Tait TB9400 Specification Manual

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TB9400 Specifications Manual Base Station Specifications 13© Tait Limited July 2017DC InputInput voltageUser-programmable alarmsaLow battery voltageHigh battery voltageUser-programmable limitsbStartup voltage(after shutdown)Shutdown voltageBattery protection (fail-safe) limits cStartup voltageUndervoltage shutdownOvervoltage shutdownOvervoltage shutdown reset12V PMU10V to 14V14V to 17.5V10.9V to 15V ±0.3V10V to 13.5V ±0.3V10.8V ±0.2V9.5V ±0.3V18.1V ±0.3V17.1V ±0.3V24V PMU20V to 28V28V to 35V21.8V to 30V ±0.5V20V to 27V ±0.5V21.6V ±0.5V19V ±0.5V36.2V ±0.5V34.2V ±0.5V48V PMU40V to 56V56V to 70V43.6V to 60V ±1V40V to 54V ±1V43.2V ±1V38V ±1V72.4V ±1V68.4V ±1Va. User-programmable alarms can be set for low or high battery voltage, using the web interface. The alarms will be triggeredwhen the set voltage levels are reached. These limits are subject to the tolerances of the battery protection circuitry, asstated in “Battery Protection (Fail-safe) Limits” above.b. The user-programmable startup and shutdown limits allow for adjustable startup and shutdown voltages. Using the webinterface, these limits can be adjusted for different numbers of battery cells, or for the particular requirements of the basestation operation. Once the limits are reached, the PMU will shutdown. These limits are subject to the tolerances of thebattery protection circuitry.c. The battery protection limits are set in hardware at the factory and cannot be adjusted by the user. These limits will not bereached under normal operation conditions, but are provided as “fail-safe” measures to protect the battery from deepdischarge.Input current0V to battery protection startupvoltage dBattery protection startup voltage touser-programmed startup voltagee12V2mA maximum40mA typicalat 10.8V24V2mA maximum30.1mA typicalat 21.6V48V1.2mA maximum13.2mA typicalat 43.2VOperating current refer to “Power and Current Consumption” on page 15d. When the input voltage drops below the battery protection undervoltage shutdown limit, and until the voltage rises above thebattery protection startup voltage.e. At initial power-up; or, after battery protection has occurred, when the input voltage rises above the battery protection startupvoltage (PMU now under control of its microcontroller), but is still below the user-programmed startup voltageProtectionFault current (input)Wrong input voltageWrong input voltage polaritycircuit breaker or fuse in external wiring felectronic lock-outshunt diodef. Provided by user.GeneralEfficiency at rated output12VDC24VDC48VDC82%85%90%