YASKAWA SGMJV User Manual page 124

(1) Execution Method
This function can be executed either with the host controller or independently with the SERVOPACK.
Execution with Host Controller
The host controller limits the torque in response to a low-voltage warning.
The limited torque is reset when the low-voltage warning is cleared.
Main circuit
input supply
Main circuit
bus voltage
SERVOPACK
Low-voltage
warning detected
Torque limit
Low-voltage
warning
Host
Torque limit
controller
reference
Execution Independently with SERVOPACK
The torque is limited in the SERVOPACK in response to a low-voltage warning.
The SERVOPACK limits the torque in the set time when the low-voltage warning is cleared. Pn008.1 is used
to specify whether the function is executed with the host controller or independently with the SERVOPACK.
Main circuit
input supply
Main circuit
bus voltage
SERVOPACK
Low-voltage
warning detected
Torque limit
*1 560 V for 400 V power supply.
*2 400 V for 400 V power supply.
Main circuit power interruption time
*1
280 V
*2
200 V
0%
Value for Pn424
0%
*1 560 V for 400 V power supply.
*2 400 V for 400 V power supply.
Main circuit power interruption time
*1
280 V
*2
200 V
Torque limit starts.
Setting value for Pn424
0%
The bus voltage drops slowly because
output torque is limited.
Torque limit starts.
The torque is limited in
response to a low-
voltage warning.
Torque limit ends.
Value for Pn425
The bus voltage drops slowly because
output torque is limited.
5.2 Setting Common Basic Functions
Main circuit bus voltage
increases by recovery
of the main circuit power.
Main circuit bus voltage
increases by recovery
of the main circuit power.
Setting value for Pn425
5
5-17