plus Servo Drive | Regulates motor current, speed, and position |
| BCH0802O12A1C Servo Motor | Converts electrical power into controlled mechanical rotation |
| 20-bit Incremental Encoder | Supplies motor position and speed feedback |
| Motor Power Cable | Connects the servo drive output to the motor |
| Encoder Cable | Transmits feedback signals to the servo drive |
| Mechanical Coupling | Transfers motor torque to the driven mechanism |
| Linear or Rotary Load | Performs the required machine movement |
Industrial Applications
| Application | Motor Function |
|---|---|
| Packaging Machinery | Controls feeding, sealing, indexing, and product positioning mechanisms |
| Automated Assembly | Drives rotary and positioning axes during component assembly |
| Material Handling | Controls compatible conveyor and transfer mechanisms |
| Printing Equipment | Supports synchronized movement and positioning of machine rollers |
| Labeling Machines | Controls product feeding and positioning during labeling operations |
| Textile Machinery | Drives controlled rotary mechanisms and coordinated machine axes |
| Electronics Manufacturing | Provides positioning control for automated handling and assembly equipment |
| General Industrial Machinery | Operates servo-controlled mechanisms requiring repeatable rotary movement |
Installation and Maintenance
- Verify the motor model: Confirm that the replacement motor is BCH0802O12A1C. Check the complete model code rather than selecting a motor based only on its 80 mm flange or 750 W rating.
- Check servo drive compatibility: Verify that the connected Lexium 23 Plus drive supports the motor’s 0.75 kW configuration and electrical requirements.
- Inspect the mounting flange: Check the mounting surface, fixing points, and alignment before installing the motor into the machine assembly.
- Check the shaft connection: Confirm that the keyed shaft matches the coupling or transmission component. Inspect the keyway and mating parts for wear or mechanical damage.
- Verify electrical connections: Check the motor power and encoder connections against the servo drive wiring configuration before energizing the system.
- Inspect the encoder cable: Ensure that the feedback cable is correctly connected and routed separately from power wiring where required to reduce electrical interference.
- Confirm brake requirements: This motor version does not have an integrated holding brake. Evaluate the machine’s stopping and load-holding requirements, particularly for vertical axes.
- Check mechanical alignment: Align the motor shaft with the driven equipment to avoid excessive radial loading, vibration, and premature bearing wear.
- Verify operating parameters: Configure the servo drive for the correct motor power, encoder feedback, voltage, and motion control settings.
- Monitor operating temperature: Check motor temperature during commissioning and normal operation. Confirm that the installation allows adequate natural convection cooling.
- Inspect operating behavior: Monitor vibration, unusual noise, positioning deviations, and encoder feedback errors during machine operation.
- Maintain installation records: Record the motor model, drive configuration, wiring arrangement, operating parameters, and maintenance history for future servicing.
Compatible System Components
| Component | Product Type | Application |
|---|---|---|
| Lexium 23 Plus Servo Drive | AC Servo Drive | Controls motor current, speed, and position |
| Lexium 23 Plus Motion Controller | Motion Control Equipment | Coordinates servo movement and machine sequences |
| Schneider PLC | Programmable Logic Controller | Provides machine control and motion commands |
| BCH0802O12A1C | 750 W AC Servo Motor | Executes controlled rotary movement |
| BCH Series Encoder Cable | Servo Feedback Cable | Transmits encoder signals to the drive |
| BCH Series Motor Power Cable | Servo Motor Power Cable | Connects the motor to the servo drive |
| Servo Motor Coupling | Mechanical Transmission Component | Transfers motor torque to the machine axis |
| Planetary Gearbox | Mechanical Speed Reducer | Adjusts output speed and torque for the driven load |
Recommended Related Models
| Model | Product Description |
|---|---|
| BCH0802O02A1C | Lexium 23 Plus 80 mm Servo Motor, Smooth Shaft, Without Holding Brake |
| BCH0802O12F1C | Lexium 23 Plus 80 mm Servo Motor, Keyed Shaft, With Holding Brake |
| BCH0802O22A1C | Lexium 23 Plus 80 mm Servo Motor, Smooth Shaft with Oil Seal, Without Holding Brake |
| BCH0802O22F1C | Lexium 23 Plus 80 mm Servo Motor, Smooth Shaft with Oil Seal, With Holding Brake |
| BCH0802O32A1C | Lexium 23 Plus 80 mm Servo Motor, Keyed Shaft with Oil Seal, Without Holding Brake |
| BCH0801O12A1C | Lexium 23 Plus 80 mm Servo Motor, 400 W, Keyed Shaft, Without Holding Brake |
Key Advantages
- 0.75 kW rated output for controlled machine-axis operation.
- 20-bit incremental encoder for motor feedback.
- Keyed shaft for compatible mechanical transmission.
- 3000 rpm nominal operating speed.
- Maximum mechanical speed of 5000 rpm.
- 80 mm Asian-standard mounting flange.
- Natural convection cooling.
- Compatible with the Lexium 23 Plus motion control range.
Technical FAQs
What is the difference between BCH0802O12A1C and BCH0802O12F1C?
Both models share the BCH0802 motor configuration, including the keyed shaft and 20-bit incremental encoder. The main difference is the holding brake: BCH0802O12A1C is supplied without a brake, while BCH0802O12F1C includes one. The brake version is worth considering when the application requires the motor shaft to be held at standstill.
Can the BCH0802O12A1C operate with a 0.75 kW Lexium 23 Plus servo drive?
Yes. The motor is specified for a 0.75 kW Lexium 23 Plus drive configuration. Drive selection should also account for the supply voltage, phase arrangement, rated current, and motor feedback requirements.
What does the 20-bit incremental encoder contribute to motor operation?
The encoder supplies detailed position feedback to the servo drive. This allows the drive to monitor actual shaft movement and regulate the motor according to the commanded position and speed. It is particularly useful in applications involving repeated positioning and coordinated machine movements.
Is the BCH0802O12A1C suitable for applications requiring a holding brake?
The motor itself does not include an integrated holding brake. For vertical axes or other applications where a load must remain mechanically held when the motor is stopped, an appropriate external holding arrangement or a compatible brake-equipped motor variant should be considered.