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CHAPTER 4 PARAMETER
PA2_66 Flying start at speed control
No.
Flying start at speed
66
control
This parameter is enabled only for VS type.
The parameter is enabled under speed control.
If servo-on is turned on during free-run operation, the speed at the timing is picked and acceleration
begins at the speed.
If the control power of the servo amplifier is turned off, the dynamic brake is applied, causing sudden
stop.
4
The speed at the timing of control power-on is not picked in this case.
PA2_67 Alarm detection at undervoltage
No.
Alarm detection at
67
undervoltage
Select whether or not to detect alarms when undervoltage is detected.
The detected alarms include control power undervoltage and main power undervoltage.
PA2_68 Main power shutoff detection time
No.
Main power shutoff
68
detection time
Specify the time for detecting shutoff of the main power. Power supply phases to be detected are L1
and L2.
The AC power is detected.
If power is restored after the time specified in this parameter since the main power is turned off with
servo-on turned on, a main circuit power undervoltage alarm (LVP) is caused.
Avoid repeating turning on or off frequently in a short time.
However, if power is restored after the time specified in this parameter and 1 [s], no alarm is detected.
To supply DC power, set at 1000 [ms]. If this is the case, the detection function is canceled.
To supply AC power, leave the default value unchanged in regular cases.
4-88
Extended Function Setting Parameters
Name
0: No flying start
1: Flying start
Name
0: No detection
1: Detection
Name
35 [ms] to 1000 [ms]
Setting range
Setting range
Setting range
Default
Change
value
0
Power
Default
Change
value
1
Power
Default
Change
value
35
Power
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