SMTBD1/1A-220/08 - Speed amplifier Module - INFRANOR

INFRANOR SMTBD1/1A-220/08 variable speed drive, SMT-BD1 series

The SMTBD1/1A-220/08INFRANOR SMT-BD1 digital servo variable speed drive family designed for precise control of sinusoidal AC brushless motors. Targeted at maintenance teams, machine builders, and retrofit projects, this drive addresses speed and torque regulation needs where reliability, commissioning traceability, and deterministic behavior are mandatory. The SMT-BD1 architecture combines a fast d-q current vector control with a robust analog command interface, ensuring stable performance from low speed to high speed operation. Within the series, units are available for 220 VAC or 400 VAC mains. A high-efficiency PWM stage, rapid current loop update, and built-in encoder emulation streamline integration with PLC or CNC controls. For plants facing obsolescence of legacy servo drives, this module provides a technically consistent replacement path while preserving existing control philosophies based on ±10 V references and discrete I/O. Compact mechanical dimensions in the 230 V version (200 x 199 x 65 mm) facilitate panel upgrades without extensive redesign, while diagnostics via LEDs and RS-232 help reduce commissioning time and mean time to repair.

Technical specifications

• Manufacturer reference: SMTBD1/1A-220/08
• Series: SMT-BD1 digital servo drive
• Manufacturer: INFRANOR
• Type: Variable speed drive for AC brushless servomotors
• Input supply: 220 VAC or 400 VAC mains, series-dependent
• Output stage: Three-phase PWM bridge for sinusoidal commutation
• Output current range (series): Adjustable from 4 to 100 Arms on 220 V units, 15 to 60 Arms on 400 V units
• Motor speed capability: Typically 100 to 14,000 rpm depending on motor and variant
• Control method: d-q vector current control with PI regulators
• Switching frequency: 10 kHz PWM
• Current loop update: 50 µs digital current loop
• Speed/current command: ±10 V analog input, 12-bit resolution standard, 16-bit optional
• Monitoring output: ±10 V analog for real-time supervision
• Encoder emulation: Quadrature A/B outputs, programmable up to 8192 ppr at 900 rpm
• Digital I/O: Opto-isolated inputs for Enable, limit switches, CI, CVO, Reset, plus relay outputs
• Functional modes: Interpolated position (2 to 20 ms), homing, speed profile, low-speed safe mode
• Auto-tuning: Three-band, two-filter configuration for dynamic optimization
• Communication: RS-232, 4800/9600/19200 baud
• Diagnostics: LED indicators and RS-232 reporting for fault analysis
• Mechanical size (230 V version): 200 x 199 x 65 mm

SMT-BD1 series overview

The SMT-BD1 family from INFRANOR is engineered for motion control tasks that require stable speed regulation, precise torque control, and deterministic transitions between speed and position profiles. The platform supports traditional analog command chains, easing direct coupling with PLC, CNC, or motion controllers that output ±10 V references. For brownfield sites, this compatibility minimizes architecture changes while restoring productivity on aging equipment. A combination of high PWM frequency, fast current regulation, and encoder emulation makes the SMT-BD1 a fit for multi-axis lines where master encoders or virtual line shafts are implemented.

• Speed-centric operation: Use as a servo variable speed drive with analog speed or current references, benefiting conveyor, unwinding, and feeding mechanisms.
• Position-capable features: Interpolated position mode and homing allow indexing, alignment, or synchronized moves without overhauling the control cabinet.

Across the series, current ratings and mains options cover a wide application window. The achievable mechanical power depends on the selected current rating and the motor nominal voltage. For exact sizing, pair the drive with the motor datasheet and thermal limits of the application.

Industrial applications

This variable speed drive integrates into diverse B2B environments that rely on accurate motion under continuous duty. It is technically aligned with processes where quick response, repeatability, and fine speed stability improve quality and throughput.

• Packaging and converting: Web handling, dancer-controlled sections, feeders, and seal jaw synchronization.
• Conveying and handling: Belt and roller conveyors, indexing tables, pick-and-place axes.
• Machine tool and CNC auxiliaries: Feed drives, tool changers, spindles within the series speed envelope.
• Textile and winding: Bobbin drives, tension-regulated winders with encoder emulation toward the PLC.
• Printing and labeling: Register control, synchronized nip rollers, and mark-to-mark adjustments.

Integration and communication

Commissioning is carried out via the RS-232 interface with selectable baud rates, enabling parameter backup and fault retrieval for maintenance traceability. The ±10 V analog input simplifies drop-in replacement where existing PLC or motion controllers provide speed or current setpoints. The dedicated monitoring output supports live supervision of speed or current on SCADA panels or oscilloscopes during tuning. Opto-isolated inputs for Enable, limit switches, CI, CVO, and Reset, along with relay outputs, ensure deterministic interlocking with safety and sequencing logic.

The encoder emulation output delivers quadrature A/B signals with programmable resolution, up to 8192 ppr at 900 rpm, allowing the upstream controller to close position or velocity loops without reengineering the feedback infrastructure. Functional modes such as interpolated position, homing, speed profile, and low-speed safe mode add flexibility for indexing and alignment tasks while preserving the primary role as a servo variable speed drive. Auto-tuning with three bands and two filters accelerates startup and helps achieve stable dynamics under varying load inertia.

Availability and warranty

Standard Exchange Industry supplies the INFRANOR SMTBD1/1A-220/08 as part of a complete service offering: exchange, refurbished supply, or repair. All units are functionally tested on dedicated benches and shipped worldwide in 24 to 72 hours according to stock and service selection. Warranty coverage ranges from 6 to 24 months depending on the chosen service. If you need assistance with cross-references or sizing within the SMT-BD1 range, our technical team supports you in matching current rating, mains voltage, and control mode to your application constraints.