AC Servo Drive 400W ASD-B3A-0421-M (CANopen + STO)

The Delta B3 servo system is the long-awaited successor to the Delta B2 servo system. DamenCNC BV only supplies the B3A models common in Europe, which are equipped with STO (Safe Torque Off) as standard. These STO inputs can be used in combination with a safety relay to achieve a SIL2 protection level for the emergency stop.

There are a number of different types of communication: Pulse (step/dir), CAN-OPEN or EtherCAT communication. All types can be found in our webshop, and we keep stock of the Pulse (step/dir) amd EtherCAT. The type we offer here has CANopen communication.

The list of improvements is quite long. We also have a link to YouTube, which explains this in more detail. When using these types of servo drivers in CNC systems, the most important improvement is that the new servo motors can handle an encoder up to 24bit, which is 16,777,216 pulses per revolution. Due to the higher resolution, the bandwidth of the system has been enormously improved from 0.5khz to 3.1khz. In practice, this has the advantage that PID tuning will become easier. Furthermore, the mass inertia ratios can be slightly further off than normal. It is also possible to control older ECMA motors with these new B3 drivers (the cables do need to be modified!).
For use in combination with PLCs and/or HMIs or other automation tasks, the most important improvement is that there is now an internal motion generator, just like before with the A2 drivers. This allows you to program 99 paths. Something like this can be useful for simple tasks where the PLC would then be completely left out.

Component features:

• Communication type: CANopen
• Connects directly to 230V-AC single-phase or 230V-AC three-phase (NOTE not suitable for 3 x 400VAC!)
• Rated output power: 400 W
• STO: standard SIL 2 in combination with a safety relay (IEC/EN 61800-5-2)
• Suitable for 24-bit absolute encoder (16,777,216 pulses per revolution, 46,603 pulses per degree)
• Supports new 6000RPM B3M servo motors (ECMA types were limited to 5000RPM)
• High Response Bandwidth (3.1kHz instead of 0.5khz)
• Increased Load Tolerance (more deviation in mass inertia ratio allowed)
• Minimum cogging torque (50% improvement compared to B2 system)
• High-speed capture function
• Analog feedback PID control
• Vibration suppression functions (notch filters)
• Self-diagnosis and adjustment (advanced PID tuning function)
• B2 (ECMA) motors can also be controlled with a B3 servo driver (backwards compatible)
• DC Bus Sharing (connect the DC bus of several drivers to prevent the need for a regeneratove resistor)
• Smaller drive and motors compared to B2 system (up to 20% smaller driver, and up to 31% smaller servomotor)