NSK Megatorque PS Series User Manual

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11.3.27. Warning P5: Main Power Under Voltage
 The main power voltage must be in the specification to activate the Motor servo. The Driver
Unit gives this warning when the main power voltage is too low to activate the Motor servo.
Table 11-36: Cause and remedy for the warning P5
Cause Remedy
(1)
Commutation voltage falls below
+ 60 [V] (correspond to the input
voltage of 40 [VAC]) because the
main power supply voltage is lower
than the specification.
• Confirm the voltage of main power supply and turn on the power
again.
(2)
The input SVON is inputted before
the main power is turned on
(3)
Simultaneously input the input
SVON and the main power supply.
• Wait for 0.5 [s] or more after the main power is turned on and turn
on the input SVON.
(4) Defective Cable, Motor or Driver Unit
• Check the Motor and the Cable referring to “Appendix 2: how to
Check Motor Condition” and replace them if necessary.
• If the above measures do not work, the Driver Unit may be
defective. Replace it referring to “Appendix 4: Procedure for
Replacing Driver Unit”.
(1) The input ACLR (Alarm clear) or the command CL (Clear alarm) after the cause of the warning
is removed.
11.3.28. Alarm P9: Power Module Alarm
 The Driver Unit has the power module to flow the current through the Motor. The Driver Unit
gives the alarm when the power module generates heat abnormally or supplies excessive current
to the Motor.
Table 11-37: Cause and Remedy for the alarm P9
Cause Remedy
(1)
The power module on the power
amplifier is overheated.
• Review the rate of operating time and the idle time (Increase the
idle time)
• Decrease the moment of inertia.
• Reduce acceleration and deceleration.
• Review the environment for installing Driver Unit
(2)
Defective insulation of the Motor
cable
(3)
Defective insulation of the Motor
winding
• Visually check the Motor cable for damage on the cable cover
• Check the Motor and the Cable referring to “Appendix 2: how to
Check Motor Condition” and replace them if necessary.
(4)
Defective control power supply on
the power amplifier
• If the above measures do not work, the Driver Unit may be
defective. Replace it referring to “Appendix 4: Procedure for
Replacing Driver Unit”.
(1) Cool off the Driver Unit by air cooling when this alarm occurs.

NSK Megatorque PS Series Specifications

General

Brand	NSK
Model	Megatorque PS Series
Category	Engine
Language	English