Omron SYSDRIVE MX2 SERIES User Manual page 212

5-8 Restart Functions
Parameter
5
C021 to
C022, C026
*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.
5-97
Function name
No.
Frequency
Matching Lower
b007
Limit Frequency
Setting
Overvoltage/
b008 Overcurrent
Restart Selection
Overvoltage/
Overcurrent
b010
Restart Count
Selection
Overvoltage/
Overcurrent
b011
Restart Standby
Time
Frequency Pull-in
b028
Restart Level
Frequency Pull-in
b029
Restart Parameter
Starting
Frequency at
b030
Frequency Pull-in
Restart Selection
Multi-function
Output Terminal
Selection
Multi-function
Relay Output
Function Selection
Data Description
If the frequency drops to b007 or
0.00 to
below while the motor is running
400.0
freely, the Inverter restarts at 0
(1000.)
Hz. (examples 3, 4)
00 Trip
01 0 Hz restart
02 Frequency matching restart
Trip after frequency matching
03
deceleration stop
04 Frequency pull-in restart
Number of retries for restart upon
overvoltage/overcurrent
1 to 3
0.3 to 100. Wait time until restart
0.20 × Rated
current to Current limit level at frequency
2.00 × Rated pull-in restart
current
Frequency reduction time at
0.1 to 3000.
frequency pull-in restart
00 Frequency at interruption
01 Maximum frequency
02 Set frequency
09 UV: Signal during undervoltage
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-Axxxx)
Default
Unit
setting
0.00 Hz
00 −
*5
3 Time
1.0 s
Inverter
rated A
current
0.50 s
−
00
− −