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3. For injury prevention
CAUTION
Do not apply a voltage other than that specified in this manual and the instruction manual of the
product you are using on any terminal.
Doing so may lead to destruction or damage.
Do not mistake the terminal connections, as this may lead to destruction or damage.
Do not mistake the polarity ( + / - ), as this may lead to destruction or damage.
Do not touch the heat radiating fins of position board or servo amplifier, regenerative resistor and
servo motor, etc., while the power is ON and for a short time after the power is turned OFF. In this
timing, these parts become very hot and may lead to burns.
Always turn the power OFF before touching the servo motor shaft or coupled machines, as these
parts may lead to injuries.
Do not go near the machine during test operations or during operations such as teaching.
Doing so may lead to injuries.
4. Various precautions
Strictly observe the following precautions.
Mistaken handling of the unit may lead to faults, injuries or electric shocks.
(1) System structure
CAUTION
Always install a leakage breaker on the controller incorporating the position board and servo
amplifier power source.
If installation of an electromagnetic contactor for power shut off during an error, etc., is specified in
the instruction manual for the servo amplifier, etc., always install the electromagnetic contactor.
Install the emergency stop circuit externally so that the operation can be stopped immediately and
the power shut off.
Use the position board, servo amplifier, servo motor and regenerative resistor with the correct
combinations listed in the instruction manual. Other combinations may lead to fire or faults.
If safety standards (ex., robot safety rules, etc.,) apply to the system using the position board,
servo amplifier and servo motor, make sure that the safety standards are satisfied.
Construct a safety circuit externally of the position board or servo amplifier if the abnormal
operation of the position board or servo amplifier differ from the safety directive operation in the
system.
In systems where coasting of the servo motor will be a problem during the forced stop, emergency
stop, servo OFF or power supply OFF, use dynamic brakes.
Make sure that the system considers the coasting amount even when using dynamic brakes.
In systems where perpendicular shaft dropping may be a problem during the forced stop,
emergency stop, servo OFF or power supply OFF, use both dynamic brakes and electromagnetic
brakes.