4 System Design
4 - 10
G5-series Linear Motors/Servo Drives With Built-in EtherCAT Communications
Before operating the Linear Motor, it is necessary to assemble parts such as the linear guides and the
external encoder into the Linear Slider, in addition to the Motor Coil Unit and the Magnet Track.
An example of the Linear Slider is shown below.
When designing a Linear Slider, prepare proper parts for the system and implement sufficient
measures to ensure safety operation.
z
Mechanical Tolerance
Design and install a Linear Motor system that meets the requirements for each model in 2-4-2
Linear Motor Dimensions on page 2-20.
For example, the tolerance of the R88L-EC-GW0303 is as follows:
•
The flatness of the Motor Coil Unit mounting surface must be 0.1 mm.
•
The flatness of the Magnet Track mounting surface must be 0.1 mm.
•
The parallelism between the two mounting surfaces must be 0.05 mm.
z
Magnetic Attraction Force
•
In an ironless Linear Motor, no magnetic attraction force is exerted when the motor is
de-energized.
•
In an ironless Linear Motor, a bending force is exerted if the Motor Coil Unit inclines. Therefore, it
is important that the above tolerance for parallelism be strictly observed.
4-1-3
Ironless Linear Motor Installation Conditions
Installation Conditions
Connector Box
External Encoder
Stopper
Linear Guide
Motor Coil Unit
Magnet Track
Moving Table
A
0.1
0.05
0.05
//
A
