15272 Newsboy Circle
Huntington Beach
California 92469
Phone: 714-751-0488
Fax: 714-896-9679
www.newmarpower.com
Setting Low Amp-Hours Alarm
While viewing Amp-Hours, press and hold the key
for ten (10) seconds. You will hear a beep and the Low
Amp-Hours alarm value will be displayed. Use the
and ∆ keys to change it. Press the +key for 1/2
second to save the new value.
Changing Battery Capacity
First remove power from the DCE, press and hold the
key and then re-apply power to the DCE. The
Battery Capacity (in Amp-Hours) will be displayed.
Use the and
Battery Capacity (in Amp-Hours) will be displayed.
keys to change it. Press +key for
1/2 second to save it.
Change Charge Efficiency
The Default Charge Efficiency is 80% (meaning you
get back 80% of what you put into the battery). To
change it, remove power from the DCE, press and hold
the and
change it, remove power from the DCE, press and hold
keys and then re-apply power to the
DCE. Charge Efficiency % is displayed. Use the and
DCE. Charge Efficiency % is displayed. Use the
keys to change it. Press the +key for 1/2 second to
save the new value.
Changing Peukert’s Exponent
Peukert’s Exponent relates how efficiently you can
draw current from a battery. Because of inefficiencies,
the faster you drain the battery, the smaller it appears
to be. The default Peukert’s Exponent is 1.25 (shown as
125), which is typical for many batteries. To change
it, remove power from the DCE, press and hold the +
and ∆ keys and then re-apply power to the DCE.
Peukert’s exponent will be displayed. Use the and
Peukert’s exponent will be displayed. Use the
to set the desired value. Press the +key 1/2 second
to save the new value. If you battery seems to
discharge faster than what the DCE is telling you, try
increasing Peukert’s Exponent slightly. Lower the
exponent if the reverse is true. The correct setting will
depend upon how you battery was manufactured
and it’s age, etc.
NMEA 0183 Sentences
Volts: $IIXDR, U,xx.x, V,VAH35,*C
Amps: $IIXDR,I,xxx,A, VAH35, *CS
A-H Remaining: $IIXDR,G,xxx, ,VAH35,*CS
*CS =Check Sum
Selecting NMEA 0183, External Alarm or Charger
Control Output
Screw terminal pin (B) can be programmed as NMEA
0183 Data Output, or as a Charger On-Off Control. The
factory default is NMEA 0183 serial data output.
To toggle Screw Terminal Pin (B) between NMEA 0183,
External Alarm Output and Charger Control, press
and hold down both and
External Alarm Output and Charger Control, press
keys for 10 seconds
(unitl you hear a long beep). The display will toggle
between showing “dAtA(Data), “E-Al” (External Alarm)
or “-CC-“ (Charger Control) to show you which mode is
selected. The new output mode is automatically
saved to memory.
A 5V signal (10 mA Max.) is output on screw terminal
(B) whenever an alarm condition exists and the
alarms are enabled or whenever a charger is to be
turned on automatically.
Setting Charger Control On-Off Limits
If the Charger Control function is selected for screw
terminal (B), the DCE can be programmed to
automatically turn a charger on and off, depending
on the amp-hours remaining. The factory default is to
turn the charger on when Amp-Hours Remain drops to
50% of battery capacity and switch off when it returns
to 90% of capacity. Screw terminal (B) outputs a +5V
signal to activate the charger.
To set the upper charger output limit (charger “off”
point) in percent, press both the + and keys to
display amp-hours remaining in percent. Then hold
the ∆ key down for 10 seconds (until you hear a long
beep). The upper charge limit will be displayed in
percent. Use the and
beep). The upper charge limit will be displayed in
keys to set the desired
value. Use the +key to save the new value to
memory.
Resetting Amp-Hours Remaining
While viewing Amp-Hours Remaining press and hold
the key for 10 seconds (until you hear a long beep).
The Amp-Hours Remaining will be reset to full amp-
hour capacity of the battery.
Adjusting Amp-Hour Drift
If the battery systems remains unused for several
weeks, the amp-hour tracking function of the DCE will
start to lose accuracy. This is because small
calibration and measurement errors can accumulate,
causing the displayed amp-hours to “drift” so that it no
longer reflects true amp-hours remaining. To minimize
this long term drift, you can program an amp-hours
drift compensation value between 0 and 100, which
will increase the accuracy. The nominal drift value is
55; to change this value, remove power from the DCE,
press and hold both the +and
55; to change this value, remove power from the DCE,
keys and then
re-apply power to the DCE. Use the and
keys to
set the desired value. Press the +key for 1/2 second to
save the new value.
If the displayed amp-hour is drifting down faster than
actual amp-hours, increase the drift compensation
value slightly. If it is drifting upward faster, then
decrease the value slightly.
3
