Model designation: BSVM1 20i / Beta i SVU 20.

Output current: 6.8 A rated.

Input supply: 200 to 240 V AC, 3 phase, 50/60 Hz.

Control power: 24 V DC through designated control connector.

Built in power supply: yes, self contained rectifier section.

Communication: FSSB fiber optic, COP10A input and COP10B output.

Encoder interface: JF1 for incremental or absolute encoder motors.

Compatible motors: Beta iS 4/4000, Beta iS 8/3000, and comparable Beta i servo motors.

Compatible controls: 0i MC, 0i MD, and related FSSB enabled CNC configurations.

Cooling: natural convection with internal fan assistance according to build.

Protection class: IP20.

Operating temperature: 0 to 55 °C.

Storage temperature: -20 to 70 °C.

Humidity: 5 to 90 percent relative, non condensing.

Dimensions: approximately 55 mm width, 200 mm height, 185 mm depth.

Weight: approximately 1.6 kg.

Integrated power supply removes dependence on a separate common DC bus.

FSSB optical communication simplifies multi drive chaining.

Digital vector control with position, speed, and current loops.

HRV control algorithm support according to CNC and software version.

Seven segment LED alarm display for local diagnostics.

Ground leakage detection for early motor insulation fault warning.

CNC machining center auxiliary axes.

Fourth axis rotary table drives.

Small and mid size CNC lathe feed axes.

Retrofit projects adding one servo axis to existing FSSB controls.

Compact automation cells requiring independent single axis drives.

6.8 A continuous motor output per amplifier rating.

Optical FSSB command and feedback transfer.

Absolute encoder support for retained position data with battery backup.

Overcurrent, low voltage, overheating, encoder fault, and ground fault protection.

Metal drive enclosure with DIN or panel mounting format.

Internal rectifier, DC bus capacitors, and transistor inverter module.

Control PCB with FSSB interface and current regulation circuits.

Front LED display, fiber ports, encoder connector, and power terminals.

The built in supply rectifies three phase AC to DC bus voltage. The CNC sends position commands through the FSSB optical link. The control board calculates current commands from speed and position errors. The inverter switches DC bus power into controlled three phase output for the servo motor. The encoder returns position feedback, and the drive reports alarm status to the CNC.

Mount inside a clean electrical cabinet with adequate spacing for heat dissipation.

Connect three phase input through a properly rated breaker.

Connect 24 V DC control power to the designated control terminal.

Chain FSSB fiber from the CNC servo card or previous amplifier to COP10A and onward through COP10B.

Connect the motor U/V/W output and encoder feedback using shielded cables.

Assign the FSSB axis number in CNC parameters to match the physical fiber position.

Use only motor and parameter combinations supported by the SVU 20 rating.

Replace the cooling fan if the stop fan alarm appears.

Do not mix this unit with separate bus type Alpha i modules without system design verification.

Check insulation resistance before reconnecting motor cables after repair.

Backup CNC servo parameters before replacing the amplifier.