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66 Micro Motion
®
Model 2200S Transmitters
Integrating the Meter with the Control System
Effects of mA output fault action on transmitter behavior
If the transmitter is operating near the limit of its power requirement:
• And mA Fault Action is set to Upscale, if a fault occurs, the upscale (>20 mA) fault level may
cause the transmitter to oscillate between the A031 alarm (low power) and a no-alarm state.
• And mA Fault Action is set to Downscale, if a fault occurs, power to the transmitter may fall
below the transmitter's minimum requirements, causing the transmitter to shut down. When
sufficient power is restored, the transmitter will spontaneously restart.
If the power supply to the transmitter is within the ranges specified in the transmitter installation
manual, these conditions should not occur.
mA output fault action delay
By default, the transmitter immediately performs the mA fault action when a fault is encountered. You
can delay the mA fault action by changing LMV Timeout. See Section 5.3.2.
Fault indication with the mA output
Depending on your process and control system, you may be able to use the mA fault action as a fault
indicator. If you choose to do this, be sure that your control system recognizes the configured fault
value as a fault.
If mA Fault Action is set to None, make sure that a fault detection method is in place, e.g., checking
status via digital communications.
Configuration
To configure the mA output fault action and fault value:
• Using the Communicator, select
Detailed Setup > Config Outputs > Channel Setup >
AO Setup
.
• Using ProLink II, click
ProLink > Configuration > Analog Output.
Note: You cannot configure fault action and fault value with the display.
6.3 Configuring digital communications
The digital communications parameters control how the transmitter will communicate using digital
communications. The following digital communications parameters can be configured:
• Digital Communications Fault Action
• HART Address
• Software Tag (HART tag)
• Loop Current Mode
•Burst Mode
• PV, SV, TV, and QV assignments
Note: See Section 3.3 for information on setting the HART address and the software tag.