ATOMI specifications overview table

Function	Description
Servo/stepping motor drive	Closed loop control of various types of servo motors by sinusoidal field oriented control with dead-time distortion correction and high dynamic range torque control. Synchronous AC & BLDC motors Sinusoidal and trapezoidal commutated SPM (Surface Permanent Magnet) and IPM (Internal Permanent Magnet) types Brush DC motors Linear motors Iron core Ironless (with external inductive filter) Stepping motor, 2 phase (4,6 or 8 wires)
Control modes	Torque control Velocity/speed control Position control
Setpoint types	See setpoint signal / reference inputs list Direct set-point tracking via pulse and direction, PWM, Analog, Quadrature, SimpleMotion V2 Pulse burst positioning Buffered synchronous motion commands via SimpleMotion V2
Closed loop	Cascaded control loops (PIV): Torque / current control, update frequency 20.0 kHz Velocity control, update frequency 2.5 kHz Position control, update frequency 2.5 kHz
Feed-forwards	Feed-forwards working in velocity & position control modes: Acceleration (inertia canceling) feed-forward Velocity (friction canceling) feed-forward
Homing	Integrated homing function for position control mode: Sensorless hard-stop homing Home switch search Index pulse search Soft position limits (eliminate limit switches)
Feedback devices	See feedback devices list
Safety	Safe torque off with 3-way redundancy Charge pump enable input Stopping motor on errors Tracking error (velocity & position) Over speed error Limit switch DC motor runaway prevention on feedback loss Communication error detection
Protections	Over current Short circuit (phase-to-phase) I2t motor thermal protection Over & under voltage Over temperature
Power supply	Externally supplied IONI, IONI Pro 5 – 52 VDC IONI Pro HC 5 - 55 VDC Additionally an external 5 VDC logic supply required. Note: if drive is used with IONICUBE motherboards, then 24 VDC logic supply voltage is needed instead as IONICUBE has on-board 5V regulator.
Motor output current1	AC/BLDC/Stepping/Linear motors (current specified as peak of sine): IONI 0-15 A IONI Pro 0-18 A IONI Pro HC 0-25 A Brush DC motors: IONI 0-19.5 A IONI Pro 0-23.4 A IONI Pro HC 0-30 A
Commissioning	Granity setup software Online user guide
Compliance	CE (LVD & EMC): EN 61800-5-1:2007, IEC 61000-6-1:2005 and IEC 61000-6-3:2006. SIL2: IEC 61800-5-2:2016-04 Notes: The device is Low Voltage Directive (LVD) compliant up to 42 VDC power supply, and above that level the supply voltage is considered hazardous, so external measures (such as or isolation or protective impedance) are necessary to prevent human contact to any circuit connected to the device. In order to meet EMC standard requirements, a proper installation and wiring is necessary. Refer to user guide for proper installation.
Reliability	MTBF: 2.99 million hours Failure rate (all delivered units, actual statistic from 2015-2017): 0.36%

¹) Currents achievable continuously only with with sufficient coolant air flow. Without forced cooling, typically 30-45% of the maximum range can be driven continuously. Despite of this, maximum current is available for short periods of time even without cooling. Current is automatically throttled on temperature rise to protect the drive.

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