5-97
5-8 Restart Functions
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-A@@@@)
5
Functions
b007
Frequency
Matching Lower
Limit Frequency
Setting
0.00 to
400.0
(1000.)
If the frequency drops to b007 or
below while the motor is running
freely, the Inverter restarts at 0
Hz. (examples 3, 4)
0.00 Hz
b008
Overvoltage/
Overcurrent
Restart Selection
00 Trip
00 −
01 0 Hz restart
02 Frequency matching restart
03
Trip after frequency matching
deceleration stop
04 Frequency pull-in restart
b010
Overvoltage/
Overcurrent
Restart Count
Selection
1 to 3
Number of retries for restart upon
overvoltage/overcurrent
*5
3Time
b011
Overvoltage/
Overcurrent
Restart Standby
Time
0.3 to 100. Wait time until restart 1.0 s
b028
Frequency Pull-in
Restart Level
0.20 × Rated
current to
2.00 × Rated
current
Current limit level at frequency
pull-in restart
Inverter
rated
current
A
b029
Frequency Pull-in
Restart Parameter
0.1 to 3000.
Frequency reduction time at
frequency pull-in restart
0.50 s
b030
Starting
Frequency at
Frequency Pull-in
Restart Selection
00 Frequency at interruption
00 −01 Maximum frequency
02 Set frequency
C021 to
C022, C026
Multi-function
Output Terminal
Selection
Multi-function
Relay Output
Function Selection
09 UV: Signal during undervoltage −−
*1.Even when Retry Selection (b001) is set to any restart function (01 to 03) and Momentary Power
Interruption/Undervoltage Trip during Stop Selection (b004) is disabled (00 or 02), a trip still occurs if
the momentary power interruption time exceeds the allowable momentary power interruption/
undervoltage time. (Example 2)
*2.Even if a restart function is selected, the Inverter trips when undervoltage remains for 40 seconds or
longer.
*3.0 Hz restart may occur in the following cases:
• The output frequency is one-half the base frequency or below
• The induced voltage of the motor attenuates quickly
*4.If an overvoltage/overcurrent trip occurs during declaration, Undervoltage Error E09 is displayed and
the motor goes into free-run status. In this case, increase the deceleration time.
*5.Even when a restart operation upon trip is selected, the Inverter continues to trip if the cause of the trip
is not yet removed after Restart Standby Time (b003) elapses. In this case, increase the restart standby
time.
Parameter
No.
Function name Data Description
Default
setting
Unit
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