Description
🔹 Product Overview
The INFRANOR SMT-BD1/1A 220/45-T-BS is a legacy digital servo drive / amplifier module from the SMT-BD1 series. The SMT-BD1 family uses PWM servo-amplifier technology for AC sinusoidal brushless motors with resolver feedback and provides current, speed, and position control.
The 220/45-T-BS configuration is associated with a 220 VAC-class supply and a high-current servo-drive rating within the SMT-BD1 family. The model is particularly suitable as a replacement spare for older machine-tool, automation, motion-control, and industrial production equipment where the original Infranor drive architecture remains in service.
⚙️ Key Features
- INFRANOR SMT-BD1 digital servo-drive platform
- Model SMT-BD1/1A 220/45-T-BS
- PWM servo-amplifier technology
- Designed for brushless AC sinusoidal servo motors
- Resolver-feedback architecture
- Current, speed, and position control
- 220 VAC-class power system
- High-current 45 A-class configuration designation
- Suitable for legacy multi-axis motion-control systems
- Useful as a replacement or maintenance spare
📋 Technical Datasheet
| Parameter | Specification |
|---|---|
| Brand | INFRANOR |
| Model | SMT-BD1 |
| Part Number | SMT-BD1/1A 220/45-T-BS |
| Product Series | SMT-BD1 Digital Servo Series |
| Product Name | Servo Drive / Power Module |
| Product Type | PWM Servo Amplifier |
| Motor Type | AC Sinusoidal Brushless Servo Motor |
| Feedback | Resolver |
| Supply Class | 220 VAC |
| Current Class | 45 A-class configuration |
🔧 Servo Drive Function
The SMT-BD1 series is designed to control brushless AC servo motors through PWM power amplification. The drive can regulate motor current and speed while supporting position-control functions through the applicable control architecture.
The resolver feedback provides the drive with motor-position information required for closed-loop servo operation. This makes correct motor/feedback matching especially important when replacing an existing module.
A typical control chain is:
Motion Controller → Servo Command → SMT-BD1 Servo Amplifier → Brushless AC Servo Motor → Resolver Feedback → SMT-BD1
🔌 Power & Control Architecture
The SMT-BD1 family was produced in different supply and current configurations. Infranor documentation identifies 220 VAC and 400 VAC versions, with 220 VAC systems available in single-axis block and multi-axis rack configurations. A 220 VAC rack can accommodate multiple axes together with the applicable power-supply arrangement.
The drive incorporates its own DC/DC conversion for internal control supplies, while the auxiliary DC supply arrangement can maintain position-related control functions when the main power supply is removed.
For the 220/45-T-BS version, verify the complete machine wiring and power architecture before energization. Do not substitute another SMT-BD1 current or voltage variant simply because the physical housing appears similar.
🏭 Typical Applications
The SMT-BD1 platform can be encountered in legacy:
- Machine tools
- CNC equipment
- Industrial automation
- Packaging machinery
- Material-handling systems
- Production machinery
- Robotic motion systems
- Multi-axis positioning equipment
- Precision manufacturing equipment
- Older servo-controlled production lines
It is especially useful where an installed machine depends on the original Infranor servo architecture and replacing the entire motion-control system would require extensive engineering work.
🛠️ Installation & Commissioning
Before installing the SMT-BD1/1A:
- Verify the complete part number 220/45-T-BS.
- Confirm the machine’s incoming supply voltage.
- Verify the motor nameplate and rated current.
- Confirm resolver compatibility and wiring.
- Check motor power-phase connections.
- Inspect connectors and terminal wiring.
- Compare parameter settings with the original drive.
- Verify enable, command, and feedback signals.
- Confirm mechanical brake and safety-circuit operation where applicable.
- Perform a controlled low-speed test before returning the machine to production.
Servo power wiring should be isolated before maintenance. Incorrect motor-phase, resolver, or control wiring can result in uncontrolled motor movement or drive damage.
🔍 Troubleshooting
Drive does not power up
Check incoming AC supply, auxiliary supply, fuses, power wiring, and internal power-stage condition.
Motor does not rotate
Check drive enable status, command signals, motor connections, resolver feedback, and machine safety interlocks.
Motor rotates incorrectly
Verify motor-phase wiring and resolver connections. Incorrect feedback phasing can prevent proper closed-loop operation.
