Rev 1.3 22.07.09
Dingo Reference Manual
19
7.4.1 HYST (Hysteresis Value)
When not in PWM mode, the Dingo controls
the battery voltage by simply switching the
charge current on and off. It turns off the charge
current at the relevant voltage set point for the
state (Float, Boost, Equalise, Absorption), and
allows the charge current to turn back on at a
slightly lower voltage. The gap between the two
voltages is called hysteresis.
Example:
With the Dingo in float mode and slow switching
(i.e. not using PWM), the charge current will
be turned on until the battery voltage rises to
the FLTV value. Once the FLTV value has been
reached, the charge current will be turned off
until the battery voltage falls to FLTV – HYST
(float voltage minus the hysteresis value) at
which time the charge current will be turned
on again until the battery reaches FLTV and the
cycle begins again.
The larger the hysteresis values, the slower the
rate of switching on and off will be.
NOTE: When switching a mechanical relay for
regulation purposes, the HYST value may need to
be increased so that the relay does not wear out
quickly due to rapid switching.
BATV
CHRG
LOAD
IN
OUT
DATA
SET
TIME VOLT PROG
REG
MODE EVNT
BMAX
EMAX
ETIM
EFRQ
ABSV
ATIM
FLTV
HYST
BRTN
CLIM
BFRQ
TCMP
Set max boost voltage
Set max equalisation voltage
Set equalisation time
Set # days between eq.cycles
Set absorbtion voltage
Set absorbtion time
Set float voltage
Set hysteresis
Set boost return voltage
Set charge current limit
Set max days to between boost cycles
Set temp compensation profile
Fig. 7.4A - Regulation Settings (Program 4 only)
SET/REG Submenu Summary:
Name Description
Range
BMAX Maximum voltage in
boost mode
13.5-16.5V
EMAX Equalisation voltage
14.0-17.0V
ETIM
Equalisation time
0-2.0 hours
EFRQ
Number of days between
equalisation cycles
20-150
ABSV
Absorption voltage
13.5-15.5V
ATIM
Absorption time
0-4.0 hours
FLTV
Float voltage
13.0-15.0V
HYST
Hysteresis used when
not in PWM mode
0.1-1.0V
BRTN
Voltage below which
return to Boost mode
occurs
11.0-13.0V
CLIM
Charge current limit
0.5-20A
BFRQ
Maximum number of days
between boost cycles
1-20
TCMP Selection of temperature
compensation profile
(see below 7.4.3)
0-8
7.4 REG menu (Customising
Regulation Settings)
[PROG=4 only]
To adjust the regulation settings, long-push on “SET”,
short-push to “REG”, and long-push (see fig 7.4A).
The settings given below are for 12V systems.
For other system voltages the value can be scaled
from this. (eg. for a 24V system, multiply all
voltages by 2.)
7