Monico CDL Gateway Installation And Operation Manual page 5

v1.05
6.26.09
CAUTION
Reversing wire polarity may cause damage to your Gateway. This damage is not
covered by warranty. If in doubt about which wire is which on your power supply,
check with a meter.
t is very important that the power supply is mounted
If you must use an external power supply, i
correctly if the unit is to operate reliably. Please take care to observe the following points:
– The power supply must be mounted close to the unit, with usually not more than 6 feet (1.8
m) of cable between the supply and the Gateway. Ideally, the shortest length possible should
be used. The wire used to connect the Gateway's power supply should be at least 22-gage
wire. If a longer cable run is used, a heavier gage wire should be used. The routing of the
cable should be kept away from large contactors, inverters, and other devices which may
generate significant electrical noise.
– A power supply with a Class 2 or SELV rating is to be used. A Class 2 or SELV power
supply provides isolation to accessible circuits from hazardous voltage levels generated by a
mains power supply due to single faults. SELV is an acronym for "safety extra-low voltage."
Safety extra low voltage circuits shall exhibit voltages safe to touch both under normal
operating conditions and after a single fault, such as a breakdown of a layer of basic
insulation or after the failure of a single component has occurred.
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