The rate of power increase when first ramping (Start Ramp) and subsequent increases in offsetting or selling (Normal Ramp)
When the inverter starts, or tripped due to ride-through timeout, or anti-islanding taking effect, the power will rise or ramp down in accordance with SS setpoint when the inverter start, or reconnect after the utility returns to service.
When the inverter is operating normally, when the power setpoint changes, the power will change in accordance with RR setpoint.