Siemens BC-35 General Guidelines, Installation Instructions

GENERAL GUIDELINES FOR INSTALLING BC 35 Model BC 35 battery charger transfer module complies UL Standard 864 The module is designed to monitor battery charge status and alert appropriate personnel the batteries may not have the standby power required by NFPA Standard 72 Local Municipal Tie Station or Proprietary BC 35 charging circuit provides a charging current if the voltage of the batteries being used is 18.3 VDC and 27.7 VDC If the battery voltage is of this range the BC 35 will automatically cut off its circuit Disconnect the system power input before the BC 35 and or BE 35 cable connections BC 35 module has a trouble signal for both high and battery conditions A trouble condition occurs normal AC operation when the instantaneous constant voltage across the battery is more than volts peak or is less than 24 volts the battery backup operation when the or constant voltage across the battery more than 30 volts peak or is less than 21 volts Industry Inc Technologies Division Park NJ 315 086767 5 Building Technologies Ltd Safety Security Products Kenview Boulevard Ontario 5E4 Canada the battery trouble signal activates because of a low voltage it indicates that the batteries may have that will prevent the BC 35 from providing the power capacity required to meet national and local When the signal activates because of a high battery it indicates one of the following 1 BC 35 malfunc 2 poor battery terminal connections or 3 a battery has an unacceptable high internal resistance is recommended that the batteries be charged prior to if necessary A voltage check of the batteries be performed to ensure that the BC 35 charging cir will begin charging Follow Steps 1 and 2 below Step 2 also be used to troubleshoot the BC 35 when a trouble is indicated 1 the batteries connected to the BC 35 module Remove the battery leads Test the open battery voltage it should be between and 27 VDC Reconnect the battery and test it under a load con If possible remove the AC power from the and measure the battery voltage Activate the devices and again measure the battery Under both conditions the minimum battery voltage is 21 VDC it is not possible to test the batteries as previously utilize a simulated load For example with the disconnected a 12 ohm 50 watt resistor be placed momentarily 2 4 seconds across 24 volt battery connections Measure the battery under this loaded condition Again the acceptable voltage is 21 VDC the batteries if the results of b c or d above are acceptable 2 that the BC 35 is providing a charging current If an MM 35 is being used in conjunction with a BC 35 the meter and verify that a current is being to the batteries either in a constant or a mode If no MM 35 is being used place an analog VOM meter a 10 amp scale in series with the batteries con to the BC 35 module If the batteries are being the VOM meter will indicate a constant or pulsed current is being provided to the constant charging current or pulsed charging current displayed if the battery voltage is between 18.3 VDC 27.7 VDC Once the battery is fully charged a charging current is present on a periodic basis time between pulses is determined by the rate of due to the internal circuitry of the charger the ability of the individual battery to accept and the charge condition The constant charge is between 5 and 1.5 amps for the BC 35 and proportionally if BE 35 modules are used initial system startup when the battery charger is but the battery trouble indicator remains on batteries may not have had time to properly much as 24 hours may be necessary for After charging for 24 hours with the charging as described above and the BC 35 trouble still on If less than 24V is present across the battery Batteries are not accepting the charge OR Battery capacity is too large for the BC 35 the number of BE 35s being used If more than 30V is present across the battery Batteries used have high internal impedance OR BC 35 is not shutting off the charge state at required voltage point the BC 35 is not providing a charging current test 1 of the P1 plug on the BC 35 module in reference the negative side of the power supply If there are no at this point replace the BC 35 module If there more than 2 VDC at this point and no alarm is replace the CP 35 panel information is provided to assist you in diagnosing routine problems There may be extenuating involved which are not covered here If assistance is needed please contact your Regional or the Siemens Industry Inc Technical Support The BC 35 has been factory set for the bat specified Any alteration or adjust to this module will void both the UL and the Manufacturer Warranty and cause damage to the battery 315 086767 5