Instantaneous Power Interruption Settings; Motor Maximum Speed - YASKAWA Σ-V Series User Manual

4.2.9 Instantaneous Power Interruption Settings

Determines whether to continue operation or turn the linear servomotor's power OFF when the power supply
voltage is interrupted.
Instantaneous Power Cut Hold Time
Pn509
Setting Range
An instantaneous power interruption will be detected when the main circuit power supply is turned OFF. If the
time required to restore the main circuit power supply is less than the parameter set value, the servo will con-
tinue operating. If the restoration time is the equal to or greater than the set value, the linear servomotor's
power is turned OFF.
Set value for Pn509 ≥ OFF time (t)
Instantaneous power interruption
Main circuit
power supply
Set value for
Pn509
Linear
Power ON
servomotor
status
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 in excess of 1000 ms.

4.2.10 Motor Maximum Speed

By setting the linear servomotor maximum speed to a lower speed, the following effects can be obtained.
• More delicate speed control and more strict protection by generating the overspeed alarm (A.510)
• Allows the upper limit of Encoder Output Resolution (Pn281) to be set higher.
For details, refer to 4.2.5 Encoder Output Pulse.

Motor Maximum Speed

Pn385 Setting Range
1 to 100
Setting Unit
20 to 1000 1 ms
OFF time (t)
Set value for
Pn509 ≥ OFF time (t)
Operation
continues.
• The holding time of the control power supply for the 200 V SERVOPACK is approxi-
mately 100 ms, but the time of the control power supply for the 100 V SERVOPACKs
is approximately 65 ms. If the control power supply makes control impossible during
an instantaneous power interruption, the same operation will be performed as for nor-
mally turning OFF the power supply, and the setting of the parameter 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 linear servomotor is large and an undervoltage alarm
(A.410) occurs, the parameter 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.
Setting Unit
100 mm/s
4.2 Settings for Common Basic Functions
Position
Speed
Factory Setting When Enabled
20
Set value for Pn509 < OFF time (t)
Instantaneous power interruption
Main circuit
power supply
Set value for
Pn509
Linear
Power ON
servomotor
status
Position
Speed
Factory Setting When Enabled
50 After restart
Force
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.
Force
Classification
Setup
4
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