Preventing Overvoltage During Deceleration (Stall Prevention During Deceleration Function) - Omron I537-E2-01 User Manual

‹
Preventing Overvoltage During Deceleration (Stall Prevention During Decelera-
tion Function)
This function automatically lengthens the deceleration time with respect to the DC-bus voltage to avoid over-
voltage tripping.
„
Related Parameters
Name
Param-
eter-
LCD Display
Number
Stall prevention selec-
tion during deceleration
function selection
L3-04
StallP Decel Sel
„
Setting Example
An example of stall prevention during deceleration when L3-04 is set to 1 as shown below
.
Output frequency
„
Setting Precautions
The stall prevention level during deceleration differs depending on the inverter rated voltage and the input
•
voltage. Refer to the following table for details.
Inverter Rated/Input Voltage
200 V class
E1-01 ≥ 400 V
400 V class
E1-01 < 400 V
When using the braking option (Braking Resistor Units and Braking Units), be sure to set parameter L3-04
•
to 0.
Description
0: Disabled (Motor decelerates according to setting. When the
deceleration time is short, there is a risk of DC bus overvol-
tage (0V) occurring.)
1: Enabled (Prevents deceleration when DC bus voltage rea-
ches the overvoltage level. Deceleration restarts after
voltage has been restored.)
2: Optimum adjustment (Minimizes deceleration judging from
DC bus voltage. The deceleration time setting is ignored.)
If using the dynamic brake option (Braking Resistor Units and
Braking Units), be sure to set parameter L3-04 to 0.
Deceleration time
(set value)
Fig 6.21 Stall Prevention During Deceleration Operation
Acceleration and Deceleration Characteristics
Setting Factory
Range Setting
0 to 2
Deceleration time controlled to
prevent overvoltage
Time
Stall Prevention Level during Deceleration (V)
380
760
660
Change
during Acess
Opera- Level
tion
1 No A
21
6-