Typical (and recommended) applications of the ADAPT ESD will use a triple modular
redundant architecture. In this configuration, each processor module physically
connects to an array of 32 input channels, 12 of which are configurable as discrete
inputs or 4-20 mA analog inputs, as well as two speed inputs. The Bently Nevada
Monitor Configuration software allows you to configure large combinations of
logic blocks in order to manage the system trip logic. This logic dictates how the
trip mechanisms for the system are driven.

The ADAPT ESD system can drive 12 independent trip relays. Of the 12 relays,
six of these signals can optionally be configured for two-out-of-three, (2oo3), voting.
In the 2oo3 arrangement, the system activates a relay only when any two of the three
CPU modules drive to trip. In independent mode, or one-out-of-one voting, any single
CPU that drives to trip will cause an assigned relay to activate on the corresponding
output card. For the highest safety, the system should be configured in “de energize
to trip”, or “normally energized” mode so that loss of power will not result in a machine
running unmonitored.
The evolution of our accelerometer sensors, velocity-sensing tools, pressure sensors,
and vibration sensors can be traced back to our velocity sensors.
These high-sensitivity units offer a self-generating moving-coil design used by geologists
to measure movement in the Earth’s crust. Today, we still refer to “seismic” sensors for
condition monitoring or general purpose in a nod to their origin.
These early sensors led to the introduction of different types of accelerometers,
including rugged solid-state piezoelectric accelerometers, ushering in today’s integrated
capacitive configurations that deploy signal processing circuitry for output signals using
velocity rather than acceleration.
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