Instruction manual

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CAUTION
Do not modify the linear servo motor.
Take safety measures, e.g. provide covers, to prevent accidental access to the linear servo motor during
operation.
The dynamic brake can be applied to the linear servo motor, but the coasting distance becomes longer
when the moving body is heavy or when the speed is high. It may result in crashing into the stroke edge,
which is highly dangerous. Install the anti-crash mechanism such as an air brake or an electric/mechanical
stopper such as a shock absorber to reduce the shock of movable parts. (No linear servo motor with an
electromagnetic brake is available.)
The magnetic suction power acting between the primary side (coil) and the secondary (magnet) is always
acting even when the motor power is not turned on. Because of this, the machine must be designed to be
rigid enough to resist the magnetic suction power and maintain the accuracy.
The running load by friction increases in proportion to the increase of the magnetic suction power, so the
design must be made to decrease as much friction as possible, for example, by mounting guides with high
accuracy.
Do not use for vertical motion applications since magnetic poles cannot be detected with a vertical
application.
Install the linear servo motor the way in which the thrust acts on the gravity center of the movable part.
When the thrust does not act on the gravity center of the movable part, the moment is generated.
Magnetic chips such as iron fragments can be attached to the permanent magnet on the secondary side,
which may cause a malfunction. In the environment like this, take measures against the attachment and
entry of magnetic chips.
When the linear servo motor is operated over a long term under the condition where water for cutting or
lubrication oil is splashed or where oil mist or dew condensation occurs due to supercooling or high
humidity, insulation deterioration or other failures may be caused. Prevent the linear servo motor from oil
and dust with a cover and take measures against dew condensation.
More careful measures against oil and dust must be taken for the linear encoder than the linear servo
motor. For details, please contact the linear encoder manufacturer individually.
The moving direction of the linear servo motor and linear encoder must be matched. Otherwise, the motor
may run out of control.
When two or more secondary side (magnet) is mounted, set the mounting screw accumulative pitch
tolerance within
0.2mm. Clearance may be left between the secondary sides (magnets) depending on
the mounting method and the numbers.
Do not hit the primary side (coil) on the stopper. The primary side may be damaged. Design the machine
so that the stopper is hit on the top table attached to the primary side (coil).
Tap holes on the linear servo motor are for machine installation. Do not use for other purposes.
Do not touch the linear servo motor with wet hands.
For installation, use all screw halls and tap holes prepared on the linear servo motor.
When the equipment has been stored for an extended period of time, consult Mitsubishi.
When you keep or use it, please fulfill the following environmental conditions.
Conditions
Environment
Servo amplifier Linear servo motor
[
] 0 to 55 (non-freezing) 0 to 40 (non-freezing)
During
operation
[
] 32 to 131 (non-freezing) 32 to 104 (non-freezing)
[
] 20 to 65 (non-freezing) 15 to 70 (non-freezing)
Ambient
temperature
In storage
[
] 4 to 149 (non-freezing) 5 to 158 (non-freezing)
In operation 90%RH or less (non-condensing) 80%RH or less (non-condensing)
Ambient
humidity
In storage 90%RH or less (non-condensing)
Ambience Indoors (no direct sunlight) Free from corrosive gas, flammable gas, oil mist, dust and dirt
Altitude Max. 1000m above sea level
Vibration 5.9 m/s
2
or less
LM-H2 Series
LM-U2 Series
X Y : 49 m/s
2