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Chapter 7 Servo Parameters|ASDA-AB Series
7-94
Revision January 2009
Sign
Setting
Value
Digital Output Function Description
OLW 10
Output overload warning. OLW is activated when the servo drive has detected that the
motor has reached the output overload level 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
t
OL, the overload warning signal will output, i.e. DO signal, OLW will be ON. However,
if the overload accumulated time (continuously overload time) exceeds the permissible
time for overload, the overload alarm (ALE06) will output.
For example:
If the setting value of parameter P1-56 (Output Overload Warning Level) is 60%, when
the permissible time for overload exceeds 8 seconds at 200% rated output, the
overload fault (ALE06) 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, and the overload warning signal will be ON (DO code is
10, 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 (ALE06).
Then, Servo Fault signal will be ON (DO signal ALRM will be activated).
WARN 11
Servo warning activated. WARN is activated when the drive has detected Reverse
limit error. Forward limit error, Emergency stop, Serial communication error, and
Undervoltage these fault conditions.
CMDOK 12
Internal position command completed. CMDOK is activated when the servo drive has
detected that the internal position command has been completed or stopped after the
delay time which is set by the parameter P1-62 has elapsed.
NOTE
1) When P2-18 to P2-22 is set to 0, it indicates output function is disabled.