Sonnen sonnenBatterie 10, Installation Instructions Manual, Page: 55 / 100

Using digital inputs/outputs (optional) | 8
KD-557 | 1000241 | EN | 02 55 / 100
8 Using digital inputs/outputs (optional)
NOTICE
Connection lines too long
„
Ensure that the mains line and signal line connected to the storage system
do not exceed a maximum length of
30 m .
NOTICE
Over voltage when switching off electromagnetic relays
Damage to components!
„
Only use electromagnetic relays with a protective circuit (e. g. with a free-
wheeling diode) or semiconductor relays.
The wiring configurations described in this section are examples only and serve
as a guide for installers working on the system. The wiring configurations are
not universal. The installers working on the system are responsible for the cor-
rect wiring of the system. In some cases, the permission of the distribution grid
operator or power supply company may be required.
External components (terminals, contactors, relays, etc.) needed to wire up the
digital inputs/outputs are not supplied.
8.1 Overview of digital inputs and outputs
• The signal line for using digital inputs and outputs is connected directly to the central
unit of the storage system. This approach ensures flexible use of the special functions, as
only the required connections are used and the line lengths can be adapted individually
to the on-site conditions.
• The connections on the central unit of the storage system are marked as DI/DO with
numbers 1–20. The following table shows which number stands for which digital input or
output and indicates the possible wire cross-sections for the signal lines used.
• Two relays are additionally installed on the central unit, which are required in order to
use PV reduction. These relays are labelled PV red. 1 and PV red. 2 .
Illustration 23: Position of connections on the central unit
„
Use the fixing ties from the accessories set to affix the attached cable to the power
module.