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If an initial parameter error (alarm 37) occurs, the alarm and the No. of the parameter set exceeding the 

setting range will appear on the NC Diagnosis screen as shown below. 

S02 Initial parameter error  

○○○○□ 

○○○○ : Error parameter No.
□            : Axis name

If an error No. larger than the servo parameter No. is displayed for the servo drive unit, the alarm is occurring 

for several related parameters. Refer to the following table, and correctly set the parameters.

The following settings are overflowing.
[1] Electronic gears
[2] Position loop gain
[3] Speed feedback

SV001, SV002 SV003, 
SV018
SV019, SV020
SV049

The absolute position parameter is valid when a high-speed se-
rial incremental detector (OSE104 or OSE105) is connected.
[1] Replace the detector to the one with absolute position speci-
fication.

SV017, SV025

No servo option is found.
[1] The closed loop (including the ball screw end)
[2] Dual feedback control function

SV025
SV017

No servo option is found.
[1] SHG control function

SV057
SV058

No servo option is found.
[1] Adaptive filtering function

SV027

Parameter error
The parameter value is outside the tolerable range.
The alarm No. is the No. of the spindle parameter where an error 
occurred.

Check the indicated spin-
dle parameter.