Power supply voltage 18 [Vac] ÷ 100 [Vac]
Output current 0 [A/ph rms] ÷ 8.0 [A/ph rms] 0 [A/ph peak] ÷ 11.0 [A/ph peak]
Interface control mode Serial RS485 Modbus RTU
Power stage H bipolar chopper bridge at 40 KHz.
Digital inputs 4 digital optoisolated inputs
Digital outputs 2 digital optoisolated outputs (100 mA)
Open or Close loop Closed loop
Step resolution StepLess Technology
Safety protections Over / under-voltage, over current, over temperature, short-circuit phase / phase and phase / phase ground
Operative temperature 0 [°C] ~ +50 [°C]
Storage temperature 0 [°C] ~ +55 [°C]
Humidity 0 [%] ~ 90 [%]
Protection class IP65
Dimensions H x L x W 135,0 [mm] x 86,0 [mm] x 138,5 [mm]
Weight 3,20 [Kg.]
Software settings and connections Programmable with ATOMIC IDE
Bipolar holding torque 450 [Ncm] min.
Rotor inertia 1400 [g.cm²]
Encoder 400 ppr incremental

Principal features

● Multiple Control Modes
● With Advanced Safety Features: √ integrated diagnostics and monitoring of faults √ Watch dog functionality integrated √ separate power supply for logic and power √ error buffer and field management
● Closed loop of torque, speed and position
● Low motor vibrations
● Low mechanical noise
● Low heat generation
● Compact size
● IP65 Protection
● No resonanca
● High reliability
● AC Power supply
● Wide range of powers


• Control mode
• Velocity control mode
• Different positioning Control Modes (homing, relative, absolute, target)
• Electric Gear with programmable gear ratio to track external master reference (from fieldbus or incremental encoder) of motor Speed and Position
• High speed I/O triggered motor start & stop to event syncronizing for fast response demanding application: labeling, nick_finder, on fly cut., etc...
• Multi Axis movements syncronization capability
• CAM mode with profiles programming
•On fly change among any Motion Module Control Modes
•On fly Electric Gear Enable/Disable capability
• Control of the drives by commands from the Master Controller. Suitable for Multi-Axis Systems (up to 127 drives). Integrates all the features of the Power Motion Module that ensures perfect synchronization between the axes and reduces the workload of the Master Controller
• Pogramming and debugging through Modbus interface. For this purpose, we provide the SM2A_ATMU-00 soft-start kit, including a serial-to-USB adapter and cables. The kit is equipped with a CD-Rom with the Atomic IDE software in the demo version
The SM line is a series of full digital drives with an integrated 50-poles motor, with local logic, programmable and equipped with PLC functionality. Suitable for use in 'stand alone' mode and connected to HMI touch screen for application parameters, these units have a serial interface (Modbus-RTU) for programming and debugging the application thanks to the Atomic IDE software environment which allows the user to access all the functions and resources of the device and to manage and synchronize the Movement Module and the resources of other drives with each process event. They also have ready-to-use and easily customizable modules such as: label management, cam management, cable processing, plate orientation, adjustment of printing registers and others.
Stepper drives > Two phases > Programmables > Smart Motor > SM2A660PN243B40c0499
Download area for SM2A660PN243B40c0499

Modbus is a communication protocol among the most widely used standards in the world of industrial devices. All our devices equipped with a serial interface (RS232 or RS485) implement and support the Modbus RTU protocol.

Ever Elettronica programmable drives represent something new: they integrate a real PLC on the drive to be able to create complex automations with a single device.

The innovative f4d2 technology allows the motor’s excitation at high efficiency chopper thanks to the calculations speed for the current regulation performed by the drive's microprocessor and thanks to a proprietary patented algorithm.

Nowadays modern machines have to be flexible and adjustable to the production needs, quickly and easily. The use of the electric cam allows the reproduction of automatisms that, in the past, could only be obtained by a precise -but not very flexible- mechanical cams.


PLC functionalities integrated

Connection /Control

Drive's programming and debugging through Atomic IDE

Stepper drives > Two phases > Programmables > Smart Motor > SM2A660PN243B40c0499

Mechanical drawing

Dimensions in mm

Stepper drives > Two phases > Programmables > Smart Motor > SM2A660PN243B40c0499

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