NS35
The non-switching driver NS35 is ideal for disk inspection equipment where noise is averse when combined with an air spindle.

- Noiseless control
- The control section is made up of only hardware logic circuits and analog circuits, rather than a conventional microcontroller that uses a high-speed clock, resulting in less noise.
- Non-switching drive
- The power element that drives the motor is not an ON/OFF switching operation, but a non-switching (linear) operation, so it generates less noise.
- High rotational accuracy speed
- Highly accurate rotational speed can be obtained by combining sine wave drive, which reduces torque ripple, and PLL control using encoder signals.
Outside Dimensions

Main Specifications
| Tools | Specifications | ||||
|---|---|---|---|---|---|
| Power supply | DC+5V, DC±12V, DC±24V | ||||
| Control Details | Control method | PLL speed control by encoder signal | |||
| Drive System | Sine wave non-switching (linear) drive | ||||
| Maximum drive current | 8A peak | ||||
| Rated current | 6A peak | ||||
| Rotation speed command | Clock input (line driver method) Max.5MHz | ||||
| Maximum rotation speed | 20,000r/min | ||||
| Uneven Rotation | 0.001% or less *1 | ||||
| Control Input | Rotation command, direction command, reset, spindle air pressure error | ||||
| Control Output | Encoder signal A, B, Z phase, PLL lock Motor stop, alarm output |
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| Abnormal Braking | Dynamic braking with external regenerative resistor | ||||
| Anomaly Detection | LED display and alarm output inside the driver | ||||
| Applicable motor, encoder, combination | Encoder pulse number | Number of motor poles | |||
| 4P | 6P | 8P | |||
| 512PR | ○ | ○ | ○ | ||
| 720PR | - | ○ | ○ | ||
| 1,024PR | ○ | ○ | ○ | ||
| 2,000PR | - | ○ | ○ | ||
| 2,048PR | - | ○ | ○ | ||
| 4,096PR | - | ○ | ○ | ||
| Operating conditions | Ambient temperature | 25℃±5℃ (driver ambient temperature) | |||
| Storage Temperature | -20℃~85℃ | ||||
| operating humidity | 35% to 85% (no condensation) | ||||
| Installation location | Inside the control panel (corrosive gas, grinding oil, metal powder, etc.) (The atmosphere must not be harmful to electronic equipment) |
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| Cooling Method | Forced air cooling *2 | ||||
| External dimensions | 130×260×190mm (excluding connector part) | ||||
| Weight | Approximately 5.2kg | ||||
- *1Depending on the load, it may be 0.001% abnormal.
- *2 The ambient temperature around the driver will be quite high when it is sealed. Please install it in a place with good air flow as much as possible.
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