Specifications

Specifications and Ordering Information
Part Number 162096-01
Rev. F (03/07)
Page 11 of 12
ensure that memory has not been corrupted by
comparing configuration information for agreement
and flagging any anomalies. The use of redundant,
non-volatile memory also allows the user to program
the module ahead of time for spare parts, and
ensures that, in the event a redundant power supply
is not used, monitor configuration is not lost when
power is interrupted and monitoring functions can
resume immediately upon reapplication of rack
power.
Skid Mounting
In many cases, the 3500 rack can be mounted on or
near the machine skid or local control panel, keeping
cable runs between the 3500 rack and the machine
shorter and less costly. Wired and wireless
communications and display options permit the
installation to make a single Ethernet connection
between the control room and 3500 rack. This also
permits installations to distribute display and other
information needed, whether to a process control
system or to an engineer’s desktop computer. The
result is a machinery protection system with
significantly lower installation costs than those that
must be mounted in only control room
environments. Optional NEMA 4 and NEMA 4X
weatherproof housings are available when
installations require field mounting of the 3500
System.
Remote Accessibility
Modem, WAN, or LAN connections allow the user to
remotely configure a 3500 system and even assess
the system when an instrument problem arises.
Users can implement simple changes, such as to an
alarm setpoint or a filter corner, without traveling to
site. This is ideal for such installations as offshore
platforms, compressor or pump stations, emergency
generators, and other locations where on-site
access to the instrumentation is inconvenient or
impractical.
Tamper-resistant Design
The 3500 System’s two levels of password protection
combined with a keylock for configuration changes
ensures the system can’t be adjusted, changed, or
configured except by those authorized to do so.
Users can document and control management of
change much more easily, and the 3500 rack
records any configuration changes in the system’s
event list.
Alarm/Event Lists
The 3500 System goes well beyond the capabilities
of previous systems to simply identify the first alarm
to occur in the rack via a “First Out” feature.
Extensive alarm and event lists retain the 1000 most
recent alarm and 400 most recent system events
(configuration changes, errors, etc.). The system’s
TDI/RIM retains the lists, which provide a description
of each alarm or event and a corresponding
date/time stamp. These lists are available to 3500
displays, 3500 Operator Display Software, and the
Communications Gateway module for export to
process control, historian, or other plant systems.
Time Synchronization
The system’s real-time clock can be synchronized
with external clocks, via the Communications
Gateway or via connected Bently Nevada software.
The 3500’s alarm and event lists then provide
time/date stamps that are synchronized with alarms
and events in other process and automation
equipment. This reduces or eliminates the need for
elaborate, hardwired “Sequence of Event” recorders.
API 670 Compliance
When configured properly, supplied with the correct
number of relay modules, and provided with an
appropriate optional display, the 3500 System fully
complies with the latest edition of the American
Petroleum Institute (API) Standard 670 for Machinery
Protection Systems, covering shaft-relative vibration,
axial position, temperature, reciprocating
compressor rod drop, tachometer, overspeed
detection, and casing vibration.
Hot Insertion
All modules and Power Supplies (when redundant
supplies are used) can be removed or inserted when
the rack is under power. This facilitates easier
maintenance and system expansion without
interruption of machinery protection functions or
system operation.
Note: Before removing an I/O module, the front-panel portion of
the module must first be removed. This removes power from the