CCpilot V1000/V1200
Revision: 1.0
Technical Manual
2022-04-01
www.crosscontrol.com
11
4.2.2.
External fuse
To prevent cable fire in case of short circuit, an external fuse must always be used when
powering the device from a high current capable power source, for example a vehicle battery.
•
The fuse shall be located as close to the battery/power source as practically possible. A
recommendation is to place the fuse at a maximum distance of 15 cm (6 inches) from the
(+) terminal of the source.
•
Fuse rating shall be dimensioned with respect to wire gauge, maximum current
consumption and the inrush current of the device. Refer to chapter 8.1 for fuse rating
details.
•
As a guideline, a slow acting fuse with 2-3 A current rating should be used.
•
Remember to also apply fusing for the on/off control wiring, see chapter 4.2.4.
4.2.3.
External key switch signal
The device’s key switch signal should be connected to the positive supply line via the vehicle’s
ignition key switch.
•
The wire gauge for the key switch signal shall be dimensioned to handle the total switch
current and the fuse type and rating shall be selected to prevent cable fire in case of
cabling short circuit.
•
As a guideline, a slow acting fuse in the range of 100-500 mA for the key switch signal
should be sufficient for most practically usable wire gauge.
4.2.4.
Application example
Below is an application example schematic of the CCpilot V1000/V1200 power supply
connection.
If the system has a main switch for completely disconnecting the battery (S1 in schematic
below), the device’s power supply and key switch signal shall be connected after the main
switch.
It is
not
recommended to disconnect the battery without shutting down the device first - since
doing so will immediately switch off all internal voltages, regardless of ongoing operations. Any
information which was not saved to flash memory will be lost when disconnecting the battery.
However, no physical damage will be caused to the device by disconnecting the battery.
