Omron SYSDRIVE RV Series User Manual page 240

Related Parameters
Param-
eter
Number
Overvolt-
age inhibit
selection
L3-11
OV Inhibit
Sel
Overvolt-
age inhibit
voltage
level
L3-12
OV Inhbt
VoltLvl
* These are values for a 200 V Class Inverter. Values for a 400 V Class Inverter are double.
Setting Precautions
When this function is enabled, if the main circuit voltage rises, the regenerative torque limit will decrease to a
value less than its set value and so the motor will not rotate at the speed specified by the speed reference.
Therefore, in applications where it is necessary to rotate the motor at the speed specified by the speed refer-
ence, disable this function and use a converter, a dynamic braking resistor, or a power regenerative unit to sup-
press rises in the main circuit voltage.
-32
6
Name
Description
Display
0: Disabled
1: Enabled
Used to enable or disable the
function for inhibiting main
circuit overvoltages by
reducing the regenerative
torque limit according to the
main circuit overvoltage
level.
If this function is enabled,
when the main circuit volt-
age rises, operation will be
performed with the regenera-
tive torque less than the set
value.
Sets the main circuit voltage
level for which the regenera-
tive torque limit is restricted
to 0.
Usually, there is no need to
change this setting.
If main circuit overvoltages
occur even with the over-
voltage inhibit function
enabled, reduce this setting.
Control Methods
Change
Setting Factory during
Range Setting Opera-
V/f
tion
0 or 1 0 No No
350 to
380V
No No
390
*
*
Regis-
V/f Open Flux
ter
with Loop Vec-
PG Vector tor
No A A 4C7H
No A A 4C8H