Fanuc Series 15i 150i
Fanuc Alarm SV027 (INVALID DIGITAL SERVO PARAMETER)
Fanuc Alarm SV027 ILL DGTL SERVO PARAMETER
The settings made for the digital servo parameters are illegal. There is an error in the settings made for the digital servo parameters.
Cause
(1) Check the settings made for the following parameters:
Parameter No. 1874: Motor type number
Parameter No. 1879: Direction of motor rotation
Parameter No. 1876: Number of feedrate feedback pulses
Parameter No. 1891: Number of position feedback pulses
Parameter No. 1023: Servo axis number
Parameter No. 1977: Flexible feed gear ratio
Parameter No. 1978: Flexible feed gear ratio
(2)To ensure safety, change the setting of the following parameter to 0:
Parameter No. 1859: Parameter for observer
(3) Initialize digital servo parameters.
See Series 15i/150i―Model A Maintenance Manual (GFZ-63325EN/03) Section 5.1, “Initializing Servo Parameters.”
