The Bautz S M D 101/120 (Part Number FX0000220) is a high-precision, analog-controlled servodrive designed for the excitation and speed regulation of permanent magnet DC or brushless AC servomotors in high-dynamic industrial applications.
Product Parameters (Datasheet)
- Model Number: S M D 101/120
- Part Number: FX0000220
- Series: SMD (Servo Module Drive)
- Designation: G1567 F 00
- Nominal DC Bus Voltage: 120V DC
- Peak Output Current: 10A (Typical for 101 series)
- Continuous Output Current: 5A (Typical for 101 series)
- Control Interface: Analog ±10V Velocity/Torque command
- Feedback Support: Tacho-generator or Resolver (dependent on plug-in module)
- Mounting: Rack-mount or sub-plate integrated module
- Protection: Over-current, over-voltage, and short-circuit protection

Country of Origin
This servodrive was engineered and manufactured in Germany by Bautz (later integrated into the Kollmorgen / Danaher Motion group).
Application Fields
The Bautz SMD series is a legacy standard in European machinery, particularly in:
- Machine Tools: Precise axis control for small milling and grinding machines.
- Textile Machinery: High-speed yarn tensioning and positioning drives.
- Printing Presses: Synchronized roller control for color alignment.
- Robotics: Multi-axis control for pick-and-place industrial arms.
- Packaging: Indexing and conveyor speed regulation.
Product Usage Instructions
- Chassis Integration: Ensure the SMD 101/120 is firmly seated in its rack or mounting plate to maintain solid electrical contact with the backplane terminals.
- Heat Dissipation: The module relies on convection or forced-air cooling. Maintain a minimum of 20mm spacing between adjacent drive modules in the rack.
- Potentiometer Adjustment: Fine-tune the “Offset,” “Gain,” and “Tacho” settings using the front-panel trim-pots to match the drive’s response to the specific motor characteristics.
- Wiring: Use shielded cables for the analog command signal and feedback wires to prevent electromagnetic interference (EMI) from causing jitter in the motor.
- Safety: Always discharge the DC bus capacitors (wait at least 5 minutes after power-down) before handling the module or checking cable connections.
Product Technical Description
The S M D 101/120 is a 4-quadrant PWM (Pulse Width Modulation) amplifier. Technically, it is designed for four-quadrant operation, meaning it can provide both driving torque and braking torque in both directions of rotation. The G1567 F 00 designation refers to the specific internal hardware revision and the factory-set current limits. It is known for its extremely high bandwidth and linear response, making it ideal for applications requiring rapid start-stop cycles without overshooting the target position.
Q&A (Common Questions)
Q: My motor is vibrating at a standstill. Is the drive faulty? A: Not necessarily. This is often caused by an incorrect “Gain” or “Tacho” adjustment. Try backing off the Gain potentiometer slightly to stabilize the control loop.
Q: Can this drive run a standard 3-phase induction motor? A: No, the SMD series is specifically designed for permanent magnet servomotors (DC or Brushless) and requires specialized feedback to function.
Q: What does the “120” in the model name signify? A: It indicates the maximum rated DC link voltage (120V DC) that the drive can safely handle.
Q: Is there a digital version of this drive? A: The SMD series is primarily analog. For digital control (EtherCAT/CANopen), newer series from Kollmorgen (like the AKD series) are the modern successors.
Similar Model Recommendations
- Bautz S M D 102/120 (Higher current variant)
- Bautz S M D 101/60 (60V DC bus version)
- Bautz W M D 60 (Related PWM amplifier series)
- Kollmorgen Seidel 60WKS (Alternative European servodrive)
- Bautz E M D series (Compact integrated motor-drive units)
For technical assistance or inventory availability for the Bautz S M D 101/120 and other Bautz/Kollmorgen servo components, please contact our support team
