YASKAWA UAK series User Manual page 9

• Do not connect the motor directly to a commercial power supply.
The motor may be damaged. Connect the motor to the correct SERVOPACK.
• Securely connect the power supply terminal screws and motor connection terminal screws.
Failure to observe this caution may result in fire.
• Do not touch the power terminals before the main-circuit capacitor has had time to discharge
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.
First make sure the charge indicator is turned OFF and that the DC-bus (symbol: P and N) voltage value is
correct by using a tester or other device before wiring or starting an inspection.
• Observe the following precautions when wiring main circuit terminal blocks.
• Do not turn the servo drive power ON until all wiring, including the main circuit terminal blocks has been
completed.
• If the main circuit terminal is the connector, remove the connector from the SERVOPACK prior to wiring.
• Insert only one wire per insertion slot on the terminal block and the connector.
• Make sure that the core wire is not electrically shorted to adjacent core wires.
• Always use the specified power supply voltage.
An incorrect voltage may result in fire.
• Make sure that the polarity is correct.
Incorrect polarity may cause ruptures or damage.
• Take appropriate measures to ensure that the input power supply is supplied within the specified
voltage fluctuation range. Be particularly careful in places where the power supply is unstable.
An incorrect power supply may result in damage to the product.
• Install external breakers or other safety devices against short-circuiting in external wiring.
Failure to observe this caution may result in fire.
• For the control power supply, use a 24-VDC power supply with double insulation or reinforced insu-
lation against primary. Make sure that the output holding time is 100 ms or more.
• Do not reverse the polarity of the battery when connecting it.
Failure to observe this caution may damage the battery, power regeneration converter, SERVOPACK, and
motor or cause it to explode.
• Install the battery at the power regeneration converter.
It is dangerous to install batteries at encoder cable, because that sets up a loop circuit between the batteries.
• The motor does not provide overheating protection. If complying with NEC (National Electric Code)
is necessary, implement overheating protection for the motor. However, overheating protection is
not required if you use a SGMGV servomotor or UAKAJ spindle motor. (This is because continuous
operation is possible within the ratings and SERVOPACK protection will function if the ratings are
exceeded.)
Operation
• Always use the motor and SERVOPACK in one of the specified combinations.
Failure to observe this caution may result in fire or malfunction.
• Conduct trial operation on the motor alone with the motor shaft disconnected from machine to avoid
any unexpected accidents.
Failure to observe this caution may result in injury.
• During trial operation, confirm that the holding brake works correctly. Furthermore, secure system
safety against problems such as signal line disconnection.
• Before starting operation with a machine connected, change the settings to match the parameters
of the machine.
Starting operation without matching the proper settings may cause the machine to run out of control or mal-
function.
• Avoid frequently turning the power ON and OFF.
Since the Σ-V-SD driver have a capacitor in the power supply, a high charging current flows when power is
turned ON. Frequently turning the power ON and OFF causes main power devices like capacitors and fuses in
the power regeneration converter and the SERVOPACK to deteriorate more quickly, resulting in unexpected
problems.
• Forced stop function with forward/reverse overtravel is not effective during JOG mode operation
and zero point search using SigmaWin for Σ-V-SD (MT).
CAUTION
CAUTION
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