MEMORY ERROR (SYMON SIGNAL FILE) indicates data error or main CPU board failure. The manual's first action is: “(1)Reset the alarm. (2)If the alarm occurs again, initialize the servo monitor signal file in maintenance mode, and then load the servo monitor signal file saved in the external memory device.”
- Model
- Yaskawa FS100
- Display shows
- MEMORY ERROR (SYMON SIGNAL FILE) (4002)
- Type
- Alarm code
- Source
- Manual p. 154
What 4002 means
MEMORY ERROR (SYMON SIGNAL FILE) p. 154
Common causes
What to do
- (1)Reset the alarm. (2)If the alarm occurs again, initialize the servo monitor signal file in maintenance mode, and then load the servo monitor signal file saved in the external memory device. p. 154
- (1)Reset the alarm. (2)If the alarm occurs again, replace controller. Save the CMOS.BIN before replace controller to be safe. p. 154
If 4002 is still not resolved
The manual gives no further instruction for this code. Open the code table in the PDF or contact Yaskawa service.
This page summarises what the manufacturer’s manual says about 4002; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Yaskawa. Found a mistake? Report an error.