15465 Rev F 5/2/97 P/N 15465:F
58
Battery Connection
The MS-5012 contains a battery disconnect relay which has multiple
purposes. The primary purpose is to disconnect the battery when the
battery voltage is less than 7.0 volts during an AC loss condition. This
prevents the MS-5012 from transmitting erroneous data to a Central
Station under unsafe operating power. Also, with AC power applied,
the disconnect relay allows for battery voltage measurements in the
normal and troubleshoot modes.
Due to the presence of the disconnect relay, it is not possible to
initially (out of the box) power up an MS-5012 from the battery. AC
power must first be applied for 6 seconds. Once AC power is applied,
do not connect a low capacity battery (less than 7.0 volts) to the
system.
When replacing a bad battery, turn off AC power before connecting the
new battery.
Relays in the Master FACP activate various input circuits on the MS-5012. Messages (event codes)
programmed for a particular input circuit (channel) will be transmitted to the central station upon relay
activation.
6.0-1: Slave Communicator Connections
Inputs are
supervised and
power limited
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