Specifications

Specifications and Ordering Information
Part Number 162096-01
Rev. F (03/07)
Page 3 of 12
The TDI and RIM supply “self monitoring” functions
both for themselves and for the rack, in addition to
those provided by the individual monitor, relay,
communications, and other modules. While the
TDI and RIM provide certain functions common to
the entire rack, neither is part of the critical
monitoring path and has no effect on the proper,
normal operation of the overall 3500 System or its
machinery protection functions.
The TDI and RIM provide 4 front-panel LEDs as
follows:
OK
Indicates that the Rack Interface Module and its I/O
modules are operating correctly.
TX/RX
Flashes at the rate that communications between
the RIM and other rack modules are occurring.
TM
Indicates when the rack is in the Trip Multiply mode.
CONFIG
OK
Indicates that any module in the rack is not
configured or has a configuration error; that the
stored configuration of the Rack Interface Module
does not match the physical configuration of the
rack; or that a security option condition was not
met.
System configuration is secured by means of a
keylock switch on the front of the TDI/RIM
and two levels of software password
protection, preventing unauthorized
changes to or tampering with the
configuration. Both the TDI and the RIM
can be connected to a portable
computer via a front-panel serial
communications port for local changes
to configuration. The RIM can also be
permanently connected to a
configuration workstation via a rear
panel serial communications port, or to a
remote computer via an optional modem
I/O module. The TDI provides permanent
system connectivity via Ethernet ports.
The TDI/RIM provides a front-panel DIP
switch that permits the user to assign a
unique rack address when multiple 3500
racks are networked with one another.
The TDI/RIM provides a system reset switch on the
front panel, allowing the user to clear any latched
alarms in the system as well as latched NOT OK
conditions. An I/O module provides a set of rear-
panel connections as well, allowing users to
remotely activate this switch.
For Triple Modular Redundant (TMR) applications,
the 3500 System requires a TMR version of the
TDI/RIM (refer to the TMR section of this datasheet
for additional information).
Notes:
1. 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 machinery auto-shutdown circuit and should be used for
general annunciation purposes only.
Monitors
Table 1 summarizes available monitor types in the
3500 System. Each monitor occupies a single slot in
the rack. All monitors are microprocessor-based and
offer digitally adjustable Alert and Danger setpoints
for each channel
1
. Users can configure alarms for
latching or non-latching operation. Status
indications for each monitor and channel are
provided with bright, front-panel LEDs, allowing
observation without operator interaction for easy
and convenient operation. Most monitors provide
independent 4 to 20 mA proportional outputs for
each channel of the I/O module for connection to
strip chart recorders or for older process control
systems that do not support a digital interface.
Where applicable, the monitor’s I/O modules provide
transducers with appropriate power via short-
circuit-protected terminals. OK detection routines
within each monitor continuously check the integrity
of each transducer and the associated field wiring.
Transducer input signals are buffered and sent to
front-panel coaxial connectors
2
. Buffered output
terminals are also available upon request on the rear
of the TDI/RIM’s I/O module.