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Aeca Xtender XTH 3000-12 Installation And Operating Instructions Manual
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Steca XtenderInstallation and Operating Instructions 723.932 Xtender V0.511 Seite 23Overheating of the Xtender: Insufficient ventilation, increased ambient temperature or obstructedventilation may lead to overheating of certain internal components of the unit. In this case, thedevice will automatically limit its power output as long as this abnormal situation persists.The Xtender is protected by the internal fuse from incorrect polarity (24 V and 28 V versions). TheXtender XTH-3000-12 does not have an internal fuse and can be protected by an external 400 Afuse.6.2.9 AUXILIARY CONTACTSThe Xtender has two dry reversing contacts that are potential-free. The status of the contacts inidle mode (deactivated) is indicated by the annotations, N.C. = normally closed and N.O. =normally open.Maximum contact loads: 230 Vac / 24 Vdc: 16 A or: > 36 Vdc / 3 AThese dry contacts are programmed by default for the following functions:Contact no. 1 (AUX1) : alarm contact by default. It is activated when the inverter is out of serviceor is working at reduced performance, either because of manual control or if there is anoperational fault such as overload, undervoltage of the battery, overtemperature, etc.Contact no. 2 (AUX 2): The contact has a load shedding function by default and is activated whenthe battery voltage corresponds to the configurations {1356/1357}.These auxiliary contacts can be freely programmed by the RCC-02/03 remote control for variousapplications.The functions of the two auxiliary contracts can be modified and programmed variously with thehelp of the RCC-02/03 control.If the operator or installer requires different behaviour for the auxiliary contacts, they are bothfreely and individually programmable depending on the battery voltage and the inverter statusand the internal clock.The intelligent programming of the auxiliary contacts allows many applications to be consideredsuch as:Automatic startup of the generator (two or three wires)Automatic load shedding of the inverter (2 sequences)Global or individual alarmAutomatic disconnection (load shedding) of the source6.2.10 T HE REAL TIME CLOCKThe Xtender has a real time clock that allows the functioning of the auxiliary contacts to bemanaged, in particular. This clock must be adjusted via the use of the RCC-02/03 remote control.If you wish to retain the adjustment of the clock even if the installation is out of operation (button1)) or in the absence of a battery, a lithium-ion type 3.3 V disc battery (CR-2032) must beinserted into the battery carrier (5) which is on the left of the junction box.6.2.11 REMOTE CONTROL VIA DRY CONTACTThe functioning of the Xtender may be interrupted by opening the connection, normally betweenthe two terminal points “REMOTE ON/OFF”, fig. 8a-(7). Operation will recommence when thisconnection is re-established. The device is delivered with a bridge between the 2 points of thisterminal.It is also possible to control this function according to the different variants indicated in fig. 8b. If avariant is used, the jumpers (b) must be positioned at 1 a-b and 2 a-b.Operating voltage: Max. 60 V eff. (I max. 30 mA)In multi-unit configurations (see below) the interruption of operation of just one of the system’sunits by the cabled control (7) involves the immediate interruption of operation of the other unitsof the system. This input can be used, for example, as an emergency stop.6.3 Multi-unit configurationsSeveral Xtenders can be used in the same system, either to create a three-phase system or toincrease the power output of a single or two phases. The implementation of this configurationrequires particular precautions and it must be installed and commissioned by qualified personnelonly.The inverters selected must be of the same type and the same rated power output. There is ashared battery bank.In these multi-unit system, the units must be interconnected via a communication bus connectedto the connectors (3) by cable (art. no. CAB-RJ45-2) of a maximum length of 2 metres. |
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