Steca Xtender
Installation and Operating Instructions 723.932 Xtender V0.511 Seite 16
4.5.6 CONNECTING THE AC SUPPLY SOURCES
The Xtender is intended to be supplied by alternative voltage sources such as the public grid or a
generator. Check that the rated voltage of the source corresponds to the rated voltage (34) of the
Xtender specified on the type plate (fig. 3b).
The source must be connected to the input terminals marked “AC INPUT” (13) with sufficient wire
section, depending on the power output of the source, and protected by a protection device of the
appropriate calibre. This will be at the maximum equal to the current I AC in max (35) specified
on the type plate (fig. 3b).
The terminals are marked in the following way: N = neutral, L = live, PE = protective earth
(connected to the case of the device).
4.5.7 WIRING AUXILIARY CONTACTS
These contacts are reversing contacts that are potential-free. The admissible currents and
voltages for these contacts are 16 A / 250 V AC or 3 A/50 V DC max. The representation of the
contact near the terminals corresponds to the status of the contact in idle mode (light indicator (5)
off). The cabling of these auxiliary contracts depends solely on the application and cannot be
described in this manual.
The factory-set functions for these 2 auxiliary contacts are covered in the chapter 0 – p. .
4.5.8 CONNECTING THE COMMUNICATIONS CABLES
The Xtender is equipped with a pair of RJ45/8 connectors that allow information transfer via a
communication bus for different consumer types which have the proprietary protocol of Steca. In
this network all parties in the network are connected in series (chain).
The length of the communication bus cable must not exceed 300 m.
In a system comprising a single Xtender, the connection of the RCC-02 or RCC-03 may be
conducted without stopping the Xtender (warm).
The communication bus will be used to interconnect other Xtender inverters in the case of a
multi-unit application or to connect other types of users who have the proprietary protocol of
Steca. In these cases, the installation must be switched off using the main “ON/OFF” button (1) to
connect the units via the communication bus.
The 2 switches for terminating the communication bus, “Com. Bus" (4) both remain in
position T (terminated) except when both connectors are in use. In this case, and only in
this case, both must be placed in the O open position. If one of the two connectors is not
in use, the two termination switches (14) will be in position T.
4.5.9 CONNECTING THE TEMPERATURE SENSOR (BTS-01)
The temperature sensor, BTS-01 is supplied with a 3 m cable fitted with RJ11/6-type plugs. It
may be connected or disconnected at any time (including when the device is in use) using the
corresponding socket (2) marked “temp. sens.” on the Xtender. Plug the connectors into the
socket (2) until they click in. The temperature sensor sleeve may simply be glued onto the battery
or directly next to it. The temperature sensor will be recognised automatically and the correction
made immediately.