Yaskawa Sigma-5 User Manual: Design and Maintenance - Linear Motors - Manual (Page 116)

4 Operation
4.2.11 SEMI-F47 Function (Force Limit Function for Low Power Supply Voltage for Main Circuit)
4-26
(1) Execution Method
This function can be executed either with the host controller or independently with the SERVOPACK.
Use Pn008.1 to select whether or not the force limit function is executed with the host controller or indepen-
dently with the SERVOPACK.
„ Execution with Host Controller (Pn008 = n.††1†)
The host controller limits the force in response to a low-voltage warning.
The force is no longer limited when the low-voltage warning is cleared.
„ Execution Independently with SERVOPACK (Pn008 = n.††2†)
The force is limited in the SERVOPACK in response to a low-voltage warning.
The SERVOPACK stops limiting the force in the set time (Pn425) when the low-voltage warning is cleared.
Main circuit power interruption time
Main circuit
input supply
Main circuit
bus voltage
Low-voltage
warning detected
Force limit
reference
280 V
*1
200 V
*2
Low-voltage
warning
Force limit
SERVOPACK
Host
controller
Force limit starts.
0%
0%
Force limit ends.
Main circuit bus voltage
increases by recovery
of the main circuit power.
The bus voltage drops slowly because
output force is limited.
The force is limited in
response to a low-
voltage warning.
*1: 560 V for 400 V power supply.
*2: 400 V for 400 V power supply.
280 V
*1
200 V
*2
0%
Main circuit power interruption time
Main circuit
input supply
Main circuit
bus voltage
Low-voltage
warning detected
Force limit starts.
Setting value for Pn424
Setting value for Pn425
Force limit
SERVOPACK
Main circuit bus voltage
increases by recovery
of the main circuit power.
The bus voltage drops slowly because
output force is limited.
*1: 560 V for 400 V power supply.
*2: 400 V for 400 V power supply.