SMAR TT301, Operation, Maintenance & Instruction Manual

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TT301 - Operation & Maintence Instruction Manual
3.4
MULTIDROP
– The user may track the equipments connected to the loop, thus detecting their
respective addresses. Also, an address is designated to each device to be connected to the
network.
Identification and Manufacturing Data
– Info
The main information on the transmitter may be obtained here. They are: Tag, Description, Message,
Date and Single Identification. There is also a screen with important additional information on the
equipment. They are: Manufacturer, Type of equipment, Serial Number and Transmitter Firmware
Version, HART protocol Version and Hardware Revision.
The following information are available for the TT301 transmitter identification and manufacturer data:

TAG
– Field with 8 alphanumerical characters for transmitter identification;

DESCRIPTION
– Field with 16 alphanumerical characters for additional transmitter identification;

MESSAGE
– Field with 32 alphanumerical characters for any other information, such as the name
of the last person to calibrate, some special caution to be observed or if a ladder is needed to
access the transmitter, for example.

MODIFICATION DATE
– The date may be used to identify a relevant date, as the last calibration,
the next calibration or installation. The date is stored in the form of bytes, where DD = [1,..31],
MM = [1..12], AA = [0..255] and the effective year is calculated by [ year = 1900 + AA];

UNIQUE ID* - Information for reading only.
*NOTE
This item may not be modified.
Configurator - Conf
This function affects the transmitter 4-20 mA output and display reading. It may alter the lower and
upper burnout, select the variables to be displayed and verify the status of writing protection.
Burnout
–
The burnout may occur when the sensor reading is out of range or the sensor is open. In
this case, the transmitter may be adjusted for maximum output limit at 21 mA, by configuring it on the
upper value, or the minimum limit at 3.6 mA configured on the lower value.
Calibration
– Range
The Lower and the Upper Values are calibrated in this operational range, which also selects the unit
representing the process variable and the transmitter damping.
Maintenance - Maint
The maintenance option offers the user 5 choices to check his loop functionality, such as: restart the
equipment, test the current loop, verify the number of configurations performed, configure passwords
and verify the equipment order code. Below is a brief description of the characteristics
performed by the equipment Maintenance function:
Device Reset
–
The equipment is switched off and then on. The restarting option should be carried out
as a last resort, as it may destabilize the process control.
Loop Test
–
The current output may be adjusted to any desired value between 3.8 and 21.0 mA
regardless of the input value. There are a few stable current values for the loop test. The options
available are: 4, 8, 16 or 20 mA.
Operation Counter: The operation number counting is useful to indicate if somebody altered any
configuration on the equipment. Every time one of the parameters below is altered, the respective
alteration counter is activated. The monitored parameters are:

Range configuration (Lower/Upper)

Change to Constant Current

4 mA Trim

20 mA Trim

Sensor Trim