4. Modes of operation
Operate the ASC in AUTO mode (remote) or SEMI-AUTO mode (local). In AUTO mode, the system closes the ESS breaker (if there
is one) and starts ESS charging or discharging if the plant has a start signal.
To keep it simple, the following examples show one ASC controller without power management. However, the modes of operation
also apply to power management systems.
4.1 Island operation
The ESS supplies the load in island mode. The ESS can provide the grid-forming power in island mode. It can also work together
with non-grid forming sources.
Consumers
G
Other
controller(s)
Start, stop
V
V
I
ASC Storage
V
I
AUTO mode
1. Activate a start signal.
• Use a digital input or
• Use a time-dependent start command.
2. The ESS starts and the ESS breaker (optional) closes.
3. The ESS supplies the load.
4. To stop the ESS, activate a stop signal.
• Use a digital input or
• Use a time-dependent stop command.
5. The ESS breaker opens and the ESS stops.
SEMI-AUTO mode
1. Push the Start
button on the controller to start the ESS.
2. Push the Close breaker
button to close the ESS breaker.
3. To stop the ESS, push the Open breaker
button to open the breaker, and then push the Stop button.
OPERATOR'S MANUAL 4189341343A EN Page 17 of 36
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