Instantaneous Power Interruption Settings - YASKAWA SGDV series User Manual

4.2.9 Instantaneous Power Interruption Settings

Determines whether to continue operation or turn OFF the servomotor's power when the power supply voltage
to the main circuit power supply of the SERVOPACK and converter is interrupted.
Instantaneous Power Cut Hold Time
Pn509
Setting Range
If the power interruption time is shorter than the set value in Pn509, the servomotor will continue operation. If
it is longer than the set value, the servomotor's power will be turned OFF during the power interruption. The
servomotor is turned ON when power supply to the main circuit recovers.
Set value for Pn509 ≥ OFF time (t)
Instantaneous power interruption
Main circuit
power supply
Set value for
Pn509
Servomotor
Power ON
status
Instantaneous power interruption
Note: If the instantaneous power interruption is longer than the set value of Pn509, the /S-RDY signal turns OFF.
If the uninterruptible power supplies are used for the control power supply and main circuit power supply, the
SERVOPACK can withstand an instantaneous power interruption period of 50,000 ms max.
Setting Unit
20 to 50000 1 ms
OFF time (t)
Set value for
Pn509 ≥ OFF time (t)
Operation
continues.
• If the control power supply makes control impossible during an instantaneous power
interruption, the same operation will be performed as for normally turning OFF the
power supply, and the setting of Pn509 will be ignored.
• The holding time of the main circuit power supply varies with the output of the SER-
VOPACK. If the load on the servomotor is large and an undervoltage alarm (A.410)
occurs, the setting of Pn509 will be ignored.
• The holding time of the control power supply (24 VDC) for the 400-V SERVOPACKs
depends on the capability of the power supply (not included). Check the power supply
before using the application.
Speed Position
Factory Setting When Enabled
20
Set value for Pn509 < OFF time (t)
Instantaneous power interruption
Main circuit
power supply
Set value for
Pn509
Servomotor
Power ON
status
Instantaneous power interruption
4.2 Basic Functions Settings
Torque
Classification
Immediately Setup
OFF time (t)
Set value for
Pn509 < OFF time (t)
Power OFF
Forced
Depends on the functions of
OFF.
the command option module.
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