Lofa CANplus 600 Operation Manual - page 22
600 Control Panel Operation and Troubleshooting
22
463-3000-07 Initial - 24-Jul-2007
Battery Circuit Requirements
Warning
Improper wiring can cause electrical noise, unreliable operation and may damage the
control system or other components. All power connections must be free from foreign
materials, including paint, which may interfere with proper connection.
A reliable dedicated power circuit must be provided for the control system.
LOFA recommends the power connection be made directly to the battery.
Grounding through frame members is not recommended!
All circuit paths must be capable of carrying any likely fault currents without damage.
Do not reverse the battery polarity. Attempting to crank the engine when the polarity of the
battery connections is reversed may damage the control system.
Battery Positive Connection
The electronic control system operates on either a 12 VDC or 24 VDC electrical systems. The unswitched
battery positive connection to the control system is made at the weather proof connector. The control system
provides switched positive battery protected by solid-state MOSFETs. These outputs include integral
protection against overloads and short circuits.
An integral 40 AMP slow blow fuse protects the unswitched battery positive circuit. Powering the control
system through dedicated circuits reduces the possibility of system damage.
Warning
Disconnecting the battery while the engine is running may damage electrical components.
When using a battery disconnect switch, LOFA recommends using a
2 pole switch to disconnect both the battery and alternator output.
Note
A maximum of three ring terminals should be connected to
a power stud in order to ensure integrity of the connection.
The use of more than three terminals can cause the connection to become loose.
Voltage Drop
If control system voltage drops below 6 volts for more than one tenth of a second, the control system may
reset causing the self test to reactivate. Resetting the control system is equivalent to quickly turning the key
switch to off and back to run without starting the engine. Voltage drops can be caused by a discharged
battery, transients from external equipment, improper wire sizes, faulty wiring or nearby lightning strikes.