Configuring The Load-Dependent Generator Request - SMA SUNNY ISLAND 3.0M Installation Manual

8 Commissioning
Example: from 10:00 p.m. to 6:00 a.m., the generator is not to start where possible.
Figure 27: Profile of the SOC and the times for generator requests
For the standard time period, the start time is set to 6:00 a.m. and the end time to 10:00 p.m. The lower SOC threshold
is set to 40% and the upper SOC threshold is set to 80% in this time period.
For the additional time period, the start time is set to 10:00 p.m. and the end time to 6:00 a.m. The lower SOC threshold
is set to 30% SOC and the upper SOC threshold is set to 40% SOC in this time period.
Procedure:
1. Log in to the communication product as Installer (see the user manual of the communication product) or switch to
expert mode on the Sunny Remote Control (see the Sunny Island operating manual).
2. Set the parameters for the standard time period:
• Select the parameter End time additional time period generator request / 235.07 GnTm1Str and set it
to the start time for the standard time period.
• Select the parameter Battery state of charge limit for generator start / 235.03 GnSocTm1Str and set it
to the lower SOC threshold during the standard time period.
• Select the parameter Battery state of charge limit for generator disconnection / 235.04 GnSocTm1Stp
and set it to the upper SOC threshold during the standard time period.
3. Set the parameters for the additional time period:
• Select the parameter Start time for the additional time period of generator request / 235.08 GnTm2Str
and set to the start time for the additional time period.
• Select the parameter Battery state of charge limit for generator start in the additional time period /
235.05 GnSocTm2Str and set it to the lower SOC threshold during the additional time period.
• Select the parameter Battery state of charge limit for generator disconnection in the additional time
period / 235.06 GnSocTm2Stp and set it to the upper SOC threshold during the additional time period.
8.4.4.4

Configuring the Load-Dependent Generator Request

Significance of the load-dependent generator request:
If you activate the load-dependent generator request, the Sunny Island requests the generator in the event of
a high load. This prevents the battery from deep electric discharging and cycling and extends its service life.
The performance of the off-grid system for supplying loads increases to the sum of the generator power and the power
of the Sunny Island inverter. This improves the system stability. The load is the average output power of the Sunny Island
inverter.
94 SI30M-44M-60H-80H-IA-en-32
SMA Solar Technology AG
Installation manual