Servo oscillation or unstable movement
Check resolver feedback quality, motor parameters, mechanical load, command scaling, and drive tuning.
Drive trips under acceleration
Inspect motor current, mechanical load, acceleration settings, power supply, and motor cabling. A replacement drive should have the same applicable current class as the original.
Feedback fault
Inspect the resolver cable, connectors, shielding, grounding, and resolver itself before replacing the amplifier.
🧰 Maintenance Recommendations
For legacy SMT-BD1 installations:
- Keep the drive clean and dry.
- Maintain adequate cabinet ventilation.
- Inspect cooling paths and fans regularly.
- Check terminal connections for heat or looseness.
- Inspect motor and resolver cables for insulation damage.
- Record the existing drive parameters before replacement.
- Keep a matched spare available for critical axes.
- Avoid unnecessary changes to established servo tuning.
- Protect stored modules from moisture, dust, vibration, and static discharge.
Because the SMT-BD1 family is a discontinued legacy platform, maintaining compatible replacement inventory can be important for machines that cannot easily be converted to a current servo system.
♻️ Replacement Considerations
The SMT-BD1 family contains numerous voltage, current, control, and feedback variants. Similar-looking units are not automatically interchangeable.
Before replacement, compare:
- SMT-BD1 series
- Complete
/1Aconfiguration - 220 VAC supply designation
- 45 A-class designation
T-BSsuffix- Motor type
- Resolver feedback
- Control interface
- Machine-specific parameter settings
- Rack or single-axis installation arrangement
The distinction between models such as 220/45, 220/30, 220/17, 220/12, and other SMT-BD1 configurations is important. Current and voltage ratings should be matched to the original machine design.
❓ Frequently Asked Questions
What is the INFRANOR SMT-BD1/1A 220/45-T-BS?
It is a digital PWM servo-drive/amplifier module designed for brushless AC servo motors.
What type of motor does it support?
The SMT-BD1 family is designed for AC sinusoidal brushless motors with resolver feedback.
What does 220/45 indicate?
It identifies a 220 VAC-class drive configuration with a 45 A-class current designation. The complete electrical rating should be confirmed from the drive’s nameplate and machine documentation.
Is it a PLC or motion controller?
No. It is a servo amplifier/drive. The motion command normally comes from an external machine or motion controller.
Can another SMT-BD1 model replace the 220/45-T-BS?
Not automatically. Supply voltage, current rating, motor compatibility, feedback, control interface, and machine parameters must all be checked.
Is the SMT-BD1 series still a current product family?
The SMTB/SMT-BD1 platform is a legacy/discontinued product family. Infranor identifies these drives as discontinued and directs users toward repair or replacement solutions.
Is resolver wiring important during replacement?
Yes. Resolver feedback is part of the closed-loop servo system, so incorrect feedback wiring can cause drive faults or incorrect motor behavior.
🔄 10 Related INFRANOR Models / Parts
- INFRANOR SMT-BD1/1A 220/04-T-BS — Digital Servo Drive
- INFRANOR SMT-BD1/1A 220/08W-T-BS — Servo Drive Amplifier
- INFRANOR SMT-BD1/1A 220/12-DT-BS — Digital Servo Drive
- INFRANOR SMT-BD1/1A 220/17-T-BS — Servo Drive Amplifier
- INFRANOR SMT-BD1/1A 220/30-T-BS — Servo Drive
- INFRANOR SMT-BD1-220/30 — Digital Brushless Servo Controller
- INFRANOR SMT-BD1-220/45 — Servo Drive Amplifier
- INFRANOR SMT-BD1/1A-400/15-T-BS — Servo Drive
- INFRANOR SMTBM-B20A — Servo Controller
- INFRANOR SMTBSIC-220/30 — Servo Control System
✅ Product Summary
The INFRANOR SMT-BD1/1A 220/45-T-BS Servo Drive Power Module is a legacy high-current servo amplifier for brushless AC motion-control applications. Its resolver-based closed-loop architecture and SMT-BD1 platform make it particularly valuable as a replacement spare for existing industrial machinery.
For replacement projects, verify the complete 220/45-T-BS configuration, motor current, resolver feedback, control wiring, and machine parameters before installation.
