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 RS232/RS485 Modbus RTU
Power stage 40 KHz H bridge bipolar chopper
Digital inputs 4 optoisolated digital inputs
Digital outputs 2 optoisolated digital 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 encoder

Principal features

● Multiple Control Modes
● With Advanced Safety Features: √ tested for direct unit installations √ integrated watch dog features √ integrated diagnostics and monitoring of faults √ error buffer and field management
● Closed loop of speed, torque and current.
● Low motor vibrations
● Low mechanical noise
● Low heat generation
● Compact size
● IP65 protection
● No resonance
● High reliability
● AC power supplies
● Wide range of power.


• Control mode
• Progrmmable with PLC functionalities and 'Stand alone 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 ...
• CAM mode with programmable profiles
• Multi Axis movements syncronization capability
•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
• Programming and debugging of the drive through serial interface. For this purpose, the SM2A_ATMU-00 soft-start kit is available, including converters and cables from serial interface to to USB. The kit is accompanied by a CD-Rom with Atomic IDE software in the demo version.
The SM line is a full digital local logic drives series, programmable and equipped with PLC functionality with a 50-pole motor integrated and an encoder to close the current, speed and position loop. These servomotors are suitable for use in 'stand alone' mode and can be connected to HMI touch screen for application parameters. They also have a serial interface (Modbus-RTU) for programming and debugging the application thanks to the Atomic IDE software environment that allows the user to access all the functions and resources of the device and to manage and synchronize the Module Movement and resources of other drives with each process event. In addition there are several ready-to-use and easily customizable modules for servomotor management in applications such as: labeling, cam management, cable processing, plate orientation, adjusting printing registers and others.
Stepper drives > Two phases > Programmables > Smart Motor > SM2A660PN343B40c0499

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.


Integrated PLC functionalities.


Programmazione e debug dell'azionamento tramite Atomic IDE

Stepper drives > Two phases > Programmables > Smart Motor > SM2A660PN343B40c0499

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Dimensioni in mm

Stepper drives > Two phases > Programmables > Smart Motor > SM2A660PN343B40c0499

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Programming environment for SM2A servo-drives.

Programming environment for SM2A servo-drives.

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