YASKAWA CIMR-MC5A20P4 Instruction Manual page 142

Advanced Operation
7.1.1 Torque Limit Function
7
Limiting Torque with Analog Inputs: H3-05, H3-09
J
The following two analog inputs that can be used to limit torque.
Multi-function analog input, terminal 16
Frequency reference (current), terminal 14
Use either or both of these inputs as needed with constants H3-05 and H3-09.
User User
Constant
Number
Multi-function analog
H3-05
input (terminal 16)
Multi-function analog
H3-09
input (terminal 14)
Settings
D
Setting
10 Forward Torque Limit
11 Reverse Torque Limit
12 Regenerative Torque Limit
15
Forward/Reverse Torque Limit
The above table shows only those settings related to the torque limit function.
D
Set the analog input terminal's signal level, gain, and bias to match the actual input signal.
D
The factory settings for the input terminal's signal level are as follows:
D
Terminal 16:
Terminal 14:
Figure 7.2 shows the relationship between the output torque and each torque limit.
Regenerative torque limit
Reverse
Reverse torque limit
Fig
7.2 Limiting Torque with Analog Inputs
When the forward torque limit has been set, the analog input signal acts as the limit value for torque
D
generated in the forward direction. The torque limit input is effective when torque is generated in the
forward direction even if the motor is operating in reverse (regenerative torque).
The torque limit is 100% of the motor's rated torque when the analog input is at its maximum value
D
(10 V or 20 mA). To increase the torque limit above 100%, set the input terminal's gain above 100%.
For example, a gain of 150.0% would result in a torque limit of 150% of the motor's rated torque with
a 10 V or 20 mA analog input.
Gain for multi-function analog input, terminal 16: H3-06
Gain for frequency reference (current), terminal 14: H3-10
Change
during during Setting Setting
Name
Range
Opera-
tion
0 to 1F
1 to 1F
0 to 10 V (A 10 V input limits the torque to 100% of the motor's rated torque.)
4 to 20 mA (A 20 mA input limits the torque to 100% of the motor's rated torque.)
Output torque
Forward direction
Reverse direction
- 4
Valid Access Levels
Factory Factory
Unit
Open Loop
Setting
Vector
- - 0 B
A
- - 1F
Function
Forward torque limit
Motor speed
Forward
Regenerative torque limit
Flux Vector
B
A