Rev 6.3.0 12.09.16
PL Reference Manual
28
Battery Positive
Example - Battery Low Alarm Output
PL20/40
Red
LED
B+ S- B- L-
B-T+T-G
Resistor
(R1)
Fig. 7.5.7A - Alarm Wiring
7
7.5.6 BCAP
BCAP sets the effective Amp-hour capacity of
the battery being charged by the PL. This is used
by the State of Charge data screen. A long push
on BCAP allows you to set this value. You should
set the battery capacity you actually expect as
discussed in Section 6.4 (SOC).
BCAP’s range is 20Ah-20,000Ah. Short pushes
will increment BCAP by 20Ah until it reaches
1000 Ah. At this point, the increment increases to
100Ah and the display changes to thousands - i.e.
1000 is displayed as 1.0, and 1100 as 1.1. When
the display reaches 20,000Ah (shown as 20.0),
it will cycle back to 20Ah (shown as 20). It’s
important that you take notice of the difference.
If you intend to set 20,000Ah you would not want
20 Ah instead. The two appear one after the
other on the PL display during setting. The only
visible difference is the decimal point to show
20,000 Ah.
7.5.7 ALRM
Long-push here to set the alarm voltage. If the
battery voltage falls below the alarm voltage, the
PL will activate its internal Alarm function (it is
sampled every 60 seconds). If the LSET / GSET
settings have been configured appropriately, this
can be used to set off an audible alarm (or any
Example - Battery Low Alarm Output
other type of alarm) connected to the LOAD- or
‘G’ terminal. There is no audible alarm built into
the PL. The PL can send a signal or power to an
external alarm of some kind.
System R1 Value
12V
1K,1/4W,5%
24V
2K2,1/2W,5%
48V
4K7,1W,5%
(Higher wattage resistors may be used)
R1 values are calculated to give adequate LED
brightness at low battery voltage, but not burn-
out at high battery voltages (eg. in case output
function changed by mistake).
Settings:
SET
/
PROG=4
SET
/
MODE
/
GSET=9
(on when battery voltage < alarm setting)
SET
/
MODE
/
ALRM=11.4V
(for example. Set as required.)
7.5.8 RSET
A long-push on RSET will reset today’s
Performance Data and the clock to zero
(midnight).
Note that you will need to re-enter the current
time on the PL’s internal clock, but your other
settings and history will be retained.
Also note that any ‘quiet-time’ generator
functions will not work until the clock is reset
since midnight is a ‘no-go’ time zone!
