Fuse*
Fuse*
Start
Battery
SBI12D
Solar
Panel
Solar Regulator
Circuit
Breaker*
Auxiliary
Battery
FAULT INDICATION
NOTE:
The LED may stay ON for a period after the vehicle is turned OFF.
This is NOT a fault.
Should a fault occur, the Smart Start
®
SBI is set to notify the operator of
the fault. The LED will flash repeatedly with the following sequences:
CODE 1
2 Flashes
Over-Voltage
CODE 2
3 Flashes
Voltage Drop or Excessive Current Draw Fault
Fault code 1:
If the batteries connected to either terminal of the Smart Start
®
SBI
should rise above 15.5 V (31 V on a 24 V system), the Smart Start
®
SBI
will do the following:
Disconnect, if connected. This is to prevent the source of over-voltage
reaching the other battery.
Flash the LED 2 times for 20 seconds, then reassess the fault
condition, continuing until the fault is cleared.
Fault Code 2:
If the Smart Start
®
SBI detects a voltage drop across its contacts of
greater than 1 V for more than 30 seconds then the unit will:
Immediately protect itself by disconnecting the auxiliary battery; and
Flash the LED 3 times for 20 seconds, then reassess the presence of
a fault, continuing until the fault is cleared.
CHECKING THE OPERATION
Once the Smart Start
®
SBI is installed follow the steps below to check
your operation:
1.
Start the vehicle or apply a charge to the start battery.
2.
Once the start battery voltage rises to the ‘ON Volts’ level the
Smart Start
®
SBI will activate, you will hear the solenoid click and see
the LED illuminate.
3.
Now turn off the vehicle or remove the charger from the start battery.
The Smart Start
®
SBI will disconnect the auxiliary battery once the
voltage on the start battery drops to the OFF Volts level, you will hear
the solenoid click and the LED will turn off.
NOTE:
The amount of time it takes for the battery voltage to drop low
enough for the solenoid to turn off will vary due to the battery condition,
age and state of charge (for a new, fully charged battery, it may take
days).
NOTE:
Check the specification table of your Smart Start
®
SBI to see the
specific voltage levels.
NOTE:
As per above, the LED may stay ON for a period of time after the
vehicle is turned OFF.
DUAL SENSING MODELS WIRING
DIAGRAM
Dual Sensing Smart Start
®
SBIs or ‘D’ Series SBIs monitor both the
start battery and the auxiliary. If the unit detects that either battery has
exceeded 13.2 V the isolator will be connected. Dual control provides
the benefit of being able to charge the main battery from a solar panel
or battery charger on the auxiliary battery.
The SBI12D has the added feature of allowing charge both ways.
*When using fuses make sure that the fuse makes a good low resistance connection.
Circuit Breaker/Fuse ratings are dependent on the type of installation and the size of the loads.
FREQUENTLY ASKED QUESTIONS
Why does the LED stay on after the vehicle is turned off?
The LED stays on (indicating the Smart Start® is on & the batteries are linked) until the voltage
drops to 12.7V (25.4V for SBI24). This can take a few minutes to many hours, depending on
size & state of charge of the batteries as well as load on the batteries. To test this feature of the
Smart Start
®
, with the engine turned off, turn the headlights on and the Smart Start
®
LED should
go out, this may take a couple of minutes.
Is the unit protected against voltage spikes?
Yes, the Smart Start
®
SBI incorporates a number of spike protection components specifically
designed to reduce the risk of damaging the unit. The Smart Start
®
SBI is also designed to
prevent any spikes generated by the solenoid coil from affecting any vehicle equipment.
What does the red LED indicate?
The red LED indicates the solenoid is activated and both batteries are connected together and
therefore are both being charged simultaneously. A flashing red LED during operation indicates a
fault. See
Does the internal LED illuminate when I use the external override switch?
Yes.
Can the voltage limits and time delay settings be changed?
Yes. Both upper and lower voltage limits & on and off times can be changed. However, this
needs to be done at the time of manufacture and will incur a relatively minor cost.
We are experiencing repetitive switching of our Smart Start
®
SBI. What could be
causing this?
This can occur for one of two reasons. Firstly, switching a poorly charged second battery into
the system loads the voltage at the Smart Start
®
SBI to below its lower voltage limit, which will
cause the Smart Start
®
SBI to switch back off.
Secondly, voltage drop due to cable length (Smart Start
®
SBI mounted too far from start battery)
can cause the voltage at the start terminal on the Smart Start
®
SBI to be lower than at the start
battery, which can also cause the unit to switch off. Voltage seen by the Smart Start
®
SBI will
now rise again until the Smart Start
®
SBI switches back on. This switching will continue until the
cause of voltage drop is removed. On and Off Time delays are built into the product to avoid the
solenoid contacts chattering in this scenario.
Can I use the Smart Start
®
SBI to control a load (e.g. fridge) without using an auxiliary
battery?
Yes. The voltage monitoring is done on the start battery side of the unit. If a load is connected on
the auxiliary side instead of a battery, the unit will still operate when the start battery is charged,
providing power to your load.
Can I use my Smart Start
®
SBI to winch off both batteries?
Yes. We recommend that the Smart Start
®
SBI be wired so it automatically connects both
batteries when the winch is turned on, through use of the Start Assist feature on the override
wire. We also recommend the use of our 200Amp Smart Start
®
SBI for this application.
Can I use the Smart Start
®
SBI on a positive chassis vehicle?
Yes. Please contact REDARC for further information.
