SMA SUNNY ISLAND 8.0H - Questions on Cluster Systems and Multicluster Systems

6 Electrical Connection SMA Solar Technology AG
62 SI80H-60H-OffGrid-IA-en-11 Installation Manual
8. Enter the function of the multi-function relay used in the configuration table
(see Section 7.10.1"Use of the Multi-Function Relays",page90). Note one of the following
values here:
9. Repeat steps 1 to 9 for two-level load shedding. Connect the second load-shedding contactor
to an unused multi-function relay.
6.23 Connecting the Time Control for External Processes
The off-grid inverter/master has two timers for time-dependent control of external processes. For each
timer, you can set the starting day and time that the multi-function relay is to be switched once, daily
or weekly.
If you wish to control external processes with an off-grid inverter in a time-dependent manner, connect
the control as follows:
1. Connect the control to the multi-function relay (see Section 6.18"Assignment of Multi-Function
Relay",page54).
2. Enter the function of the multi-function relay used in the configuration table (see
Section 7.10.1"Use of the Multi-Function Relays",page90). Note the TM1 value for timer 1
or the TM2 value for timer 2.
Value Explanation
AutoLodExt Setting for one-level load shedding When the off-grid inverter switches to an
external energy source, load shedding is stopped and the loads are supplied
by the external energy source. The battery is only charged with excess
energy.
AutoLod1Soc Setting for 1-level load shedding or the first level of 2-level load shedding.
Load shedding is only stopped when the battery has been sufficiently
charged.
AutoLod2Soc Setting for the second level of 2-level load shedding. Load shedding is only
stopped when the battery has been sufficiently charged.
MccAutoLod Setting for additional 1-level load shedding in a multicluster system. Load
shedding is only stopped when the batteries of the extension cluster have
been sufficiently charged.