SANMOTIONServo Systems

How high temperature can the stepping motor be used at?
The permissible temperature depends on the models and it described in the drawings. If the insulation of the motor is Class B, the permissible temperature for the coil is 130°C. The motor can be used if the temperature at motor surface is around 100°C or less. Since heat affects the ball bearing life, try to use the motor at lowest temperature possible.
Is there any way to reduce heat generation of stepping motor?
1) Adjust operation current if there is enough torque margin.
2) Adjust dwell time between motions.
3) Install the motor on a plate with good heat conductivity.
4) Use cooling fan.
Is it all right the motor shaft get machined?
When the shaft is machined, some impact may be felt by the ball bearings within the motor. When using servo motors, encoder might be damaged as well.
Is there any way to suppress vibration of stepping motor?
1) Use a damper.
2) Adjust the operating current if there is enough torque margin.
3) Use microstep drive.
4) Use gearhead.
What is the resolution of Sanyo Denki’s single turn absolute encoder?
We have different resolutions for our single turn absolute encoder we carry a 17-bit, 20-bit single turn absolute encoder.
What is the difference between instantaneous torque and continuous torque?
Instantaneous torque is the motor’s maximum torque it can output for a short period of time, Continuous torque is the maximum torque the motor can run without occurring overload alarm.
What is the difference between incremental and absolute encoder?
An absolute encoder has a unique code for each shaft position which represents the absolute position of the encoder, while and incremental encoder generates an output signal each time the shaft rotates a certain angle and the number of generated pulses.
What is difference between power circuit and control circuit?
Main power circuit is mainly generating bus voltage provided to the motor coil. Control circuit power is mainly for operating servo control and protection functions. In case of an alarm or setting parameters, we recommend not to connect the main power circuit for ensuring safety.
What kinds of motion controllers does Sanyo Denki offer?
Our motion controller has three functions of motion control. Robot control, Sequence control, and motion control. That can be used to work with our EtherCAT drives.
What HMIs does Sanyo Denki offer?
The HMI we have that is compatible with our motion controller is Programmable Touch Panel.
Which IP rating is applied for motor?
Our servo motors come standard IP65 and have an option to be IP67. IP67 means the unit can be protected against solid objects like dust and sand, and it has been tested to work for at least 30 minutes while under 15cm to 1m or water.
Which standard is certificated for servo motor and amplifier?
Motor: CE and UL certified.
Amplifier: CE, UL, TUV, KC. KC is certificated for 3E model only
Is there any ambient temperature limitation to use servo motor?
Most of our servo motor is 0-40˚C. (Depending on models) .
Which case is a regenerative resistor required?
In case of vertical motion, quick deceleration, spinning large inertia… etc.
Which case is a brake equipped motor required?
In case of vertical motion. Our brake is for holding motor shaft after motor completely stops, not for braking during operation like car brake.
What is the difference between holding torque and running torque of stepping motor?
Holding torque is a measurement of how much rotating force is required to force a stationary stepper motor shaft out of position. Running torque is usually lower than holding torque and runs off as speed increases.
What is the difference between 2-phase unipolar stepping motor and bipolar stepping motor?
Unipolar stepper motor operates with on winding with a center tap per phase. Each section of the winding is switched on for each direction of the magnetic field. With bipolar stepper motors, there is only a single winding per phase.
What is the maximum current/voltage for 2-phase bipolar stepping driver?
Voltage range for the 2-phase bipolar stepping driver is 24-36V DC, maximum driver input current is 3A. That is used for both motor operating current and internal circuit. Maximum value of motor operating current is 2A.
What is the maximum input frequency of 2-phase bipolar stepping driver?
Maximum input frequency for 2-phase bipolar stepping driver is 150 kpps or kpuse/s.
What is micro-stepping?
Micro-stepping is a way of moving the stator flux of a stepper more smoothly than in full-or-half step drives modes. This results in less vibration and makes noiseless stepping possible. It also makes smaller step angles and better positioning possible.
What is self-start frequency?
Self-start frequency is the frequency where the stepper motor can begin operating normally without stalling. The motor will not operate normally if it is started using frequencies that exceed these values. For this reason, it is necessary to start the stepping motor using frequencies that are lower than the recommended value.
What is low vibration mode on 2-phase bipolar stepping drive?
The low vibration mode on the 2-phase bipolar stepping driver suppresses vibrations can be suppressed, can be suppressed without changing pulse out frequency of pulse generator.

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