General Connections
Connecting Power/Ground
The X20 has
5
power connection points,
four
of these are high current and can be connected to a
fused battery power or switched power source.
One
of them is Logic Switch / Ignition Switch power
and used to switch the power gate so that current is able to flow from the 4x High current 12v pins
into the Device.
If driving motors or solenoids which pull a lot of current then ensure the correct amount of pins are
connected. Each pin on the X20 is able to sink around 14 amps of current, so if driving multiple
solenoids that pulls 20+ amps total, ensure at
least
two high current 12v pins and two power ground
pins are used.
Internally
A8/A9
are linked, as well as
B1/B2
. These can either be used to provide extra current on a
supply, or as a way of providing switched power to additional loads through the loom.
Pin A2 (
Ignition Sw
) is for a 12v low current ignition switch supply to enable the power gate on the
X20 internally, this is required on all installations.
Power Grounds are joined internally and the X20 must have at least A33 and B26 connected. If driving
lots of Low Side outputs then connect A34 and B27 also to handle the current loading.
NOTE!
Power Grounds are designed to conduct High Current loads – Do not mix Power Grounds with Analogue
(AN) Grounds.
Example Schematic
Figure 0-1 - Power Feeds and a Common grounding point.
Pin Schedule
Pin Number
Function
Notes
A8
VBAT1
Use a fused 12v Switched feed.
MUST CONNECT
A9
VBAT1
Use a fused 12v Switched feed.
B1
VBAT2
Use a fused 12v Switched feed.
MUST CONNECT
B2
VBAT2
Use a fused 12v Switched feed.
A33
Power Ground
Shared Power Ground
A34
Power Ground
Shared Power Ground
B26
Power Ground
Shared Power Ground
B27
Power Ground
Shared Power Ground
A2
Power On
12v Ignition Switch – Logic Power
MUST CONNECT
