3-7
3-1 Servo Drive Specifications
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
3
Specifications
Protective Functions
Error detected Description
Control power supply undervoltage The DC voltage of the control power supply fell below the specified value.
Overvoltage The DC voltage of the main circuit exceeded the specified value.
Main power supply undervoltage The DC voltage of the main circuit is low.
Overcurrent Overcurrent flowed to the IGBT. Motor power line ground fault or short
circuit.
Servo Drive overheat The temperature of the drive radiator exceeded the specified value.
Overload Operation was performed with torque significantly exceeding the rating for
several seconds to several tens of seconds.
Regeneration overload The regenerative energy exceeded the regeneration absorption capacity of
the Regeneration Resistor.
Encoder communications error The encoder wiring is disconnected.
Encoder communications data error Communications cannot be performed between the encoder and the drive.
Error counter overflow The number of accumulated pulses in the error counter exceeded the set
value for the Error Counter Overflow Level (Pn014).
Excessive hybrid error During fully-closed control, difference between position of load from
external encoder and position of motor due to encoder was larger than the
number of pulses set by Internal/External Feedback Pulse Error Counter
Overflow Level (Pn328).
Overspeed The motor rotation speed exceeded the maximum number of rotations.
Electronic gear setting error The set value for the Electronic Gear Ratio (Pn009 to Pn010, Pn500 to
Pn503) is not appropriate.
Error counter overflow
Error counter value based on the encoder pulse reference exceeded 2
29
(536870912).
Interface I/O setting error An error was detected in the interface I/O signal.
Overrun limit error The motor exceeded the allowable operating range set in the Overrun Limit
Setting (Pn514) with respect to the position command input.
Parameter error Data in the Parameter Save area was corrupted when the power supply
was turned ON and data was read from the EEPROM.
Parameters destruction The checksum for the data read from the EEPROM when the power supply
was turned ON does not match.
Drive prohibition input error The forward drive prohibition and reverse drive prohibition inputs are both
turned OFF.
Excessive analog input A current exceeding the Excessive Analog Input (Pn424, Pn427 or Pn430)
was applied to the analog command input (pin 14).
Absolute encoder system down error The voltage supplied to the absolute encoder is lower than the specified
value.
Absolute encoder counter overflow error The multi-rotation counter of the absolute encoder exceeds the specified
value.
Absolute encoder overspeed error The motor rotation speed exceeds the specified value when only the battery
power supply of the absolute encoder is used.
Absolute encoder 1-rotation counter
error
A 1-turn counter error was detected.
Absolute encoder multi-rotation counter
error
A multi-rotation counter error or phase-AB signal error was detected.
ABS
ABS
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