NSK EDD Megatorque Motor - Over Travel Limit; Warning

11. Alarm and Warning
— 11-7 —
11.2.2.2. Warning
 Reports an occurrence of abnormality that can be easily rectified.
 When a warning is given the output WRN (Warning) closes if the shipping set of the output
logic is set to negative. The condition of the Motor depends on the type of warning. For a
warning that deactivates the Motor servo, the dynamic brake functions to stop the Motor.
 A warning can be cleared by the input ACLR (alarm clear) or the command CL (Alarm clear)
after remedying the cause.
Table 11-6: Warning
7-seg.
LED
Readout of the
Command TA
(Tell alarm)
Description
Motor
condition
Output
DRDY
Output
WRN
Output
OTPA
OTMA
Alarm
history
Clear
A3
A3>Over Load
Software thermal
over
Servo-off
–
Open
–


A5
A5>Origin
Undefined
Hone position
undefined
Does not
change
–
Open
–


C0
C0>Pulse
Command/Feedback
Error
Error in the
commanded
position or the
feedback signal.
Servo-off
–
Open
–


F1
F1>Excess
Position Error
Excess position
error
Servo-off
–
Open
–


F5
F5>Program Error
Program error
Cycle stop*1
–
Open
–


F8
F8>AT Error
Automatic tuning
error
Cycle stop*1
–
Open
–


P5
P5>Main AC Line
Under Voltage
Low voltage of
main power
Servo-off
–
Open
–


*1: When the warning F5 (Program error) or the warning F8 (Auto tuning error) is given in the middle of
Motor operation, the Motor stops after the completion of current operation.
11.2.2.3. Over Travel Limit
 Reports the condition on both software and hardware over travel limit.
 If the shipping set of the port polarity is set to negative logic, the output OTPA or the output
OTPM closes when one of them is activated by the Motor. After this moment, the System
accepts only the command to move out the off limits area.
 The alarm will be cleared when the Motor gets out of the off limits area.
Table 11-7: Over travel limit
7-seg.
LED
Readout of the Command
TA
(Tell alarm)
Name
Motor
condition
Output
DRDY
Output
WRN
Output
OTPA
OTMA
Alarm
history
Clear*
1
F2
F2>Software Over
Travel
Software over
travel limit
Only accepts
the command
for moving out
of the limit
–
–
Open
–

F3
F3>Hardware Over
Travel
Hardware over
travel limit
–
–
Open
–

*1: The warning can be cleared when the Motor gets out the area by a positioning command,
Jogging command or manual rotation of the Motor of which servo is deactivated.