Specifications

Specifications and Ordering Information
Part Number 162096-01
Rev. F (03/07)
Page 5 of 12
Notes:
1. In addition to the direct measurement made by the monitor,
many channel types provide an enhanced data set consisting of a
variety of proportional values that will depend on the monitor type
and its configuration. For example, for a radial vibration channel
this includes the basic overall (direct) vibration amplitude as well as
gap voltage, 1X filtered amplitude, 1X filtered phase, 2X filtered
amplitude, 2X filtered phase, NOT 1X amplitude, and Smax. These
additional proportional values are provided for each channel, and
ALERT alarm setpoints can be established on each proportional
value, as desired. DANGER alarm setpoints can be established on
any two proportional values returned from each channel.
2. 3500/60, /62, and /63 monitor types do not provide front-panel
buffered output connectors.
3. Only standard differential expansion capabilities provided. For
ramp differential expansion and complementary input differential
expansion, use the 3500/45 Position Monitor instead.
4. The 3500/42M provides individual 4 to 20 mA proportional
outputs for each channel. The 3500/40M does not provide 4 to 20
mA outputs.
5. The monitor channels are programmed in pairs and can perform
up to two of these functions at a time. Channels 1 and 2 can
perform one function, while channels 3 and 4 perform another (or
the same) function.
6. Channels configured for velocity or acceleration provide only
direct amplitude. Channels configured for Velocity II or Acceleration
II provide 1X amplitude/phase and 2X amplitude/phase in addition
to direct amplitude.
7. Any vibration channel can be configured for conventional “pie-
shaped” acceptance region alarms. When configured for circular
acceptance regions, circular, rather than pie-shaped, acceptance
region alarms can be enabled. Refer to the 3500/42M
Operations/Maintenance Manual for additional information, or
contact your nearest sales professional.
8. Contact the factory or your local sales professional for details.
9. Only channels 3 and 4 can be used for Case Expansion
measurements.
10. The 3500/46M provides frequency response characteristics
suitable for use on machines with very slow rotational speeds, such
as hydraulic turbine/generator sets, which often operate at speeds
of 100 RPM or lower. Also, special signal conditioning and tracking
filtering is provided, allowing detection of rough load zone
operation, shear pin failure, and other hydro-specific conditions.
11. The 3500/50 is not intended for use in overspeed protection
applications. Use the 3500/53 instead.
12. Zero speed functionality requires both channels of the 3500/50
module, making it a single-channel monitor.
13. The 3500/53 is a single channel module, intended for use as
part of a 1-out-of-2 or 2-out-of-3 (recommended) overspeed
detection system.
14. The 3500/60 and 3500/61 provide identical functions except the
3500/60 does not provide 4 to 20 mA proportional outputs. When
these outputs are required, use the 3500/61.
15. The 3500/62 is designed to accept static proportional signals
such as 4 to 20 mA, 1 to 5 Vdc, or any static proportional signal
between –10 and +10 Vdc. When dynamic signals (i.e., those where
waveform information is required) are used, a 3500/40M or
3500/42M can often be programmed as a custom channel type to
such signals, making the 3500 system compatible with virtually any
static or dynamic signal from pressure, level, temperature, vibration,
flow, position, speed, or other transducers. Consult the factory or
your local Bently Nevada sales professional for more information.
16. The 3500/64M is primarily intended for monitoring combustor
pressure pulsation instabilities (“humming”) in gas turbines.
Relays
1
The 3500/32 Relay Module provides four
double-pole, double throw (DPDT) relays that
can actuate based on alarm conditions within
3500 monitor modules. The configuration
software allows the user to program various
combinations of alarms, ranging from an
individual channel’s ALERT or DANGER status,
to highly complex Boolean expressions that
combine two or more channel statuses to
provide special AND or OR voting. By adding
the desired number of relay modules, the user
can provide individual contacts for each
channel, alarm type, and group of channels
for global alarm annunciation.
The 3500/34 TMR Relay Module works in
conjunction with a special TMR Rack Interface
Module and three monitor modules to provide
2-out-of-3 voting for inputs.
Relays are epoxy-sealed and installed arc
suppressors are standard. Users can program
relays for either normally energized or
normally de-energized operation.
The 3500 Rack also supplies a common
system OK relay
2
in addition to any alarm relays in the
rack. This relay is located in the TDI/RIM’s I/O module
and is connected to the OK circuits of all modules in
the rack. These circuits monitor the operating
condition of each module. Any fault in the module, its
transducers, or associated transducer field wiring will
be annunciated by the OK relay. This relay is a single-
pole, double-throw (SPDT) type and is normally
energized, providing added capability of annunciation
in the event of primary power loss.
Notes:
1. Although not a required component of the 3500 System, we
strongly recommend relays as the appropriate way to interconnect
the 3500 System in auto-shutdown applications. Analog (e.g. 4 to 20
mA) and digital (e.g. Modbus*) connections are intended for operator
annunciation and trending purposes and do not provide the fault
tolerance or integrity necessary for highly reliable machinery
shutdown purposes.
2. Dozens of possible event conditions within the rack can drive the
NOT OK relay. For this reason, it is not intended for use as part of a