SMTBD1/1P-220/04 - Speed amplifier Module - INFRANOR

INFRANOR SMTBD1/1P-220/04 variable speed drive - SMT-BD1 series

The variable speed drive SMTBD1/1P-220/04 is a digital speed amplifier module from the INFRANOR SMT-BD1 series. Designed for servo applications in the 230 V class, it provides precise speed regulation for brushless servomotors in industrial automation. The unit combines a fast speed regulator (P, PI or PI2) with a 0.5 ms sampling period, adjustable gains, anti-windup on the integrator and an anti-resonance filter to stabilize flexible mechanical systems. With a continuous output current of 2.2 A without forced ventilation and a peak current of 4.4 A, it targets compact axes that require accurate velocity control and reliable current limiting. Control is achieved through a ±10 V analog command for speed or current, complemented by digital inputs such as ENABLE and direction, and by encoder feedback compatibility including incremental and Sin-Cos formats. Commissioning and diagnostics are carried out via RS232, with both hardware and software configuration options. This module addresses maintenance needs on existing lines as well as retrofit projects where deterministic speed control, repeatability and short downtime are key criteria.

Technical specifications

• Manufacturer reference: SMTBD1/1P-220/04
• Series: SMT-BD1 digital speed amplifier
• Manufacturer: INFRANOR
• Type: Servo variable speed drive module, speed loop with current limiting
• Supply class: 230 V AC, 50/60 Hz
• Continuous output current: 2.2 A (fanless)
• Maximum output current: 4.4 A
• PWM switching frequency: 10 kHz
• Minimum motor inductance: 1 mH at 230 V class
• Acceleration ramp: 0 to 32 s adjustable
• Speed controller: P, PI or PI2 with 0.5 ms sampling, adjustable gains, integrator anti-windup and anti-resonance filter
• Current limiting: 20 to 100% of Imax for 1 s, plus external 0 to 10 V input, 12-bit resolution
• Command and I/O: ±10 V analog input for speed or current, ENABLE, FC+/FC-, CI, CV0
• Feedback support: Incremental encoder and Sin-Cos
• Configuration: Hardware switches and software via RS232
• Options: Master or slave operation, voltage control option
• Output voltage: According to motor and DC bus in 230 V class, refer to drive and motor pairing

About the SMT-BD1 series

The INFRANOR SMT-BD1 family is intended for velocity control of servo axes where a deterministic and finely tunable speed loop is required. Widely used in legacy and retrofit environments, the series offers short cycle times, accurate analog interfacing and robust protection functions. It is frequently chosen for machine refurbishments when a compact, current-rated module paired with encoder feedback provides the required stability without adding fieldbus complexity.

• Master or slave architectures: One axis can act as master speed reference while others follow, enabling coordinated motion through analog reference sharing and feedback synchronization.
• Voltage control option: For applications that demand voltage-mode behavior, the option allows adaptation to specific control strategies defined by the machine controller.

The model SMTBD1/1P-220/04 fits within the 230 V class with a continuous 2.2 A rating and a 4.4 A peak. It combines fast internal regulation with comprehensive current limiting and filtering features, making it suitable for compact axes where rapid response, repeatable speed and mechanical damping are critical to process quality.

Industrial applications

This servo variable speed drive integrates into a broad range of automation scenarios where precise speed control is mandatory and where a ±10 V command from a motion controller or PLC is available. It addresses both new designs and maintenance replacements that must preserve existing encoder feedback and analog command chains.

• Conveyors and feeders: Stable speed regulation under varying loads, smooth ramps and restart sequences.
• Packaging and rollers: Velocity tracking for film feed and synchronized sections, with anti-resonance to mitigate mechanical oscillations.
• Winders and unwinders: Speed-mode operation with encoder feedback, enabling tension control when supervised by the line controller.
• Machine tool auxiliaries: Drives for auxiliary axes, spindles at controlled speed and CNC feed systems using analog references.
• Assembly and robotics: Pick-and-place units and indexing tables requiring repeatable velocity profiles and fast enable.

Integration and communication

The SMTBD1/1P-220/04 interfaces natively with automation systems through its ±10 V analog input and digital I/O. A PLC or motion controller provides the speed reference and enables the drive, while encoder feedback ensures loop closure and accurate speed estimation. The 0.5 ms internal sampling, combined with adjustable P, PI or PI2 structures, allows fine tuning of dynamic response and overshoot behavior. Anti-windup and notch filtering improve stability in compliant or resonant mechanical chains.

Commissioning uses RS232 for parameter setting, diagnostics and backup. Hardware switches complement software parameters for baseline setup. Current limits can be set between 20 and 100% of Imax, with an external 0 to 10 V limiting input at 12-bit resolution for supervisory control. The PWM frequency of 10 kHz, the minimum motor inductance of 1 mH at 230 V and the adjustable 0 to 32 s ramps help align the drive to the motor and mechanics. Output voltage follows the 230 V class DC bus. Power in kW or HP depends on motor voltage, current and duty cycle, and should be derived from the motor rating combined with the drive’s 2.2 A continuous and 4.4 A peak capability.

Availability and warranty

This INFRANOR variable speed drive SMTBD1/1P-220/04 is available as refurbished supply or via standard exchange, fully bench-tested and delivered with warranty. Standard Exchange Industry ships within 24 to 72 hours to more than 120 countries. Our technical team can assist with cross-referencing within the SMT-BD1 series, verification of encoder compatibility and assessment of current margins versus your motor data. Repair services are also available when retention of existing hardware is required, helping reduce downtime and maintain continuity on installed equipment.