Plasmatronics PL20 - 7.4 REG menu (Customising Regulation Settings)

Rev 6.3.0 12.09.16
PL Reference Manual
19
BATV
CHRG
LOAD
IN
OUT
DATA
SET
TIME VOLT PROG REG MODE EVNT
BMAX
EMAX
ETIM
EFRQ
ABSV
ATIM
FLTV
HYST
BRTN
CHRG
BFRQ
TCMP
Set max boost voltage
Set max equalisation voltage
Set equalisation time
Set # days between eq.cycles
Set absorption voltage
Set absorption time
Set oat voltage
Set hysteresis
Set boost return voltage
Set charge current limit
Set max days to between boost cycles
Set temp compensation prole
Fig. 7.4A - Regulation Settings (Program 4 only)
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
CHRG Charge current
limit
PL20 0.5-20A
PL40 0.5-40A
PL60 0.5-60A
PL80 0.5-80A
BFRQ Maximum number of days
between boost cycles
1-20
TCMP Selection of temperature
compensation profile (see
following)
0-8
7
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 figure 7.4A).
The settings are described below for 12V systems.
For other voltages the range can be scaled from
this. (eg. for a 24V system, multiply all voltages by
2.)
SET/REG Submenu Summary:
7.4.1 HYST (Hysteresis Value)
When not in PWM mode, the PL controls the
battery voltage by simply switching the charge
current on and off. It turns off the charge
current at the relevant 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 PL in float mode and slow switching
(non 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: If you are switching a mechanical relay for
regulation purposes, you may need to increase
the HYST value so that the relay is not switching
as often.