vi
Safety Precautions
This section describes important precautions that must be followed during storage, transportation, installation,
wiring, operation, maintenance, inspection, and disposal. Be sure to always observe these precautions thor-
oughly.
WARNING
• Never touch the rotating parts of the motor during operation or adjustments.
Failure to observe this warning may result in injury.
• Before starting operation with a machine connected, make sure that an emergency stop can be
applied at any time.
Failure to observe this warning may result in injury or damage to the product.
• Never touch the inside of the power regeneration converters and SERVOPACKs.
Failure to observe this warning may result in electric shock.
• Do not remove the cover of power supply terminal while the power is ON.
Failure to observe this warning may result in electric shock.
• Do not touch terminals before the main-circuit capacitor has had time to discharge after the power
has been turned OFF because high voltage may still remain in the power regeneration converter
and SERVOPACK. Refer to
7.2.1 Main Circuit
for the details of discharge time of main-circuit
capacitor.
Residual voltage may cause electric shock.
• Do not touch terminals while the charge indicator is lit.
Residual voltage may cause electric shock.
After the charge indicator goes out, check the voltage on the DC bus line (i.e., between the P and N terminals)
with a voltage tester before you perform wiring or inspection work.
• Do not touch terminals before the main-circuit capacitor has had time to discharge after voltage
resistance test. Refer to
7.2.1 Main Circuit
for the details of discharge time of main-circuit capacitor.
Residual voltage may cause electric shock.
• Make sure that trial operation was completed successfully before you make adjustments.
Failure to observe this warning may result in injury or damage to the product.
• Follow the procedures and instructions for the trial operation as noted in the applicable manual for
that product.
Malfunctions that occur after the motor is connected to the equipment not only damage the equipment, but
may also cause an accident resulting in death or injury.
• The output range of multiturn data for
Σ
-
V
-SD driver absolute detection system differs from that for
conventional systems (15-bit encoder and 12-bit encoder). Especially when “Infinite length position-
ing system” of
Σ
series is to be configured with
Σ
-
V
-SD series, be sure to make the system modifi-
cation.
• When you set up the absolute encoder, the multiturn data will change to between minus two and
plus two turns. This will cause the reference position of the machine to change. Adjust the reference
position at the host controller to the correct position after you perform the setup.
If the machine is operated without aligning the position in the host controller, unintended operation may occur
and may result in injuries or damage to the machine. Be careful when starting the machine to ensure that this
does not occur.
• The multiturn limit value must be changed only for special applications.
Changing it inappropriately or unintentionally can be dangerous.
• If the Multiturn Limit Disagreement alarm occurs, check the setting of parameter Pn205 in the SER-
VOPACK to be sure that it is correct.
If the multiturn limit value setting is implemented while an incorrect value is set in Pn205, an incorrect value
will be set in the encoder. The alarm will disappear even if an incorrect value is set, but incorrect positions
will be detected, resulting in a dangerous situation where the machine will move to unexpected positions.
• Do not remove the front cover, cables, connectors, or optional items on the foreside while the power
is ON.
Failure to observe this warning may result in electric shock.
• Do not damage, press, exert excessive force or place heavy objects on the cables.
Failure to observe this warning may result in electric shock, stopping operation of the product, or fire.
• Do not modify the product.
Failure to observe this warning may result in injury, damage to the product, or fire.
