– This function handles momentary power interruptions for the voltage
and time ranges stipulated in SEMI F47. An uninterruptible power
supply (UPS) is required as a backup for momentary power interrup-
tions that exceed these voltage and time ranges.
– Set the host controller or SERVOPACK torque limit so that a torque
reference that exceeds the specified acceleration torque will not be
output when the power supply for the main circuit is restored.
– For a vertical axis, do not limit the torque to a value that is lower than
the holding torque.
– This function limits torque within the range of the SERVOPACK’s
capability for power interruptions. It is not intended for use under all
load and operating conditions. Set the parameters while monitoring
operation on the actual machine.
– You can set the momentary power interruption hold time to increase
the amount of time from when the power supply is turned OFF until
power supply to the motor is stopped. To stop the power supply to the
motor immediately, use the Servo OFF command (Disable Operation
command).
7.5 Setting the Motor Maximum Speed
You can set the maximum speed of the Servomotor with the following parameter.
n Rotary Servomotors
Maximum Motor Speed
Setting
Range
Setting Unit Default Set-
ting
When Ena-
bled
Classifica-
tion
Pn316 0 to 65,535
1 min
-1
10,000 After restart Setup
(applies to Speed Control, Position Control and Torque Control)
n Linear Servomotors
Maximum Motor Speed
Setting
Range
Setting Unit Default Set-
ting
When Ena-
bled
Classifica-
tion
Pn385 1 to 100 100 mm/s 50 After restart Setup
(applies to Speed Control, Position Control and Force Control)
You can achieve the following by lowering the maximum speed of the Servomotor.
n If the Servomotor speed exceeds the setting, an A.510 alarm (Overspeed) will occur.
n With a Linear Servomotor, you can increase the upper limit for the setting of Pn281
(Encoder Output Resolution). Refer to the following section for details.
Ä
Chap. 7.6 ‘Encoder Divided Pulse Output’ page 213
Changing the setting of the parameter is effective in the following cases.
Sigma-7 Series SERVOPACKs
Application Functions
Setting the Motor Maximum Speed
| | PROFINET Communications - SIEP YEUOC7P 02A Revision 0 | en | 212
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