User manual

19 References
−184−
19.7 Warning/alarm lists

Alarms (protective functions)
Item Overview/condition
Alarm check
function
LED indicator When an alarm generates, the ALARM LED on the front face of the
driver will blink. The number of times the LED blinks varies depending
on the content of the alarm.
ALM output ALM output This signal will be output when an alarm generates.
Alarm code output (AL0 to
AL2 output)
This alarm is used to allow the programmable controller to detect the
content of each alarm that has generated.
Alarm code output
Alarm code output
enable/disable setting
Enable alarm code output if you want alarm codes to be output.
Power cycle/reconnection Cycle the power to reset alarms. Alarm reset
ALM-RST input Input the ALM-RST signal to reset alarms.
Alarm detection
condition setting
Excessive position
deviation alarm
Set the condition under which an excessive position deviation alarm
generates, as an amount of rotation of the motor shaft.
Overheat protection The internal temperature of the driver exceeded approx. 85 °C (185 °F).
Motor overheat generation The motor temperature reached approx. 85 °C (185 °F).
Overload A load exceeding the rated torque was applied.
Overspeed The detected motor speed exceeded 6000 r/min.
Command pulse error The command pulse frequency exceeded the specified value.
Regeneration unit overheat • The regeneration unit is not connected correctly.
• The re
g
eneration unit is overheatin
g
.
Overvoltage protection • 200-230 VAC was applied to a product specified for 100-150 VAC.
• A large inertial load was stopped abruptly, or up/down operation was
performed without connecting a regeneration unit.
• The regeneration unit is not connected correctly.
• The DC voltage of the main power supply became approx. 400 V or
hi
g
her.
Main power supply error The motor was started when the main power was cut off.
Undervoltage The main power was cut off momentarily or the voltage became low.
Excessive position
deviation
• The deviation between the command position and actual position at the
motor output shaft exceeded the value set in the excessive position
deviation alarm parameter [APP-3-00]. (Initial value: 10 rev)
• The load is large or the acceleration/deceleration time is short.
Overcurrent protection The motor, cable or driver output circuit was shorted.
Position range error • The command position exceeded the coordinate control range
(−2,147,483,648 to 2,147,483,647).
• The multi-rotation data for internal encoder coordinates exceeded the
coordinate control range (−32,768 to 32,767).(This alarm generates
when the absolute system function is used in the position control
mode.)
Absolute position loss • The power was turned on for the first time after connecting the battery.
• No battery is connected, the battery cable is disconnected, or the
battery has been consumed.
• The encoder cable came off.
• The position range error alarm was reset.
(This alarm generates when the absolute system function is used in the
p
osition control mode.
)
ABS not supported The battery was detected when the absolute function was disabled in the
position control mode.
Descriptions of
alarms
No battery No battery was detected or the battery cable was disconnected when the
absolute function was enabled.