Manual

7
Figure 6 Charging Algorithm
Battery Temperature Sensor
7KH%7631R30%DWWHU\7HPSHUDWXUH6HQVRUVXSSOLHGZLWK30PHDVXUHVWKHWHPSHUDWXUHRIWKHEDWWHU\DQGDXWRPDWLFDOO\DGMXVWV
in real time, to charge the battery properly at compensation rate of – 4mv±10%/°C/cell. In case BTS is not present, the PM300 will use 25°C as
default.
Voltage Compensation Charging
:LWKDYROWDJHVHQVRUWKH30FDQDXWRPDWLFDOO\DGMXVWLWVRXWSXWWRFRPSHQVDWHWKHYROWDJHGURSFDXVHGE\DFDEOH7KLVDVVXUHVWKH
right voltage is being delivered for optimal charging.
$GMXVWDEOH&KDUJLQJ&DSDFLW\
8VHUVFDQDGMXVWWKHFKDUJLQJFXUUHQWE\VSHFLI\LQJWKHEDWWHU\FDSDFLW\7KHFKDUJLQJFXUUHQWLVVHWDWWKUHVKROGUDWHRIWKHRIWKH
EDWWHU\FDSDFLW\, &E\GHIDXOW
Lithium Battery Charging
7KH30FDQEHFRQõJXUHGWRFKDUJH/LWKLXPEDWWHU\:LWKWKH/LWKLXPEDWWHU\WKHPD[FKDUJLQJFXUUHQWZLOODXWRPDWLFDOO\EHVHWDW
RIEDWWHU\FDSDFLW\,PD[ &
2.3 Vehicle Battery Charger
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connected to the AC main or PV. When starter battery is less than 12.4V, the PM300 starts charging after 30 minutes delay and stops
charging when voltage reaches 12.8V.
2.4 Power Supply Mode
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2.5 MPPT Solar Charger Controller
PM300 has a built-in MPPT charger for the service battery with:
• Max input voltage 50VDC
• Max charging current 20A
• Max supply current 30A
2.6 Voltage Charging Relay (VCR or commonly known as a VSR)
30PDVWHUSRZHUXQLWKDVDEXLOWLQYROWDJHFKDUJLQJUHOD\9&5ZKLFKRIIHUVDFRQYHQLHQWVRXUFHWRFKDUJHWKHVHUYLFHEDWWHU\E\
alternator whilst engine is running. When the starter battery reaches 13.4VDC with threshold time delay, the VCR will charge the service
battery from the alternator. VCR will continue the charging until the starter battery voltage drops under 12.8VDC.
NOTE: 7KH30ZKHQFKDUJLQJIURPWKHVWDUWHUEDWWHU\GRHVQRWSURYLGHWKHVWDJHFKDUJH,WVLPSO\WDNHV 
whatever power and charging is available from the vehicle alternator.
½ lcc
lcc
11.5V
10 days 1 hr
5mins
SOFT START
STAGE
CURRENT
VOLTAGE
BULK ABSORPTION FLOAT RECYCLE
1 2 3 4 5
1
SOFT START
Increases battery life by gently starting to
charge the battery 5% of bulk
2
BULK
Reduces charging time by delivering maximum
charge to set voltage life by gently starting to
charge the battery 25% of bulk
3
ABSORPTION
Ensures a full charge to the battery
without overcharging
4
FLOAT
Float charge maintains the battery at
100% charge
5
RECYCLE