Fixed Installation - Sierra Wireless AirLink MP70 Hardware User's Manual

AirLink MP70 Hardware User Guide
Rev 4 Nov.16
Engine compartment
- +
Battery
Ignition
Vehicle firewall
Figure 2-6: Alternate Vehicle Installation
• Pin 1 (Power) —Use the red wire in the DC cable to connect Pin 1 to the
power source. Include a 7.5 A, fast blow fuse, recommended to have no more
than +/- 10% de-rating over the operating temperature range, in the input
power line. Sierra Wireless recommends using a continuous (unswitched) DC
power source.
• Pin 2 (Ground)—Use the black wire in the DC cable to connect Pin 2 to
ground. See also Step 2—Mount and Ground the MP70 Chassis
• Pin 3 (Ignition Sense)—Connected to power
• Pin 4 (I/O)—Connected to ignition

Fixed Installation

For fixed installations, connect the wires as shown in the figure below. You can
configure Low voltage disconnect to force the router into Standby mode when the
voltage is low.
7.5 A Fuse
DC power source
Figure 2-7: Fixed Installation without I/O
• Pin 1 (Power) —Use the red wire in the DC cable to connect Pin 1 to the
power source. Include a 7.5 A, fast blow fuse, recommended to have no more
than +/- 10% de-rating over the operating temperature range, in the input
power line. Sierra Wireless recommends using a continuous (unswitched) DC
power source.
• Pin 2 (Ground)—Use the black wire in the DC cable to connect Pin 2 to
ground. See also Step 2—Mount and Ground the MP70 Chassis
18
Vehicle cabin
Vehicle fuse box
7.5 A Fuse
1
Power
3
Ignition Sense
4
I/O
2
Ground
MP70 router
MP70 router
1
Power
3
Ignition Sense
4
I/O
2
Ground
on page 11.
on page 11.
4119008