SMTBD1/1M-220/30 - Speed amplifier Module - INFRANOR

INFRANOR SMTBD1/1M-220/30 variable speed drive, SMT-BD1 series

The variable speed drive with manufacturer reference SMTBD1/1M-220/30 belongs to the SMT-BD1 servo amplifier series from INFRANOR. This series targets motion applications that require accurate torque and speed control on AC sinusoidal brushless motors, using resolver feedback for robust performance in industrial environments. The module is designed for integration into existing automation architectures where deterministic response, fine speed resolution, and stable regulation are essential, such as packaging machinery, handling systems, winders, and machine tools. With a 310 VDC DC bus (operational range 270 to 340 VDC), an analog ±10 V speed command input, and programmable acceleration and deceleration ramps, the SMT-BD1 platform provides predictable behavior across a wide operating envelope. Auto-configuration and auto-tuning shorten commissioning while an EEPROM stores parameters for consistent restart and maintenance procedures. The result is a servo-drive solution that aligns with B2B requirements for uptime, maintainability, and lifecycle support.

Technical characteristics

• Manufacturer reference: SMTBD1/1M-220/30
• Series: SMT-BD1
• Manufacturer: INFRANOR
• Type: PWM servo drive module for AC sinusoidal brushless motors
• DC bus supply: 310 VDC nominal, operating range 270 to 340 VDC
• Speed command input: Analog ±10 V
• Control mode: Direct torque and speed regulation with resolver feedback, speed regulator with PI² control
• Acceleration/deceleration: Programmable ramp 0 to 30 s
• Maximum motor speed: Adjustable from 100 to 14,000 rpm
• Speed range: Up to 32,768:1 with 16-bit command input
• Feedback: Resolver sensor
• Encoder emulation: Quadrature A/B output with programmable marker, up to 8,192 ppr
• Position accuracy: 8 arc minutes + 1/4 point
• Form factor: 6U double Eurocard, separate power board with IGBTs and logic board with DSP
• Commissioning: Auto-configuration and auto-tuning
• Parameter management: Full parameter set via serial link, saved in EEPROM

SMT-BD1 series overview

The SMT-BD1 family is engineered for resolver-based servo control where immunity to noise, stability at low speeds, and consistent torque delivery are priorities. Based on a DSP-controlled PWM stage with IGBT transistors, the amplifier regulates motor current and speed with a PI² algorithm, ensuring linear response and repeatable dynamics in closed-loop operation. The 6U double Eurocard construction simplifies cabinet integration while separating the power board from the logic board to improve thermal behavior and serviceability. The architecture supports analog command profiles, deterministic ramps, and encoder emulation to interface with motion controllers or PLCs that expect quadrature signals. In applications where a variable frequency drive must also act as a servo-variateur, the SMT-BD1 combines high-resolution speed control with rugged feedback processing, meeting the demands of continuous-duty lines as well as cyclic motion. Parameters are stored in non-volatile memory, which streamlines maintenance and reduces downtime after power loss or module replacement.

• Speed and torque focus: Optimized for closed-loop velocity and torque regulation using a resolver
• Signal compatibility: Analog ±10 V command and quadrature encoder emulation for control systems

The SMTBD1/1M-220/30 sits within this framework as a speed amplifier module intended for AC brushless motors in industrial automation, enabling accurate, repeatable motion with minimal setup time.

Industrial applications

This drive integrates into a wide range of B2B scenarios where dependable speed control, fine resolution, and fast setup are operational requirements:

• Machine tools and CNC auxiliaries: Auxiliary axes, feeds, and spindles requiring stable velocity and encoder emulation
• Packaging and converting: Rollers, synchronized conveyors, and unwinder or winder sections with resolver feedback
• Material handling: Positioning drives on gantries, stacker cranes, and transfer lines
• Textile and paper: Tension-regulated drives with precise low-speed behavior
• Robotics and special machinery: Axes where analog command and tight speed regulation are required

Integration and communication

The SMTBD1/1M-220/30 employs an analog command interface, a serial link for parameterization, and resolver feedback for closed-loop control. Quadrature encoder emulation allows the drive to present A/B channels and a programmable marker pulse to supervisory motion controllers or PLC high-speed counters. This facilitates integration with existing automate programmable logic controllers and command numerique environments without re-engineering feedback chains. The programmable ramps, PI² speed regulator, and extended dynamic range up to 32,768:1 enable precise tuning of motion profiles within a wide operating window.

Supply is provided via a DC bus at 310 VDC nominal, 270 to 340 VDC operating. In practice, this bus is typically fed by a suitable rectifier and filtering stage sized to the motor and duty cycle. Output to the motor is generated by a PWM bridge with IGBT transistors managed by a DSP. Where power or mains specifications must be matched to site standards, verification against the original datasheet and the existing rectifier module is recommended. If nameplate power in kW or HP is required for a conformity check, our technical team can validate the exact pairing with your motor and front-end unit.

Availability and service

This INFRANOR variable speed drive SMTBD1/1M-220/30 is available through Standard Exchange Industry in multiple service options: reconditioned supply, standard exchange, and repair. Each unit is functionally tested on a dedicated bench, with parameters saved in EEPROM and verified. We ship within 24 to 72 hours to more than 120 countries, supporting urgent maintenance needs for production lines. Depending on the selected service, coverage includes a 6 to 24 month warranty. In the event of obsolescence or a critical breakdown, our engineers can cross-reference your existing installation, confirm resolver compatibility, encoder emulation settings up to 8,192 ppr, and ensure the DC bus range aligns with your power stage. Contact SEI for technical validation, a like-for-like replacement, or a repair program aligned with your maintenance window.