Omron SYSDRIVE 3G3RV Series User Manual

6
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40
Machine Protection
This section explains functions for protecting the machine.
K
KK
K Limiting Motor Torque (Torque Limit Function)
The motor torque limit function is enabled only in open-loop vector control. The output torque to the motor is
calculated internally in open loop vector control. The Torque Limit Function limits this internal torque value
to output within a user set value.
This function is used when a load can handle only limited torque, or when limiting the regeneration amount.
nRelated Parameters
Multi-function Analog Input (H3-09)
Note The forward torque limit is the limit value when the analog input signal generates forward torque. This torque limit setting is enabled even when the
analog input signal generates forward torque while the motor is operating (regeneration).
nSetting the Torque Limit in Parameters
Using L7-01 to L7-04, you can set individually four torque limits in the following directions: Forward drive,
reverse drive, forward regeneration, and reverse regeneration.
nSet the Torque Limit Value Using an Analog Input
You can change the analog input level torque limit value by setting the torque limit in multi-function analog
input terminal A2.
The analog input terminal signal level is factory-set as follows:
Multi-function analog input terminal A2: 4 to 20 mA (20 mA at input, torque limited to 100% motor rated
torque). The following diagram shows the relationship between the torque limits.
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
L7-01
Forward drive torque limit
Set the torque limit value as a percent of the motor
rated torque.
Yo u can set up to four separate limits.
0 to 300 200% No No No A
Tor q Limit Fwd
L7-02
Reverse drive torque limit
0 to 300 200% No No No A
Tor q Limit Rev
L7-03
Forward regenerative
torque limit
0 to 300 200% No No No A
Tor q Lmt Fwd Rgn
L7-04
Reverse regenerative
torque limit
0 to 300 200% No No No A
Tor q Lmt Rev Rgn
Set
Value
Function 100% of Contents
Control Methods
V/f
V/f
with
PG
Open
Loop
Vec-
tor
10 Positive torque limit Motor rated torque No No Yes
11 Negative torque limit Motor rated torque No No Yes
12 Regenerative torque limit Motor rated torque No No Yes
15 Positive/negative torque limit Motor rated torque No No Yes
Output torque
Positive torque
Regenera-
tive status
Regenera-
tive status
No. of motor
rotationsReverse
Negative torque
Forward

Omron SYSDRIVE 3G3RV Series Specifications

General

Brand	Omron
Model	SYSDRIVE 3G3RV Series
Category	Inverter
Language	English