1Error list
Error no. H1470 *
1-20
H1470 * Error message Frequency error
Cause AC frequency is out of range.
Measures Check the AC power line frequency. If it comes back, contact your service provider.
H148n *
(n indicates the
axis number (1
to 8).)
Error message Power supply parameter error
Cause Illegal at the power supply parameter
Measures Turn the power OFF and ON once. If it comes back, contact your service provider.
H1490 * Error message Power supply Power module overheat.
Cause The temperature protection function of the power module operated.
Measures Clean up or replaces the air filters. When it comes back, contact to the dealer.
H1491 Error message Illegal converter thermal servo AMP.
Cause Overheating of servo AMP converter.
Measures Turn the power OFF, wait a while, and then turn ON again.
H1492 * Error message Power supply converter overheat
Cause Overheating of the converter was detected
Measures Turn the power OFF, wait a while, and then turn ON again
H1493 * Error message Rush resistance overheat
Cause Overheating of the rush resistance was detected
Measures Turn the power OFF, wait a while, and then turn ON again
H1494 * Error message Discharge resistance overheat
Cause Overheating of the discharge resistance was detected
Measures Turn the power OFF, wait a while, and then turn ON again
H150n *
(n indicates the
axis number (1
to 8).)
Error message Motor combination error
Cause The servo motor which does not correspond to addition axis servo amplifier is connected.
Measures Confirm the specifications of servo amplifier and the motor.
H151n *
(n indicates the
axis number (1
to 8).)
Error message SRV-AMP USB comm. error
Cause A communication error was detected between the servo amp and PC
Measures Check the communication cable connection and conductivity
H152n *
(n indicates the
axis number (1
to 8).)
Error message Servo motor output watt over
Cause The output wattage of the servo motor exceeded ratings
Measures Lower the rotation speed of the servo motor
H154n *
(n indicates the
axis number (1
to 8).)
Error message Communication error between units
Cause The transmission data between servo amplifier units is illegal
Measures Check the communication cable connection and conductivity
H1550 * Error message Emergency stop is a breakdown
Cause The external emergency stop input is illegal
Measures Turn the power OFF and ON once. When it comes back, contact to the dealer.
H156n
(n indicates the
axis number (1
to 8).)
Error message Excessive error 4
Cause The axis moved while executing servo ON processing.
Measures If it comes back, contact your service provider.
H157n
(n indicates the
axis number (1
to 8).)
Error message Non-registered servo error. (This error may be caused by the error on the amplifier for additional axis.)
Cause A non-registered servo alarm occurred.
Measures Confirms the code by LED of servo additional axis amplifier, and refer to the instruction manual of servo
amplifier.
If the alarm cannot be reset, turn the power OFF and ON. If it comes back, contact your service provider.
C158n
(n indicates the
axis number (1
to 8).)
Error message Non-registered servo warning. (This caution may be caused by the warning on the amplifier for additional
axis.)
Cause A non-registered servo warning occurred.
Measures Confirms the code by LED of servo additional axis amplifier, and refer to the instruction manual of servo
amplifier. If the alarm cannot be reset, turn the power OFF and ON. If it comes back, contact your service
provider.
Error No. Error cause and measures
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