TT301 - Operation & Maintence Instruction Manual
3.8
PV, SP, MV and Error Readings – Provides real-time variable value.
SP Tracking – When in MANUAL, the setpoint follows the PV. When the controller is switched to
AUTO, the last PV value before the switch will be regarded as SP.
Control Action – This option configures the transmitter Operation Mode. The options are:
Direct – The output increases when the PV rises.
Reverse – The output decreases when the PV does.
Control Mode – Selects Automatic and Manual.
MV Configuration – Adjusts the manipulated variable.
SP Configuration – The Setpoint is adjusted.
Control Limits – This option switches the SP Power On to automatic, manual and last value.
Safety value – The output after a power shortage or during a failure.
Rate / Alteration – The maximum allowed output change.
Lower Limit – The minimum allowed percent output.
Upper Limit – The maximum allowed percent output.
Setpoint Table – When the setpoint generator is activated, the setpoint varies according to a curve
table. The time is always read in minutes and the setpoint in percentage.
SP Generator – When activated, the setpoint varies with time according to the schedule on
TABELA_SP table.
Monitoring - MONIT
This function monitors the transmitter 4 dynamic variables and the output current on the configurator
display simultaneously.
Process variable on the selected engineering unit.
Process variable percent.
Setpoint on the selected engineering unit.
Setpoint generator time in minutes.
Deviation between SP and PV percents.
Table 3.3 - Monitored Variables
The indications will always oscilate between the first and the second variable.
These items may only be selected on PID mode.
Set the first variable indication for PV percent and the second variable for current.
If the display should not indicate the oscillation, select the same indication in both variables, or select
“SEM” (“without”) on the second variable.
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