Instruction manual

1Error list
Error no. H078n * (n indicates the axis number (1 to 8).) 1-7
H078n *
(n indicates the
axis number (1
to 8).)
Error message Servo amplifier watch dog
Cause The servo amplifier software process is not operating correctly.
Measures Turn the power OFF and ON once. When it comes back, contact to the dealer.
H079n *
(n indicates the
axis number (1
to 8).)
Error message Servo amplifier boad error
Cause An error was detected in the servo amplifier's PCB.
Measures Turn the power OFF and ON once. When it comes back, contact to the dealer.
H080n *
(n indicates the
axis number (1
to 8).)
Error message Servo amplifier clock error
Cause An error was detected in the servo amplifier's clock.
Measures Turn the power OFF and ON once. When it comes back, contact to the dealer.
H081n *
(n indicates the
axis number (1
to 8).)
Error message Servo amplifier undervotlage
Cause The PN bus voltage dropped to 200V or less. Momentary power failure may have occurred.
Measures Check the primary voltage.
H0820 *
H082n *
(n indicates the
axis number (1
to 8).)
Error message Motor ground fault
Cause A motor ground fault was detected. A connection or conductance error may have occurred in the motor
cable.
Measures Turn the power OFF and ON once. When it comes back, contact to the dealer.
H083n *
(n indicates the
axis number (1
to 8).)
Error message Servo amplifier overvoltage
Cause The PN bus voltage rose to 400V or more.
Measures Check the primary power supply voltage. Turn the power OFF and ON once.
H0840 * Error message Instantaneous power failure(SRV)
Cause A power shutdown status of 50 msec or longer has occurred.
Measures Check the power voltage. Turn the power OFF and ON once.
H0850 * Error message Power supply voltage incorrect
Cause The input power (L1, L2, L3) has an open phase, the voltage is not within the specifications, or the 100V/
200V specifications changeover setting is incorrect.
Measures Check the power connection, power state or the setting.
H0860 Error message Power supply overvoltage
Cause The voltage across the converter's L+ and L- exceeded 410V.
Measures Check the power supply connection and power supply state.
H087n *
(n indicates the
axis number (1
to 8).)
Error message Encoder thermal error
Cause The built-in thermal protector of the serial pulse encoder has been activated.
Measures Turn the controller power OFF, wait a while, and then turn ON again. When it comes back, contact to the
dealer.
H0880 *
H088n *
(n indicates the
axis number (1
to 8).)
Error message Power module overheat
Cause Overheating of the power module regenerative resistor was detected.
Measures Turn the controller power OFF, wait a while, and then turn ON again. When it comes back, contact to the
dealer.
H089n
(n indicates the
axis number (1
to 8).)
Error message Servo amplifier motor overheat
Cause The position detector's thermal protector activated.
Measures Turn the controller power OFF, wait a while, and then turn ON again. Decrease the acceleration/
deceleration time of the operation speed, for instance.
Refer to "Detailed explanation of command words"/"ACCEL (Accelerate)," "OVRD (Override)" and "SPD
(Speed)," or "Detailed explanation of Robot Status Variable"/"M_SETADL," "M_LDFACT" and "Functions
set with parameters"/"JADL (Optimum acceleration/deceleration adjustment rate)" of the Separate
Volume, "INSTRUCTION MANUAL/Detailed Explanation of Functions and Operations."
H090n *
(n indicates the
axis number (1
to 8).)
Error message Absolute position overspeed
Cause It moved 45 mm/sec or faster with the absolute position linear scale during initialization.
Measures Turn the power OFF and ON once. When it comes back, contact to the dealer.
H091n *
(n indicates the
axis number (1
to 8).)
Error message Servo amplifier overspeed
Cause A speed exceeding the motor's tolerable speed was detected.
Measures Turn the power OFF and ON once. When it comes back, contact to the dealer.
Error No. Error cause and measures