Emergency stop triggered

An emergency stop puts the inverter into a stopped state. The DC load switches and AC circuit breakers open, and the inverter units disconnect from the grid. The usual cause is that someone pressed an emergency stop button. The CPS manual also lists an internal inverter fault as a possible cause. Check every emergency stop button first, on the cabinet, in the stations and any external switches. If one is pressed, release it. Some buttons stay locked and need a key to release. On Sunny Central units, the emergency switch relay has two signal lights that stay lit in normal operation and switch off when the stop is activated. In a team configuration the relay has to switch in every cabinet. To restart, release the button, switch the DC load switches back on, acknowledge the error where needed, and follow the normal start process. If the stop keeps coming back after the button has been released, contact the manufacturer's service center, because an internal fault may be the cause.

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• sentence 2: support check: partial - Both causes are listed, but 'usual cause' ordering/frequency is not stated, only that button pressed is listed first.
• sentence 3: support check: partial - Check/restore button and key-release lock are stated, but checking cabinet, stations and external switches comes from a functional-test passage, and 'first' is only loosely implied.
• sentence 6: support check: partial - The manual says contact service if the problem persists and lists internal fault as a cause, but recurrence after release is only implied. -->