Omron SYSDRIVE 3G3FV User Manual page 277

Advanced Operation
When this parameter is set to 3, in contrast to a setting of 0, the deceleration time is automatically
prolonged with main axis overvoltage (OV) easily detected. Therefore the actual deceleration time
becomes longer than the deceleration time that has been set. This can be adjusted, however, by set-
ting a shorter deceleration time than for the 0 setting, so that the actual deceleration time will also be
shorter.
Note The parameter cannot be set to 3 in flux vector control.
Deceleration Stall Prevention Example: L3-04 = 1
Output frequency
Parameter Display name p y
number
L3-05 StallP Run Sel
Note This parameter cannot be changed during operation.
Setting
0 Disabled. (Run according to the settings. Stalls may occur with large loads.)
1 Enabled – deceleration time 1. (Use deceleration time in C1-02 for stall prevention function.)
2 Enabled – deceleration time 2. (Use deceleration time in C1-04 for stall prevention function.)
When setting 1 or 2 (enabled) is selected, deceleration is started if the run stall prevention level's cur-
rent continues for more than 100 ms. The motor is accelerated back to the reference frequency again
when the current falls below this level.
Parameter Display name p y
number
L3-06 StallP Run Level
Note This parameter cannot be changed during operation.
This setting is valid when L3-05 is set to 1 or 2.
Normally it isn't necessary to change this setting.
Decrease this setting when the motor's capacity is small compared to the Inverter's capacity or stalling
occurs when the motor is operated with the default setting. The standard target setting is 2 to 3 times
the motor's rated current. (Set this current value as a percentage of the Inverter's rated current, i.e.,
100% corresponds to the Inverter's rated current.)
The deceleration time is controlled
to prevent overvoltage.
Deceleration time
(set value)
Setting g Units Default
range setting
0 to 2 --- 1
Function
Setting g Units Default
range setting
30 to 200 % 160
Valid access levels
V/f V/f with Open Loop
Control PG
Basic or Advanced Not applicable.
Valid access levels
V/f V/f with Open Loop
Control PG
Basic or Advanced Not applicable.
Chapter 6
Time
Flux
Vector Vector
Flux
Vector Vector
6-103