Fuji Electric ALPHA5 Smart, Руководство пользователя

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CHAPTER 7 MAINTENANCE AND INSPECTION
Troubleshooting Method
7-13
7
18. Deviation Overflow
[Display] [Description of detected alarm]
[Cause and remedy]
Cause Remedy
Wrong connection of power cables
(The alarm is alerted immediately when
servo-on is turned on.)
Check and correct the wiring of power cables (U, V
and W).
The servomotor fails to rotate mechanically. Check if the brake is applied.
Low output torque Increase PA1_27, _28 (torque limit).
The deviation detection width is small. Increase PA2_69 (deviation detection overflow
value).
The amplifier is in the P control mode. Turn off the P motion signal.
Low gain Perform gain adjustment.
Acceleration/deceleration of pulse frequency
is too acute.
Increase the acceleration/deceleration time.
The default setting of PA2_69 (deviation detection overflow value) is 15 rev, that is, 20 bits x 15
pulses. During regular servo system operation, the deviation amount increases in proportion to the
rotation speed.
19. Amplifier Overheat
[Display] [Description of detected alarm]
[Cause and remedy]
Cause Remedy
Reduce the ambient temperature to 55°C or lower. (40°C
or lower temperatures are recommended for regular
operation.)
The ambient temperature exceeds
55°C.
Move heat generating bodies near the servo amplifier as
far away as possible.
Effective torque may be exceeding 100 ％ during operation.
Check the effective torque using the keypad or PC loader so that it may not exceed
100%.
A position deviation amount equivalent to servomotor
revolutions specified in PA2_69 (deviation detection
overflow
value) is accumulated inside the servo amplifier.
The temperature of the servo amplifier has exceeded the
allowable limit.
oF
AH