12 Troubleshooting and Maintenance
12-26
G5-series AC Servomotors and Servo Drives User’s Manual (with Built-in EtherCAT Communications)
z Error No. 99.0
Error No. 99.0 may occur due to the timing between safety input 1/2 and error clear input.
This error will occur if both of the following conditions are met:
• An error was cleared when at least one of the input photocouplers for safety inputs 1 and 2 was
OFF (which means that a Safety Input Error (Error No. 30.0) had occurred).
• At least one of the input photocouplers for safety inputs 1 and 2 was turned from OFF to ON in a
specific period during the error clear process (See below).
*1 Error No. 99.0 will occur if at least one of the input photocouplers for safety inputs 1 and 2 is turned from OFF
to ON.
Precautions for Correct UsePrecautions for Correct Use
Be sure to clear the error after turning ON the photocouplers for safety inputs 1 and 2 again.
Safety input 1
Safety input 2
Error reset
input (RESET)
Specified period
Approx. 1 ms
*1
Approx. 120 ms
Error
Error No. 30.0
occurred
Error No. 99.0
occurred
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