YASKAWA CIMR-ACA4011 - Page 202

Machine Protection
6-41
Multi-Function Analog Input (H3-05, 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).
Setting the Torque Limit in Parameters
Set individually four torque limits using L7-01 to L7-04 in the following directions: forward drive, reverse
drive, forward regeneration, and reverse regeneration.
Set the Torque Limit Value Using an Analog Input
Change the analog input level torque limit value by setting the torque limit in multi-function analog input ter-
minals A2 and A3.
The analog input terminal signal levels are set up as shown when shipped from the factory:
Multi-function analog input terminal A2: 4 to 20 mA
Multi-function analog input terminal A3: 0 to 10
The following diagram shows the relationship between the torque limits.
Fig 6.35 Torque Limit by Analog Input
Set
Value
Function Contents (100%)
Control Methods
V/f
Open
Loop
Vector
Flux
Vector
10 Positive torque limit Motor's rated torque No Yes Yes
11 Negative torque limit Motor's rated torque No Yes Yes
12 Regenerative torque limit Motor's rated torque No Yes Yes
15 Positive/negative torque limit Motor's rated torque No Yes Yes
Negative
Reverse operation
Regenerative torque limit
Regenerative torque limit
Forward torque limit
Positive/negative torque limits
Positive/negative torque limits
No. of motor rotations
Forward operation
Negative torque limit
Positive
Output torque