SMTBD1/1A-220/60 - Speed amplifier Module - INFRANOR

INFRANOR SMTBD1/1A-220/60 Variable Speed Drive, SMT-BD1 series

The reference SMTBD1/1A-220/60 is a digital AC servo variable speed drive from the INFRANOR SMT-BD1 series. It is engineered for precise regulation of speed and torque on AC servo motors where repeatability, responsiveness, and stable dynamics are mandatory. Maintenance teams, OEMs, and system integrators use this drive to restore or upgrade motion axes on equipment that must sustain tight speed accuracy and fast transients, while remaining robust against electrical and mechanical disturbances on the shop floor. Operating from a 220 VAC supply with an internal bus around 310 VDC, the unit provides a motor output near 200 Vrms and a closed-loop control structure combining a PI2 speed regulator, autotuning, and encoder feedback. Typical capabilities of the SMT-BD1 platform include a wide adjustable speed range, configurable acceleration and deceleration ramps, logic I/O for permissives and limits, ±10 V analog command for speed or torque reference, and analog monitor outputs for commissioning and diagnostics. The module is designed as a single-axis rack unit, with dimensions in the series commonly found around 245 × 380 × 159 mm, facilitating integration into retrofits or cabinet expansions where space and cooling are constrained.

Technical characteristics

• Manufacturer reference: SMTBD1/1A-220/60
• Series: SMT-BD1 digital AC servo drive
• Manufacturer: INFRANOR
• Type: Single-axis servo variable speed drive module
• Input supply voltage: 220 VAC, 50/60 Hz, internal DC bus around 310 VDC
• Motor output voltage: approximately 200 Vrms, PWM switching frequency up to 10 kHz
• Output current capability: variant rated at 60 Arms, SMT-BD1 series spanning approximately 4 to 100 Arms at 220 V
• Control modes: speed, torque, and position modes, PI2 speed controller with autotuning
• Speed range: adjustable, typically 100 to 14,000 rpm, loop bandwidth around 50 to 100 Hz
• Feedback: incremental encoder, resolution up to 8192 ppr
• Command interfaces: ±10 V analog inputs for speed or current reference, analog monitor outputs, logic I/O for enable, limits, and fault reset
• Mechanical format: single-axis rack unit, SMT-BD1 series dimensions commonly around 245 × 380 × 159 mm

SMT-BD1 series overview

The SMT-BD1 series from INFRANOR targets motion systems that require deterministic speed and torque regulation with encoder-based feedback. Positioned as a servo-oriented variable speed platform, it brings a consistent control structure across current ratings, allowing maintenance teams to scale an axis without changing commissioning practices. A digital signal processor executes the real-time algorithms, while PI2 speed control with autotuning helps stabilize the loop and reduce commissioning time. The series is widely found in installed bases where productivity relies on synchronized sections such as multi-conveyor lines, infeed and outfeed modules, and spindle or auxiliary axes on machinery. Its architecture supports closed-loop operation, analog command interoperability with existing PLC and CNC systems, and monitoring outputs used during setup and preventive maintenance. By combining stable low-speed behavior with adequate high-speed capability, SMT-BD1 drives contribute to consistent product quality, reduced scrap, and predictable cycle times in repetitive processes.

• Servo-focused control: encoder feedback and PI2 speed loop favor precise regulation for sensitive processes.
• Unified commissioning: similar parameter sets across the range simplify spare management and training.

The SMTBD1/1A-220/60 variant fits facilities operating on 220 VAC networks and needing a current rating around 60 Arms, typically associated with medium-power servo axes. Its compatibility with ±10 V references streamlines replacement in legacy architectures where analog speed or torque commands are standard.

Industrial applications

This INFRANOR variable speed drive integrates into numerous industrial contexts where servo precision and reliability are required:

• Machine tool and CNC auxiliaries: servo axes for feeds, tool changers, or auxiliary positioning stages
• Packaging and labeling: synchronized conveyors, rotary axes, web tension control, accurate start-stop cycles
• Materials handling: conveyor sections, indexers, pick-and-place axes with repeatable acceleration profiles
• Printing and paper: regulation of driven rollers, section-to-section synchronization with encoder following
• General automation and robotics: torque-regulated actuators, coordinated multi-axis motion where deterministic speed is required

Integration and communication

The SMTBD1/1A-220/60 interfaces cleanly with existing PLC and CNC architectures through ±10 V analog command inputs and logic I/O. The enable, limit, and fault reset signals support standard safety and permissive chains. Encoder feedback up to 8192 ppr ensures a fine speed measurement for closed-loop regulation. The 10 kHz PWM and the PI2 speed loop deliver stable dynamics within the typical 50 to 100 Hz bandwidth, which is suitable for a broad set of motion profiles without inducing mechanical resonance. Monitoring outputs provide real-time access to key variables such as speed or current, simplifying commissioning and troubleshooting with an oscilloscope or a data acquisition tool. Within multi-axis systems, the SMT-BD1 architecture supports synchronized behavior by sharing master references and coordinating ramps, providing consistent start, stop, and tracking patterns across stations.

Parameterization follows the series conventions, with clear access to fundamental motor and loop settings. Autotuning routines contribute to faster commissioning and repeatable results after maintenance or motor replacement. For facilities with an installed base of SMT-BD1 modules, spare and replacement strategies are streamlined by the common hardware and parameter philosophy across current ratings.

Availability and warranty

The INFRANOR SMTBD1/1A-220/60 variable speed drive is available from Standard Exchange Industry in several service modes: supply of reconditioned units, standard exchange, or repair of your existing hardware. Each unit is functionally tested on a dedicated bench and delivered with a warranty. SEI supports rapid dispatch in 24 to 72 hours to over 120 countries. If your production line is stopped or you need to plan a preventive replacement, our technical team can help you confirm compatibility with your motor and control system, align current ratings, and validate I/O and encoder interfaces. This approach reduces downtime risk while preserving the established control strategy in your PLC or CNC program.