Fusing; Grounding The Es Series Gateway Chassis - Sierra Wireless AirLink ES450 Hardware User's Manual

AirLink ES450 Hardware User Guide

Fusing

For DC installations, Sierra Wireless recommends fusing the power input using a 2.0 A
fast-acting fuse. Install the fuse on the positive line, as shown in

Grounding the ES Series Gateway Chassis

For DC installations (with a fixed "system" ground reference), Sierra Wireless
recommends always grounding the ES450 chassis or the mounting bracket to the system
ground reference. To ensure a good grounding reference, use a short wire with a gauge of
18 AWG or larger connected to one of the mounting holes with the screws and lock
washers provided in the supplied mounting kit.
Green
Pin 4
GPI/O
Optional:
Connect to switch, relay
or external device
Figure 3-3: DC power cable connections (Colors indicate DC cable wire colors.)
Table 3-2: Power Connector Pin and DC cable Wires
Pin Name
Cable Wire Color
1 Power
2 GND
Rev. 7 July 2019
ES450 gateway
Black
Associated DC Description
Red Main power supply for device
Black Main device ground
White
Pin 3
Ignition Sense
Red
Pin 1
Power
Pin 2
Ground
31
Figure 3-3 on page 31.
Ignition switch
or low voltage
disconnect device
2.0 A fast-acting
fuse
- +
Battery
Type
PWR
PWR
4116746