1. Introduction
— 1-2 —
1.1. Notes to Users
1.1.1. Notes for Safety
For your safety, you should read this manual thoroughly and understand the contents before operating the
Megatorque Motor System.
The following notices are added to give particular emphasis on the safety precautions in this manual.
Danger : A matter that might cause serious injuries.
Warning : A matter that might result in injuries.
Caution : A matter that might result in the breakdown of equipment into which the
Motor is installed or the break down of the mechanism surrounding the
Motor.
1.1.2. Precautions for Use
Pay special attention to the following when installing, checking and troubleshooting the Megatorque
Motor System.
Caution : When making a combination of a Motor and a Driver Unit, confirm that
their specifications for Motor size and maximum Motor torque match each
other.
• This is because the Driver Unit holds the unique parameter settings for a matching
Motor.
• Refer to “2.4.Standard Combination List” for the combination.
• Make sure that the reference numbers on each identification plate of a Motor and a
Driver Unit indicate the same coding for Motor size, Motor maximum torque and
position sensor.
• If the reference numbers are not matched, the Motor may lose its accuracy and emit
noise, and furthermore, it may not move or lose its control.
Caution : Do not cut the Cable Set, or do not hook it up to other cable.
• The modification of the Cable Set may worsen the Motor and Driver Unit
performances, typically positioning accuracy and repeatability of the resolver.
Caution : Never disassemble the Motor because it has been precisely assembled
and tuned.
• If disassembled, it may cause abnormalities such as deterioration in rigidity and
positioning accuracy, and generation of noise.
Caution : Be sure to connect protective ground of the Driver unit Model EDD.
• Failure to do so may cause an electric shock.
Danger : Be sure to connect the Emergency Stop signal circuit to the EMST port of
the CN2 control I/O connector.
• Please set the System so that you can immediately stop the Motor in case of an
emergency.
Caution : Do not remove the panel of the Driver Unit so as not to cause an electric
shock. It is extremely dangerous due to high voltage present.
• Driver Units have high capacity electrolytic capacitors in its internal circuits, and
thus resulting in high residual voltage of the capacitors for few minutes after the
main power is turned off.
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