Sensaphone SCADA 3000 Users manual - Manual (Page 270)

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SCADA 3000 User’s Manual
Figure 1: Module Mounting Dimensions
Power Supply and Grounding
The Analog Output Module operates on 10–15VDC. Typically the module is powered from
the AUX PWR terminals on the SCADA 3000 main unit. This is preferred because the AUX
PWR from the main unit is battery-backed in the event of a power failure, when a battery
is connected to the main unit. Alternately, you may connect the module to any 10–15VDC
power source.
Figure 2: Module powered from main unit
It is extremely important that the EG pin be connected to a good earth ground. This will pre-
vent communication errors due to differences in ground potential between modules in addition
to possible damage due to voltage transients and surges.