28-MIntegrated servo motor

STM28 Integrated servo motor, closed-loop control system and integrated development concept, integrated stepper motor, encoder, driver in one, using FOC magnetic field oriented control, small size

·Permanent magnet synchronous motor, encoder, servo driver integrated

·Bus control, support CAN/485 communication

·Support multiple control modes

Product description

· STM28-M Integrated servo motor are high-performance low-power stepping servo products independently developed by NiMotion. With its excellent closed-loop control system and integrated development concept, it integrates stepper motors, encoders, and drivers. It adopts FOC field-oriented control technology and supports CAN bus control. It has the characteristics of small size and simple wiring, which can be used for servo motors. The application of performance provides a cost-effective solution, and the price is only the level of a stepper motor.

Structure diagram

· Closed-loop commutation to achieve high dynamic performance Compared with traditional open-loop control motors, it can achieve faster acceleration, lower operating noise and less resonance, which significantly improves the performance of stepper motors. The integrated electronics operate the stepper motor as a two-phase brushless DC motor and execute position loop, speed loop, current control and additional algorithms. With an absolute single-turn encoder, closed-loop commutation ensures that the maximum torque can be achieved at any speed.

·The use of field-oriented vector control makes the motor run quietly and smoothly, realizes precise position control, speed control, and torque control, supports 7-segment S-curve planning, integrates high-speed optocoupler digital input, and supports pulse input control.

·Integrated components can reduce space, cost and machine complexity. In a decentralized structure, wiring and assembly time can be reduced, which can greatly save machine manufacturers' costs. The decentralized drive system that integrates motors, control systems, and power electronics can also free up more space in order to effectively reduce heat generation in the chassis. Due to the use of fewer components and a smaller chassis, the complexity of the machine is also reduced.

·High-resolution encoder can improve system efficiency. With its 10000 pulse/r encoder, it accurately controls the magnetic flux generated according to the actual load to ensure accurate positioning and maximum machine efficiency.

Special function

·Resonance suppression: effective suppression of vibration frequency range ≥300Hz

·Support parameter self-tuning, feedforward adjustment, gain switching function

·Low frequency suppression: effective suppression of vibration frequency range ≤100Hz

·Multi-stage position function, multi-stage speed function

·Motor parameter recognition function

·Internal implementation of voltage suppression algorithm

Input voltage

·10VDC~36VDC

Current loop response

·20 KHz

Encoder

·Integrated 18-bit resolution absolute value encoder

Drive way

·Adopt FOC field oriented control technology and SVPWM

NiMotion Mode

·Support position mode, velocity mode, torque mode

CiA402 Mode

·Support PP, VM, PV, PT, HM, IP, CSP, CSV, CST standard mode

I/O configurable function

·Multiple functions can be configured, step enable, alarm reset, pause, positive limit switch, limit switch, origin switch, clear fault, pulse input, duty cycle speed control, incremental AB pulse input, alarm output, Target reach output, run stop output, etc.

Digital input and output

·Can be configured with 3 digital inputs and 2 digital outputs

·Digital input supports 5V and 24V two-level input, both of which use high-speed bidirectional optocouplers

·Digital output: support MOS open-drain output, NPN, current: 1A@30V

Soft limit

·The maximum and minimum position of the software

Parameters can be set

·Acceleration, deceleration, jerk, acceleration and deceleration, speed feed forward, position feed forward, running current, temperature alarm threshold, open loop closed loop, electronic gear ratio, three loop PI parameters, following error, etc.

Troubleshooting

·Overvoltage\undervoltage\overtemperature\hardware failure\blocked rotor\overload\overspeed\initialization failure\storage failure\overrun detection\origin return timeout\tracking failure\target position overflow failure\curve planning parameter too small failure, etc.