Honeywell MC-PAIH03 51304754-150

Description

Honeywell MC-PAIH03 51304754-150
The Low Level Multiplexer (LLMUX) processor provides an economical way to
bring in a large number of data acquisition signals. Each processor can handle 32
points, using two 16-point FTAs. Every point is scanned once per second with a one
second scan delay for processing. Open thermocouple detection is performed every 30
seconds for all points. Options for either local or remote cold junction reference are
available.
The Remote Hardened Multiplexer (RHMUX) processor provides functionality
similar to that of the LLMUX, but the two 16-input FTAs may be mounted up to 2 km
away from the xPM cabinet. Each FTA is mounted in its own NEMA-4 or -4X
enclosure, providing protection against precipitation, hosedown, and windblown dust.
The FTA itself is conformally coated, and is capable of operation in a GX “Severe”
corrosive environment and in the presence of condensing humidity.
Power for the RHMUX’s remote FTAs is provided by one of two power adapters,
which provide power limiting, serial data interfaces, and galvanic isolation. The power
adapter mounts in the FTA tray in the xPM cabinet, and provides the interface between
the IOP and the two remote FTAs. The Intrinsically Safe Power Adapter (ISPA) allows
the FTAs to be placed in Division 1 or Zone 0 environments. The Non-Incendive Power
Adapter (NIPA) provides an economical means to allow the remote FTAs to be placed
in Division 2 or Zone 1 environments.
Every point is scanned once per 4 seconds. Data is made available at the end of each
scan; there is no additional processing latency. Open-thermocouple detection (OTD) is
optionally performed on every measurement. If enabled, the OTD test is performed
immediately after the A/D conversion. If the test indicates an open thermocouple, data
from the just-completed conversion will not be propagated.
To prevent spurious ground paths from affecting readings, two levels of ground-fault
detection are performed: a low-sensitivity check on every measurement, and a highsensitivity check once per 4-second scan cycle.
All RHMUX remote FTAs are equipped with a local cold junction reference.
The RHMUX IOP is configured into the TPS PM system as a standard LLMUX. This
permits using the RHMUX in Release 300 and greater systems.
FM, CSA, KEMA, and EC approvals are pending for the RHMUX.
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TPS Process Manager I/O Honeywell Inc.
Specification and Technical Data
Smart Transmitter Multi-Variable Interface (STI-MV)
The Smart Transmitter Multivariable processor is the PM/APM/HPM’s digital interface
to Honeywell’s advanced series of smart transmitters.
Each STI-MV processor can communicate bidirectionally with up to 16 smart
transmitters, including:
• ST3000 Pressure Transmitters
• STT3000 Temperature Transmitters
• MagneW 3000 Magnetic Flowmeters
These transmitters are used for pressure, temperature, and flow measurement.
Each STI-MV processor also has the ability to accept up to four PVs each from the
following multivariable transmitters:
• SCM 3000 Coriolis flowmeter
• Drexelbrook SLT level transmitter
• SMV3000 Multivariable Pressure Transmitter
• SGC3000 Gas Chromatograph
Multivariable transmitters provide the high accuracy of a digital interface while
reducing wiring costs because multiple PVs are available over a single pair of wires.
Each IOP can accommodate DE inputs to a maximum of:
• 16 single PV inputs from Smartline transmitters
• Four multivariable field devices with up to four PVs each, or
• A mix of single and multivariable field devices that equals up to 16 inputs per IOP
(some restrictions apply)
The STI-MV Interface supports the functions for PV processing, EU conversion, and
alarming supported by the other analog input processors (see above). It also provides
Bad PV and Bad Database protection for added security.
All communications from the STI-MV processors to the Smart Transmitter are bitserial, bi-directional, using the Honeywell DE (digital enhanced) protocol.
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Honeywell Inc. TPS Process Manager I/O
Specification and Technical Data
An individual at a Universal Station can perform any of the following functions:
• Display primary and secondary Process Variables
• Display/Modify/Configure the transmitter database
• Re-range the transmitter
• Save/Restore the database
• Support calibration commands
• Display detailed transmitter status information
• Display the transmitter scratch pad, serial number, and revision level.
Enhanced digital accuracy is provided for all signals, resulting in accuracy that typically
is three times better than that of analog.
Serial Device Interface (SDI)
The Serial Device Interface processor provides connection to field devices that use
serial communications (EIA-232 or EIA-485). Inputs from these devices are mapped
into the I/O database and can be used directly for calculations and control. Since
communication is bi-directional, information such as target value or damping factors
can be written to or read from the field device. Specific serial devices are supported by
custom programmable modules.
One such device is the UDC 6000 Process Controller, which provides single-loop
remote display and control capability. Operating as a subsystem of the PM/APM/HPM
controller, the UDC 6000 displays PV, SP, and OP on front panel bar graphs. When
digitally integrated with the PM/APM/HPM, the UDC Controller can be configured for
the following modes:
• Manual/Auto (M/A) Station where all control resides in the PM, APM, or HPM.
• M/A Station with emergency backup control.
• Stand-alone control with the PM/APM/HPM as supervisor.
• Stand-alone control with remote SP from the PM, APM, or HPM.
Another device is the Toledo Weigh Cell (T8142), providing weight, setpoint control of
feed (fast cutoff) and rate of change alarming