MYERS MP Series, Инструкция по установке, эксплуатации и обслуживанию

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2.2.15 Low Battery Mode
Note: Not to scale. All values are shown for illustrative purpose only and will charge under
different operating and battery conditions. Actual times will be different. Perform a run time test
(Section 2.4.1) for application specific operating conditions.
Low Battery Warning
The batteries will continue to power the load, but they are almost discharged and cannot
provide power much longer.
TIP: The operator should shut down unnecessary loads to extend battery backup time.
Low Battery Shutdown
When the battery decreases to 42.5VDC for 3 seconds, the unit automatically shuts output
OFF and goes into SLEEP mode waiting for input power to return. The batteries are
considered fully discharged and can no longer support the load, but they have enough
power to k
eep the unit’s monitoring and control circuits active. The housekeeping power
supply is kept alive.
Low Battery Disconnect
When the battery discharges to 40VDC for 10 seconds, the unit automatically goes into this
mode. The batteries are disconnected from the unit to protect the batteries from being
damaged by a deep discharge. Both the LED and LCD shut OFF, showing the unit is shut
off. The unit stays off until line power or a backup generator is available or fresh batteries
are connected. To prevent battery damage, if the BBS is to remain in a low battery
disconnect state for an extended period. The BBS and battery circuit breakers must be
switched OFF and the manual bypass switch must be switched to the Bypass position. For
additional protection disconnect the Quick Connect style battery connector from the BBS.
Note: only authorized personnel should perform all parameter changes, as it
may affect the performance of the traffic intersection