4.2 Settings for Common Basic Functions
4-21
4
Operation
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.
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.
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.
Pn509
Instantaneous Power Cut Hold Time
Classification
Setting Range
Setting Unit
Factory Setting
When Enabled
20 to 1000
1 ms
20
Immediately
Setup
• 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.
Speed
Position
Force
Instantaneous power interruption
Set value for Pn509
≥
OFF time (t)
OFF time (t)
Power OFF
Set value for
Pn509
≥
OFF time (t)
Set value for Pn509 <
OFF time (t)
Main circuit
power supply
Set value for
Pn509
Linear
servomotor
status
Power ON
Instantaneous power interruption
Set value for Pn509 < OFF time (t)
Forced
OFF.
OFF time (t)
Main circuit
power supply
Set value for
Pn509
Linear
servomotor
status
Power ON
Operation
continues.
Depends on the functions of
the Command Option
Module.
Motor Maximum Speed
Classification
Pn385
Setting Range
Setting Unit
Factory Setting
When Enabled
1 to 100
100 mm/s
50
After restart
Setup
Speed
Position
Force
