Omron SYSDRIVE 3G3FV User Manual page 276

Advanced Operation
Note 1. This parameter cannot be changed during operation.
Note 2. N.A. = Not applicable.
There is normally no need to change this setting.
Set this parameter when a high-speed motor is being used in the high-speed range (the high frequen-
cy range above the base frequency).
The standard target setting is 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.)
Acceleration stall
prevention level
When the motor is used in the high-speed range, the acceleration stall prevention
level is automatically lowered to provide smoother acceleration.
The acceleration stall prevention limit (L3-03) limits how much the acceleration
stall prevention level is lowered so that it isn't lowered any more than necessary.
Parameter Display name p y
number
L3-04 StallP Decel Sel
Note This parameter cannot be changed during operation.
Setting
0 Disabled. (Decelerate according to the settings. Main circuit over-voltage may occur if the
deceleration time is too short.)
1 Enabled. (Stops deceleration if the main circuit voltage exceeds the over-voltage level. Decelerate
again when voltage recovers.)
2 Intelligent. (Decelerate as fast as possible judging from the main circuit voltage. Ignore the
deceleration time setting.)
3 Enabled. (Stall preventive function using a Braking Resistor or Braking Resistor Unit.)
If the parameter is set to 1, the deceleration time will be automatically prolonged without using the
braking function (i.e., without using a Braking Resistor or Braking Resistor Unit and Braking Unit) so
that the main circuit overvoltage (OV) will not result.
Set the parameter to 0 or 3 when using the braking function (i.e., using a Braking Resistor or Braking
Resistor Unit and Braking Unit), otherwise the braking function cannot be used and the deceleration
time will not be shortened. If 3 is set, part of deceleration time will be automatically prolonged to pre-
vent main circuit overvoltage (OV) with the braking function (a Braking Resistor or Braking Resistor
Unit and Braking Unit) used. As a result, the possible set time will be shorter than that possible with the
parameter set to 0, and the deceleration time will be shortened as well. Set the parameter to 0, howev-
er, if it is desired to decelerate the motor in the set deceleration time.
6-102
E1-06
Base frequency (F )
A
Setting g Units Default
range setting
0 to 3 --- 1
Function
L3-02
(Acceleration stall prevention level)
L3-03
(Acceleration stall prevention limit)
Output frequency
Valid access levels
V/f V/f with Open Loop
Control PG
Basic or Advanced
Chapter 6
Flux
Vector Vector