5-154
 
  Full-closed loop related alarm   
Error Alarm 
Number 
Error Alarm 
Description 
Alarm Clearing 
Method 
Clearing countermeasure 
AL.022 
Excessive error between 
motor and load 
Switch 
Re-set 
1.  Check if the connector falls out 
from the mechanism. 
2.  Check if internal and external 
count directions are the same; 
correct Pn349. 
3.  Check if Pn348 resolution is 
correct. 
4.  Increase the maximum of Pn347 
full-closed loop error. 
AL.026 
Full-closed Loop A/B/Z 
phase signal error 
Switch 
Re-set 
1.  Check if Full-closed loop encoder 
wire is connected to the driver. 
2.  Check if the full-closed loop 
connector is short-circuited, 
cold-welded or falls out. 
AL.039 
Full-closed loop encoder 
matching error 
Switch 
Re-set 
Encoder matching error 
Note: AL.022 (excessive pulse error between motor and load) means pulse error between motor and 
load exceeds the value set in Pn347 (Maximum full-closed loop error). The equation is as follows: 
Un14
Pn3484
Motorencoderresolution
Un50  Pn347 
 
 
5-6-14 Parameter Reset 
This Function can be used to return all parameters to Factory Default Values. When set to 1, the 
power must be restarted to reset the parameters. 
  Set as follows: 
 
Cn029 Parameter Reset 
Initial Value  Unit  Setting Range  Effective  RS-485 Address 
0  --  0 ~ 1  Power Re-set  0020H 
Setting Description:   
Setting  Description 
0 Not functioning 
1  All parameters returned to factory default value