Xtender XTS 900-12 User Manual
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Studer Innotec SAXtenderUser manual V4.6.0 307.3.2 Battery charger current settingThe maximum charging current can be adjusted by the knob (16) on the XTS or via remote controlRCC-02/03 on the other models or on the XTS with the module TCM-01. The parameter {1138} is partof the basic parameters of the device and must be adjusted at commissioning (see chap. 5 - p. 24)depending on battery capacity. It will be chosen in principle a value between 0.1 and 0.2 x thenominal battery capacity C10. (I.e. 10A for a battery of 100 Ah/C10)7.3.3 Battery protectionThe battery is protected against deep discharge by stopping the inverter if the low voltagedisconnection level {1108} is reached. The indicator (52) flashes once when the battery has reachedthe disconnection threshold and the inverter will stop shortly after {1190}. This threshold can bedynamically corrected {1191} with an advanced algorithm that computes automatically the batteryvoltage compensation in function of the instantaneous power. This correction may also be manuallyfixed {1532} by setting the low voltage disconnection at full load {1109}. These dynamic correctionscan be deactivated by setting the parameter {1191}. The inverter will stop immediately if a criticallyvoltage of 1.5V/cell is reached. The inverter will restart automatically when the battery voltage hasreached the restarting threshold {1110}.This restarting threshold {1110} can be automatically readjusted if the parameter {1194} is activated,in order to better protect the battery against repeated cycling in an "almost empty" state of charge.The restarting threshold is then incremented {1298} up to a maximum value {1195} whenever the LVD(low voltage disconnection) is reached. The restarting threshold will be reset to its initial value whenthe value of parameter {1307} is reached.If the inverter is repeatedly {1304} encountering a low voltage disconnection in a short period {1404}it will stop permanently and will only start again via an operator’s manual restart.7.4 XTENDER PROTECTIONThe Xtender is protected electronically against overloads, short-circuit, overheating and reversecurrent (cabling of a voltage source on AC-Out).7.4.1 Protection in case of overloadIn the event of overload or short-circuit at the output, the inverter stops for some seconds {1533}{1400}, and restarts. If the inverter is repeatedly encountering this situation {1300} in a short period, itwill stop permanently and will only start again via an operator’s manual control.7.4.2 Protection against overvoltageIf the battery voltage exceeds the value set by the parameter {1121} the inverter stops and starts upagain when the voltage is less than {1110}. If the Xtender is repeatedly encountering this situation 3times during one minute, it will stop permanently and will only start up again via an operator’s manualcontrol.A battery voltage greater than 1.66x the nominal voltage may lead to significant damageor destroy the device.7.4.3 Protection against overheatingInsufficient ventilation, increased ambient temperature or obstructed ventilation may lead tooverheating of certain internal components of the unit. In this case, the device will automatically limitits power output as long as this abnormal situation persists.Parameters of the battery charger are under the responsibility of the operator. Incorrectparameter that does not correspond to the charging methods of the batteryrecommended by the manufacturer may be dangerous and/or considerably diminish thebattery service life. If the factory settings are modified, it is imperative that the new valuesbe entered in the parameter table p. 47. |
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