Normal
operation
During normal
operation the LCD display shows the following
information.
The output 'on'
timer shows the time elapsed since the output
was turned on. The value displayed is
'held' when the
output turns off and resets to 00:00:00 each
time the output turns on.
The high
voltage preset mode is shown on the top right.
Either 'Auto' or 'Man'
The voltage
measured on the input circuit is displayed in
real time
The output
state is shown on the bottom right of the
display. If it is prefixed with an '*'
symbol, the output hold down timer is active.
During this hold down period the output cannot
change state again regardless of changes to the
input voltage, or in manual mode, user input.
If the high
preset voltage mode is set to automatic and the
input voltage is above this set point the load will
automatically be connected. If manual mode
is selected the controller always starts-up with
the load disconnected
In manual mode,
while the input voltage is above the high preset
voltage pressing the 'Set' key toggles the
output on and off. If the hold down timer is
enabled the output can't be toggled again during
the hold down period.
When the
voltage at the sense input is below the 'low
preset' voltage the load output relay will turn
off, again subject to the hold down timer being
inactive.
The high and
low preset voltages can be adjusted to any
voltage, with a minimum of 0.1 volts difference
between them. If either low or high preset
is adjusted past the other preset the two presets will
automatically track with the adjustment to
maintain 0.1 volt difference. e.g.
If the high preset is 12.50 volts and the low
preset is adjusted to 13.00 volts, the high
preset will automatically move to 13.10 volts.
User
configuration
To enter the
setup menu, press and hold the 'Set' key for +1
second. The first menu item will be shown
on the top line of the display.
To scroll
through the menu options use the up/down keys.
Options are:
- Set low
preset
- Set high
preset
- Set input
offset
- High
preset mode
- Backlight
mode
- Hold down
time
- Voltage
scale
- Default
all
- Exit
To select a
menu item press the Set key. The option
parameter will appear on the second line of the
display. Change the option using the up or
down keys. For the preset, offset and hold
down time settings, pressing and holding the up
or down key allows continuous adjustment.
- Option:
Set low preset
- Parameter:
low preset voltage
- use up/down keys to adjust value in 0.1
volt increments
- press set key to save and return to menu.
- Option:
Set high preset
- Parameter:
high preset voltage
- use up/down keys to adjust value in 0.1
volt increments
- press set key to save and return to menu.
- Option:
Set input offset
- Parameter:
real time input voltage with offset applied.
- use up/down keys to adjust the displayed
voltage while measuring the actual battery
terminal voltage with a precision voltmeter.
- press set key to save and return to menu.
- Option:
High preset mode
- display
shows selected option.
- manual : when input voltage is above
preset high volts, load must be manually
connected
- automatic : when input voltage is above
preset high volts, load is automatically
connected
- use up/down keys to scroll through options
- press set key to save and return to menu
- Option:
Backlight mode
- display
shows selected option.
- On : backlight is always on
- Off : backlight is always off
- Auto : backlight turns on when any key is
pressed, turns off after 15 seconds.
- use up/down keys to scroll through options
- press set key to save and return to menu
- Option:
Hold down time
- display
shows hold down time in seconds
- adjustable from 0-99 seconds. 0 means hold
down function is disabled.
- use up/down keys to adjust hold down time
- press set key to save and return to menu
- Option:
Voltage scale
- display
shows selected option.
- 0-16 volts
- 0-32 volts
- use up/down keys to scroll through options
- press set key to save and return to menu
(Note: this option requires the resistor
divider network on the control circuit board
to be fitted with the correct resistor
values, this is explained in circuit
description)
- Option:
Default all
- display
shows selected option.
- Yes? : all parameters are set to
factory default values
- No? : no parameters are
changed,
- use up/down keys to scroll through options
- press set key return to menu and reset
parameters if option 'Yes?' was selected.
- Option:
Exit
- Press Set
key to exit setup menu, there are no
parameters.
- Display
shows 'Setup complete' while configuration
is saved to Non-volatile EEPROM memory
- Controller
returns to normal operation.
n.b. When the
controller is first powered on from new it will
display 'Bad config data, Initialising...'
This is normal and once initialised will not
display again unless the stored option
configuration data has become corrupt.
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