8. TROUBLESHOOTING 
8 -  6 
 
8.3 Warning list 
  No. Name 
Detail 
No. 
Detail name 
Stop 
method 
(Note 2, 
3) 
 
 
Warning 
    90.1  Home position return incomplete     
90 
Home position return 
incomplete warning 
90.2 
Home position return abnormal 
termination 
 
 90.5 Z-phase unpassed     
 
91 
Servo amplifier 
overheat warning  
(Note 1) 
91.1 
Main circuit device overheat 
warning 
 
 
92 
Battery cable 
disconnection warning 
92.1 
Encoder battery cable 
disconnection warning 
 
 92.3 Battery degradation   
 
96 
Home position setting 
warning 
96.1 
In-position warning at home 
positioning 
 
 96.2 
Command input warning at home 
positioning 
 
 96.3 
Servo off warning at home 
positioning 
 
 97 
Positioning 
specification warning 
97.1 
Program operation disabled 
warning 
 
 
98  Software limit warning 
98.1 
Forward rotation-side software 
stroke limit reached 
 
 98.2 
Reverse rotation-side software 
stroke limit reached 
 
 
99  Stroke limit warning 
99.1  Forward rotation stroke end off  (Note 4)   
  99.2  Reverse rotation stroke end off  (Note 4)   
 
9B 
Error excessive 
warning 
9B.1  Excess droop pulse 1 warning     
  9B.3  Excess droop pulse 2 warning     
 9B.4 
Error excessive warning during 0 
torque limit 
 
  9F  Battery warning  9F.1  Low battery     
 
E0 
Excessive regeneration 
warning 
E0.1  Excessive regeneration warning     
 
E1  Overload warning 1 
E1.1 
Thermal overload warning 1 during 
operation 
 
 E1.2 
Thermal overload warning 2 during 
operation 
 
 E1.3 
Thermal overload warning 3 during 
operation 
 
 E1.4 
Thermal overload warning 4 during 
operation 
 
 E1.5 
Thermal overload warning 1 during 
a stop 
 
 E1.6 
Thermal overload warning 2 during 
a stop 
 
 E1.7 
Thermal overload warning 3 during 
a stop 
 
 E1.8 
Thermal overload warning 4 during 
a stop 
 
 
E3 
Absolute position 
counter warning 
E3.1 
Multi-revolution counter travel 
distance excess warning 
 
  E3.2  Absolute position counter warning     
 E3.4 
Absolute positioning counter EEP-
ROM writing frequency warning 
 
 E3.5 
Encoder absolute positioning 
counter warning 
 
 E4  Parameter warning  E4.1 
Parameter setting range error 
warning 
 
 
 E6 
Servo forced stop 
warning 
E6.1  Forced stop warning  SD   
 E7 
Controller forced stop 
warning 
E7.1  Controller forced stop input warning  SD 
 
 E8 
Cooling fan speed 
reduction warning 
E8.1 
Decreased cooling fan speed 
warning