SRVO-022: SRDY on
The opposite oddity of SRVO-021: the amplifier reported ready before it was told to power up - SRDY was already on when the controller went to close the contactor.
What it means
The opposite oddity of SRVO-021: the amplifier reported ready before it was told to power up - SRDY was already on when the controller went to close the contactor. Points at the amplifier or the servo control hardware saying something untrue.
Common causes
Ranked by what technicians most often find, most likely first.
- Faulty servo amplifier (stuck or welded contactor state reporting).
- Faulty servo card / axis control module or auxiliary axis board.
How to fix it
- Replace the servo amplifier for the named group/axis.
- If unchanged, replace the servo card module or auxiliary axis board. This is a hardware-swap diagnosis - there's no configuration fix for a signal that reports true when it shouldn't.
Quick facts
- Category
- Servo
- Affected series
- R-30iB; R-30iB Mate; R-30iB Plus; R-30iB Mate Plus
- Alarm family
- SRVO