Omron SYSDRIVE 3G3RV Series User Manual

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34
Improved Operating Efficiency
This section explains functions for improving motor operating efficiency.
K
KK
K Reducing Motor Speed Fluctuation (Slip Compensation Function)
When the load is large, the amount of motor slip also grows large and the motor speed decreases. The slip
compensation function controls the motor at a constant speed, regardless of changes in load. When the motor
is operating at the rated load, parameter E2-02 (Motor Rated Slip) × the frequency in parameter C3-01 is
added to the output frequency.
nRelated Parameters
*The factory setting will change when the control method is changed. (V/f control factory settings are given.)
Param-
eter
Num-
ber
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
V/f
V/f
with
PG
Open
Loop
Vec-
tor
LCD Display
C3-01
Slip compensation gain
Use this parameter to improve speed accuracy
when operating under a load. Normally, there is no
need to make this setting.
Adjust parameter C3-01 under the following con-
ditions:
• Increase the set value when the speed falls to
below the target value.
• Decrease the set value when the speed rises to
above the target value.
0.0 to 2.5 0.0* Yes A No A
Slip Comp Gain
C3-02
Slip compensation pri-
mary delay time
Set the primary delay time constant for the slip
compensation function in seconds.
Normally, there is no need to make this setting.
Adjust parameter C3-02 under the following con-
ditions:
•When the slip compensation response is low,
lower the set value.
•When the speed is unstable, increase the set
value.
0 to
10000
2000 ms
*
No A No A
Slip Comp Time
C3-03
Slip compensation limit Set the upper limit of the compensation amount
for the slip compensation function as a percent,
taking the motor rated slip amount to be 100%.
0 to
250
200% No A No A
Slip Comp Limit
C3-04
Slip compensation during
regeneration
0: Slip compensation is disabled during
regeneration.
1: Slip compensation is enabled during
regeneration.
If the slip compensation function operates during
regeneration, you might have to use the braking
option (braking resistor, Braking Resistor Unit, or
Braking Unit) to momentarily increase the regen-
erative amount.
0 or 10 NoANoA
Slip Comp Regan
C3-05
Output voltage limit opera-
tion selection
0: Disabled.
1: Enabled. (The motor flux will be lowered auto-
matically when the output voltage become sat-
urated.)
0 or 1 0 No No No A
V/F Slip Cmp Sel

Omron SYSDRIVE 3G3RV Series Specifications

General

Brand	Omron
Model	SYSDRIVE 3G3RV Series
Category	Inverter
Language	English