— 1-2 —
！
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.
！
Danger : Do not place other objects in the path of the Motor when the Motor
power is on. An unexpected motion of the Motor may result in injury
and/or damage to the System or other mechanism.
！
Danger : Always stay in a safe place away from the operating area of the Motor
when the System is powered on.
！
Danger : If the Motor is fitted with an arm or similar devices, take extra care to
assure that no obstacles are in or around the Motor work area.
！
Caution : Use of an optional dump resistor shall be considered for a heavy-duty
operation.
• The Megatorque Motors regenerate when they decelerate carrying heavy load
inertia.
• An internal capacitor charges the Motor regeneration. However, when high
and continuous regeneration exceeding its capacity is applied, excess energy
activates an alarm “Alarm P1: Abnormal main power voltage” and the Motor
stops.
• In such a case, you need to decrease velocity, deceleration rate, and operation
duty cycle, or you require an external high capacity dump resistor.
！
Danger: Never apply water or oil to the Driver Unit.
• Take appropriate measures to protect the Driver Unit from water, oil, slag,
dust, and corrosive gas.
Figure 1-2: EDC Driver Unit
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