YASKAWA E-V Series User Manual page 116

(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 force in response to a low-voltage warning.
The limited force is reset when the low-voltage warning is cleared.
Power supply for
main circuit
Bus voltage
for main
circuit
SERVOPACK
Low-voltage
warning is detected
Force limit
Low-voltage
warning status
Host
controller
Force limit
reference
∗1. 560 V for 400 V power supply.
∗2. 400 V for 400 V power supply.
Execution Independently with SERVOPACK
The force is limited in the SERVOPACK in response to a low-voltage warning.
The SERVOPACK resets the limited force 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 SERVO-
PACK.
Power supply for
main circuit
Bus voltage for
main circuit
SERVOPACK
Low-voltage
warning is detected
Force limit
∗1. 560 V for 400 V power supply.
∗2. 400 V for 400 V power supply.
Interruption time for the power
supply of the main circuit
The bus voltage for the main circuit is
1
280 V*
lowered slowly, because the output force
2
200 V*
is limited.
165 V
0%
The force is limited in
response to a
low-voltage warning.
0%
*1
280 V
*2
200 V
165 V
The force limit
is started.
Setting value
of Pn424
0%
The force limit is started.
The force is limited in response
to a low-voltage warning
The low-voltage warning is cleared
and force limit is stopped.
Interruption time for the power
supply of the main circuit
The bus voltage for the main circuit is
lowered slowly, because the output force
is limited.
5.2 Setting Common Basic Functions
The bus voltage for the main
circuit increases after the
power supply is restored.
The bus voltage for the main
circuit increases after the
power supply is restored.
Setting value of Pn425
5
5-13