Firmware Version 143 ff. Rev 1.39 03.10.17
Dingo 4040P Reference Manual
24
will control each external switch block. This
is done in the ESET sub menu. A long push on
ESET brings up the first switch setting. Short
pushes move to the next switch until ESET
returns after switch C.
The following table shows the control options.
7.5.3 BSET
Configuring B- Sense Input
The terminal labelled B- (right most terminal of
the green terminal block) can be configured for
one of four functions according to the BSET table
below. For SET/MODE/BSET=0, connect the B-
terminal to the negative terminal of the battery
via a 100mA fuse. This allows the Dingo to read
the true battery voltage. This is important if
there is significant voltage drop along the wiring
(including any fuse) between the Dingo BAT-
terminal and the negative terminal of the battery.
(If there is significant voltage drop on the positive
side, then take the BAT+ terminal directly to
the battery positive via a 100mA fuse, and wire
the solar array positive and load positive to the
battery positive terminal but not the Dingo.
These wires will each need an appropriate fuse.
The intention is that the array current and load
do not pass through the same wire as the Dingo
supply current.). See figure 7.5.3A
Shunt Control
The Dingo supports either series control,
shunt control, or both at the same time. In
a hybrid system, the main solar component
is controlled by the SOL input and the other
charge component (wind, hydro, etc) is directly
connected to the battery and controlled by a
dump load which diverts excess charge. The
dump load is managed by the shunt control
function. This can operate via the LOAD or ‘G’
terminal either directly or through a relay. These
functions are configured in the LSET and GSET
screens. (see above)
Regulating Wind / Hydro:
Shunt control is appropriate for wind generators
or microhydro systems, which require a constant
load on the charging source so the generator
doesn’t overspeed and destroy itself. In this case
the charging source must remain connected to
the battery at all times.
“Shunt control” (also referred to as “diversion
control”) refers to the technique of controlling
the battery voltage by drawing energy from
the system with a ‘dump load’, rather than
disconnecting the charge source as “series
control” does on the solar input.
To regulate a wind or microhydro installation
with shunt control, a dedicated dump load must
be available for the Dingo to switch across the
battery. The dump load current should be larger
(at the range of expected battery voltages) than
the maximum charge current available from your
generator.
The function of the dump load is to ‘soak up’
energy coming in which the battery cannot store
in order to maintain the desired battery voltage.
7.5.2 ESET: External switch setup
The Dingo has a serial bus which allows the
user to add external devices to increase the
control system’s capability. One such device is an
electronic switch. This can be used to increase
the charge current being regulated or increase
the load current being controlled by the load
disconnect function.
The user needs to select which internal function
7
SET/MODE/ESET Selection Summary:
Selection Function
0
Charge control (normal/slow)
On when Dingo wants to charge
1
Charge control (shunt/slow)
Off when Dingo wants to charge
2
Load disconnect (inverse)
On when load should be off
3
Load disconnect (normal)
Off when load should be off
4
Alarm (normal)
On when battery<ALRM voltage
5
Alarm (inverse)
Off when battery<ALRM voltage
6
Event (normal)
On when the event is active
7
Event (inverse)
Off when the event is active
