Omron XTRADRIVE User Manual

XtraDrive User Manual Chapter 5: Parameter Settings and Functions
5-71
5.5.8. Handling Power Loss
The following parameter is used to specify whether to generate an alarm
when power loss occurs.
Parameter Signal Setting (ms) Description
Pn509 Momentary Hold Time
Setting Range: 20 to 1000
Default Setting: 20
Speed/Torque
Control,
Position Control
The servo amplifier turns the servomotor OFF if it detects a voltage
drop in the power supply. The default setting of 20ms means that
servomotor operation will continue if power is lost for less than 20ms.
In the following instances, however, either a servo alarm is generated or
control is lost (equivalent to normal power OFF operation) regardless of
the parameter setting.
• When an insufficient voltage alarm (A.41) occurs during power loss
with a large servomotor load.
• Loss of the control power supply is equivalent to normal power
OFF operation, thus control is lost.
In power loss detection, the status of the main circuit power supply is
detected and OFF status is ignored so that the servomotor’s operation
will continue if motor power turns back ON within the time set at user
constant Pn509.
Time
Power supply
voltage
t OFF
Power loss
1
. Pn509 setting t > t OFF
2
. Pn509 setting t < t OFF
For
1
.
For
2
.
Servo ON
Servo ON
Servo OFF
5
Settings and Functions

Omron XTRADRIVE Specifications

General

Brand	Omron
Model	XTRADRIVE
Category	Computer Hardware
Language	English