Installation manual

Page 9
• Brake: Brake light for all trailer, 5
th
wheel, and
pickup camper installations, or air brake on
diesel motor homes.
• Park: The park signal/neutral (transmission)
from motorized motor homes or van
conversions.
Press ENTER to store in permanent memory. This
will not have to be changed unless the type of safety
input is changed or the EC-30 is installed in a different
application.
Setting START/STOP @ Values - General
When AUTO< is selected Quiet Time prefill (charging
the battery two hours prior to the beginning of Quiet
Time) occurs if the battery level is less than FULL (all
three bars of the level gauge are on).
Care should be taken changing the settings. It is
recommended that these setting only be changed by
qualified personnel that understand the charging
system and have checked its operating voltages.
If STOP @ V has been changed to a user defined
value, then pre-fill occurs whenever the battery voltage
is less than the STOP @ V voltage setting. When the
battery is full or reaches the user set STOP @ V the
genset will be stopped.
START @ V
The START @ V is the voltage to which the house
battery must fall to cause the genset to automatically
start due to a low battery. The default value is Auto
which starts the genset when one bar is displayed in
the battery level indicator. See the Operation section of
this manual. The START @ V voltage range is 10.5-
12.5 volts. A lower voltage will decrease the number of
starts due to a low battery. A higher voltage will
increase the number of start due to a low battery.
Setting the START @ V too high may result in frequent
“false” starts due to a “low battery” start.
Time @ START V
The Time @ START V is the length of time that the
house battery voltage must be below the START @ V
voltage before the genset will automatically start. The
default value is 15 seconds. The range is 5-60
seconds. Setting a shorter time will increase the
number of generator starts due to temporary voltage
dips, (increase the “sensitivity” to voltage dips). Setting
a longer time will decrease the “sensitivity” to
temporary voltage dips.
STOP @ V
The STOP @ V is the voltage to which the house
battery must rise to cause the genset to automatically
stop due to a full battery. The default value is Auto
which stops the genset when three bars are displayed
in the battery level indicator. See the Operation section
of this manual. The STOP @ V voltage range is 13.2-
14.5 volts. A lower voltage will not fill the battery as full
but it will reduce the amount of time the genset will run.
A higher voltage will fill the battery to a higher state of
charge, but increase the amount of genset run time. If
the charge system is unable to reach the STOP @ V
voltage, the result will be excessive genset running.
This setting does not change the battery charging
voltage. Do not set STOP @ V above the voltage of
the battery charger.
Time @ STOP V
The Time @ STOP V is the length of time that the
house battery voltage must be above the Stop @ V
voltage to cause the genset to automatically stop due
to a full battery. The default value is one minute. The
range is 1-60 minutes. Setting a shorter time will
decrease the genset run time. Setting a longer time
will increase the length of time the genset runs to
charge the battery.
Selecting Appropriate Values
The selection of the start and stop voltages and the
time required to be at those voltages requires trade-
offs. It is a balance between the number of genset
starts, the length of genset run time, and the desired
battery charge level. The default values have been
selected to ensure that the battery stays charged and
the genset does not run excessively or needlessly start
for temporary voltage excursions. We recommend the
default values be used until the performance of the
system can be assessed.
Setting the START @ V higher will result in more
genset starts and a quicker response to voltage dips.
Setting the Time @ START V shorter will also increase
the response to voltage dips. Both will cause more
genset starts.
Setting the STOP @ Voltage higher will result in more
genset starts and shorter genset runtimes for battery
charging. Setting the Time @ STOP V longer will
increase the genset runtime for battery charging.
Remember charging current falls to very low levels at
the end of charge. Typically it is preferred to use shore
power and not the genset to “top off” or fully charge the
battery. Avoid running lightly loaded gensets. Run
the system through a complete automatic start/stop
cycle after changing setting to confirm proper
performance.