Reliable Design and Structure

A hollow rotor and a ball screw nut are joined. Since no connecting parts are necessary, there is less backlash than when coupling rigidity, etc. combines other parts. Therefore, highly accurate positioning can be achieved.

High Positioning Accuracy

The ball screw nut is linked with the hollow rotor. Through the coupling rigidity and other aspects of parts combination, the impact of backlash has been minimized achieving high-precision positioning.

Ground Ball Screw

Ideal for applications where high positioning accuracy and low vibration are required, such as optical devices and semiconductor systems that use fine-feed pitches. The DRS ground ball screw type achieves high reliability by maximizing the performance of a 5-phase stepper motor.

Rolled Ball Screw

Ideal for general positioning applications where reliability and ease of use are given priority. It combines the superior thrust and resolution of the ground ball screw type with greater ease of use.

Compact Body Houses Entire Linear Motion Mechanism

Since customers do not need to provide parts, the time needed for installing, designing, and selecting parts can be reduced. The number of man-hours required for assembly and adjusting the installation accuracy can be reduced, contributing to higher productivity.

Installation Time Reduced

Space Saving and Less Wiring with the Absolute Sensor

In addition to the compact and lightweight body, the motors with absolute sensors do not require a home sensor. This saves space and wiring, and lets you avoid routine maintenance or trouble caused by using a home sensor.

Application Examples

Efficient Push-Motion Operation

Flexible Pushing Force and Timing

The AlphaStep DRS2 Series can easily perform a push-motion operation after a positioning operation. Also, the pushing force and timing are adjustable.

• You can set the pushing force and push timing to an operation data No., and then select the data No. to change the settings.
• There are different ways to change the pressing phases, such as dropping the force so that the position does not shift, slowly increasing
  the force, or rapidly increasing the force.

Pressing at Low Speed

The motor can approach the load at high speed. The motor decelerates just before hitting the surface at low speed.

• Since the pressing impact is minimal, a mechanism for shock absorption is not required.
• The motor can approach at high speed just before reaching the surface, thus reducing the takt time.

Push-Motion Operation with Pulse Input Type

When T-MODE input is set, push-motion operation is possible, without the overload alarm for the pulse input type being generated.
This is useful for push-motion operation while using pulse signal control.

Newly Developed Absolute Sensor

Oriental Motor has developed a compact, low-cost, battery-free mechanical type absolute sensor (patented). This can help improve productivity and reduce costs.

Mechanical-Type Sensor

A mechanical sensor composed of multiple gears is employed. Positioning information is detected by recognizing the angle of the individual gears.

Multi-turn absolute sensor

Absolute position detection is possible with ±900 rotations (1800 rotations) of the motor shaft from the reference home position.

Home Setting Method

The home position can be easily set by pressing a switch on the driver's surface, which is saved by the Absolute Sensor. In addition, home setting is possible with the data setting software (MEXE02) or by using an external input signal.

Battery-free

No battery is required thanks to a mechanical-type sensor. Positioning information is managed mechanically by the absolute sensor.

No External Sensors Required

With the use of the absolute system, external sensors such as the home sensor and the limit sensor are not needed.

Hybrid Control System

The hybrid control system constantly monitors the motors position allowing for the benefits of performance from "open loop" control while providing the assurance of "closed loop " performance.

1. I/O

Because the positioning unit (pulse generator) function is built in to the driver, you can build an operation system using I/O by directly connecting to a switch box or PLC. Because a positioning unit is not necessary on the PLC side, space is saved and the system is simplified.

Using a Switch Box - Because operating data is set in the driver, the actuator can be started and stopped simply by connecting a switch you have on hand. Control can be performed easily without using PLC.

Using PLC - When using PLC you can build an operation system by connecting directly to an I/O unit. Because a positioning unit is not necessary on the PLC side, space is saved and the system is simplified.

Using PLC and a Touch Screen - Normally, the actuator is started and stopped with I/O. Changing the operating data settings and displaying the monitors and alarms is performed with the touch screen using Modbus (RTU) communication. When there is a lot of setup work, changes can be easily performed on the touch screen, and the burden of creating ladders is reduced.

2. Modbus (RTU) / RS-485

Operating data and parameters can be set and operation commands can be input using RS-485 communication. Up to 31 drivers can be connected to each serial communication unit. Also, there is a function that enables the simultaneous start of multiple axes. The protocol supports Modbus (RTU), enabling connection with devices such as touch-screen panel computers and PCs.

3. Industrial Network

Using a network converter (sold separately) enables support with EtherCAT communication, CC-Link communication, and MECHATROLINK communication. Operating data and parameters can be set and operating commands can be input using various communication methods.

Compact linear actuators with built-in guide reduces the need for an external anti-spin mechanism further reducing parts required for designing your applications.

High Transportable Mass and High Speed are Achieved

Maximum Transportable Mass

• Horizontal direction: 10 kg [Lead 2 mm], 5 kg [Lead 8 mm]
• Vertical direction: 10 kg [Lead 2 mm], 5 kg [Lead 8 mm]

Maximum Speed

• 50 mm/sec [Lead 2 mm], 200 mm/s [Lead 8 mm]

The standard compact linear actuators, no guide type, require the use of an Anti-spin Mechanism

The load position can be held when the power is cut off. Since the work will not fall in case of power failure or disconnection, you can safely use equipment in which the work moves vertically.