4 System Design
4 - 6
G5-series Linear Motors/Servo Drives With Built-in EtherCAT Communications
•
Provide appropriate ventilation as required to prevent excessive rise of the ambient temperature
since the heat is dissipated into the air.
•
If the rise of the ambient temperature must be suppressed for a certain application, or if the
moving table dimensions are small, calibrate the cooling system separately to cool the Motor Coil
Unit.
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Rigidity of Linear System
The response performance of a linear system is affected by the rigidity of the Linear Slider. Ensure
that the rigidity is appropriate for the required performance. If a gain is set to higher than the
machine rigidity, the vibration occurs.
Take the following measures to improve rigidity.
•
Use preloaded linear guides. This makes the Linear Slider highly rigid with less play in the
mechanical system.
•
Ensure the rigidity of the base material to which the Linear Slider is secured. The materials in
descending order of rigidity: granite, steel, and aluminum.
•
The moving table must have a sufficient thickness to prevent deformation and vibration.
•
Install the Magnet Track and external encoder in a straight and parallel line.
•
Install the external encoder as close to the Motor Coil Unit as possible.
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Allen Head Bolts Used for Motor Coil Unit
For the Motor Coil Unit, use steel allen head bolts that meet the following requirements.
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Allen Head Bolts Used for Magnet Track
For the Magnet Track, use steel allen head bolts that meet the following requirements.
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Notice
Each Magnet Track unit includes a protective cover that
reduces the effect of the magnetic field. Do not remove this
protective cover until the Magnet Track installation is
completed.
Bolt for Motor Coil Unit
R88L-EC-FW-03
R88L-EC-FW-0306
R88L-EC-FW-0606
R88L-EC-FW-0609
R88L-EC-FW-0612
R88L-EC-FW-1112
R88L-EC-FW-1115
Nominal diameter
M4
Fitting length of bolt
4 mm min.
5 mm max.
Tightening torque [N·m]
2.0 to 3.0
Bolt for Magnet Track
R88L-EC-FM-03
R88L-EC-FM-06
R88L-EC-FM-11
Nominal diameter
M5
M5
M5
Head size
Use low head allen head bolts.
Head diameter: 8.5 mm or less
Head height: 3.5 mm or less
Head diameter: 8.5 mm
or less
Head height: 5 mm or
less
Installation Procedure
Protective cover
