Deactivating Secure Power Supply Operation - SMA SUNNY BOY 3.8-US User Manual

SMA Solar Technology America LLC
Do not connect loads that require a stable electricity supply to the outlet for secure
power supply operation
Secure power supply operation must not be used for loads that require a stable electricity
supply. The power available during secure power supply operation depends on the solar
irradiation on the PV system. Therefore, power output can fluctuate considerably depending
on the weather or may not be available at all.
• Do not connect loads to the outlet for secure power supply operation if they are
dependent on a stable electricity supply for reliable operation.
Procedure:
1. If no load is connected to the outlet, connect a load.
2. Turn the switch of the outlet to secure power supply operation.
3. Wait one minute.
☑ The inverter commences secure power supply operation. As soon as the inverter supplies the
outlet with power, the green LED flashes (1.5 s on and 0.5 s off) and the message SPS-mode
active is shown in the display along with the amount of power being supplied from the
inverter to the outlet. In addition, the control light of the outlet for secure power supply
operation glows.
✖ The green LED does not flash and no message that the secure power supply operation mode is
activated appears on the display or the control lamp of the outlet does not glow?
The output power of the PV system is too low. Irradiation on the PV system is probably too low
or the connected load requires more power than currently available.
• Ensure that the outlet's switch is set to secure power supply operation.
• If irradiation is too low, wait for it to increase.
• Connect a load with lower power consumption to the outlet.
✖ No voltage can be measured at the outlet?
• Ensure that the outlet's switch is set to secure power supply operation.
• Ensure that the switch, outlet and control light for secure power supply operation are
correctly connected.
4.3.2

Deactivating Secure Power Supply Operation

1. If necessary, disconnect the load from the outlet.
2. Turn the switch of the outlet to grid operation.
☑ Grid operation is activated.
3. Switch on the circuit breaker of the PV system.
☑ The inverter connects to the utility grid and starts feed-in operation.
User Manual
4 Operation of the Inverter
SB30-77-1SP-US-40-BA-en-11 19