Chapter 8 Servo Parameters
Revision January 2011 8-215
Setting value: 0x09
DO Name DO Function Description
Trigger
Method
Control
Mode
HOME
Homing completed. HOME is activated when the
servo drive has detected that the "HOME" sensor
(ORGP, digital input 0x24) has been detected.
When power to the servo drive at the first time, this
DO signal is OFF. After homing operation is
completed, thi DO signal will be ON and continue
being ON when the motor is running. It becomes OFF
until the sytem detect that a position overflow
occurs.
When using PR command to trigger homing
command, this DI signal will be OFF immediately.
After homeing operation is completed, it becomes
ON again.
Level
Triggered
PR
Setting value: 0x10
DO Name DO Function Description
Trigger
Method
Control
Mode
OLW
Output overload warning. OLW is activated when the
servo drive has detected that the motor has reached
the output overload time set by parameter P1-56.
t
OL = Permissible Time for Overload x setting value
of P1-56
When overload accumulated time (continuously
overload time) exceeds the value of tOL, the
overload warning signal will output, i.e. DO signal,
OLW will be ON. However, if the accumulated
overload time (continuous overload time) exceeds
the permissible time for overload, the overload alarm
(AL006) will occur.
For example:
If the setting value of parameter P1-56 (Output
Overload Warning Time) is 60%, when the permissible
time for overload exceeds 8 seconds at 200% rated
output, the overload fault (AL006) will be detected
and shown on the LED display.
At this time,
t
OL = 8 x 60% = 4.8 seconds
Result:
When the drive output is at 200% rated output and
the drive is continuously overloaded for 4.8 seconds,
the overload warning signal will be ON (DO code is
0x10, i.e. DO signal OLW will be activated). If the
drive is continuously overloaded for 8 seconds, the
overload alarm will be detected and shown on the
LED display (AL006). Then, Servo Fault signal will be
ON (DO signal ALRM will be activated).
Level
Triggered
PR
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