Fuji Electric ALPHA7, User Manual

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CHAPTER 4 PARAMETER
4-90
Extended Function Setting Parameters
4
PA2_66 Flying start at speed control
No. Name Setting range
Default
value
Change
66
Flying start at speed
control 0: No flying start
1: Flying start
0 Power
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.
The speed at the timing of control power-on is not picked in this case.
PA2_67 Alarm detection at undervoltage
No. Name Setting range
Default
value
Change
67
Alarm detection at
undervoltage 0: No detection
1: Detection
1 Power
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. Name Setting range
Default
value
Change
68
Main power shutoff
detection time
35 [ms] to 1000 [ms] 35 Power
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.