Specifications

Specifications and Ordering Information
Part Number 162096-01
Rev. F (03/07)
Page 10 of 12
wireless communications, to completely blind
monitoring systems with an as-needed HMI (Human
Machine Interface) connection for configuration and
information. Multiple displays can be connected
concurrently without degrading system performance
or interrupting basic machinery protection functions.
Software Configurable
Virtually every aspect of the 3500’s operation is
software configurable, resulting in the most flexible
Bently Nevada monitoring system ever offered and
in easier spare parts management. Unlike previous
systems, a single 3500 module type can be
configured for a variety of functions rather than for
just a single function. The following list represents
just part of the 3500’s numerous configurable
options.
Transducer type and
scale factor
Normal thrust
direction toward or
away from probe
Alarm delays Trip Multiply factor
Transducer OK limits Filter corners
Full scale value Integration (velocity to
displacement,
acceleration to
velocity)
Engineering Units Recorder output
clamping value
Alarm Setpoints Timed OK / Channel
Defeat
enabled/disabled
Latching/non-latching
alarms
Proportional value
assigned to recorder
output
Normally energized or
de-energized relays
Relay voting logic
Density
The 3500 System can easily fit twice as many
channels into the same rack space as previous
monitoring systems. This results in lower installation
costs by saving valuable cabinet space and
spreading common components, such as displays,
communications gateways, and power supplies,
across more channels for lower per-channel costs.
Internal and External Terminations
Previous monitoring systems have always
incorporated field wiring connections on the back of
the rack. The 3500 System offers this conventional
approach with our internal termination option.
However, the 3500 system now offers an innovative
external termination option that allows field wiring to
go to external terminal blocks. These blocks can be
mounted where access is more convenient, such as
on a cabinet wall, and less congested than on the
back of each monitor module. The external terminal
block then connects to the monitor’s I/O module
using a single pre-engineered cable, resulting in
neater, more easily serviceable installations.
Conventional internal terminations is shown above,
where field wiring terminates directly to connections
on 3500 I/O modules.
(?)
Higher Integrity / Fault Tolerance
The 3500 System is the first system offered in the
Bently Nevada product line that the user can
configure with varying levels of redundancy. This
ranges from simplex modules to dual power supplies
to a full TMR (Triple Modular Redundant)
configuration in which monitor channels (and
optionally, transducers) can be triplicated participate
in a 2-out-of-3 voting scheme using special relays.
This allows the 3500 to be used in safety
instrumented applications that cannot tolerate false
and missed trips under any circumstances, whether
from a power supply, a monitor channel, or a
transducer or the result of electronic failure or
human error.
Even without redundancy, the 3500 system
represents the most reliable monitoring system we
have ever offered. It incorporates numerous self-
monitoring functions that can identify faults in the
monitor modules and their connected transducers,
annunciate and identify problems via appropriate
error codes, and suppress channel operation
automatically when a failure could compromise
correct operation of the system.
The 3500 System stores configuration in two
separate locations in each module’s non-volatile
memory. This redundancy allows the module to