Fusing; Dc Voltage Transients; Power Connector On The Mp70 - Sierra Wireless AirLink MP70 Hardware User's Manual

Table 2-2: Power Connector Pin and DC Cable Wires
Pin Name
Cable Wire Color
1 Power
2 Ground
Rev 4 Nov.16

Fusing

For DC installations, Sierra Wireless recommends fusing the power input using a
7.5 A, fast blow fuse, recommended to have no more than +/- 10% de-rating over
the operating temperature range.

DC Voltage Transients

The AirLink MP70 has built-in protection against vehicle transients including
engine cranking (down to 5.0V) and load dump, so there is no need for external
power conditioning circuits. For details, see
page 32.

Power Connector on the MP70

Green
Pin 4
GPIO
For I/O information,
see page 19.
Figure 2-4: DC Power Cable Connections (Colors indicate DC cable wire colors.)
Associated DC Description
Red Main power supply for device
Note: If you want to turn the MP70 on/off using a control line,
such as a vehicle ignition line, Sierra Wireless strongly recom-
mends that you connect the control/ignition line to Pin 3 and
apply continuous power on Pin 1.
Black Main device ground
Black
Pin 2
Ground
For more information, see wiring diagrams on
15
Installation and Startup
Industry Certification for Vehicles
White
Pin 3
Ignition
Sense
Red
Pin 1
Power
page 17.
on
Type
PWR
PWR
4119008