Wiring Sensors To Dry Contact Inputs - Phonetics Skymetry WTU-14 User Manual

Skymetry WTU-14 Manual
NOTE: Proper earth grounding of the Skymetry
WTU-14 is required for warranty coverage.
Ground rods can typically be found at local electrical supply houses
and/or hardware stores. You MUST contact your state "Call before
you dig" hotline at least two days before you install your ground
rod, to insure that it is safe to install the ground rod in a chosen
area.

Wiring Sensors to Dry Contact Inputs

The WTU-14 has 8 Dry Contact inputs that can be used to moni-
tor Normally Open (N.O.) or Normally Closed (N.C.) sensors. In
addition, they can also be used for pulse counting and equipment
run-time accumulation. When used for pulse count or run time
functions, the unit will count the pulse (or accumulate time) when
the input changes to the opposite of its normal state.
Dry contact sensors are wired to the terminals labeled D1 through
D8. The corresponding Ground terminals are located on the lower
level terminal strip. The input type is programmed within the
Skymetry Software.
WARNING: Do not use sensors, switches, or relays
that supply any voltage or current to the Skymetry
WTU-14.
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Figure 6: Grounding the Skymetry