Section
4-1
4 Level Controller Configuration
This section describes the tasks involved in configuring the Model 3095
Level Controller.
CONFIGURATION
OVERVIEW
Configuring the Level Controller consists of four major tasks:
1. Set Up the Level Calculation: These tasks set up the Level
Controller for the specific process, and include setting process
density, level units, controller height, and damping.
2. Configure the Controller: These tasks configure how you want to
control the liquid level process, and include setting range values,
control type, control action, ABC, output limits, setpoint, and
mode shed options.
3. Perform a Level Trim: This task automatically adjusts the
controller height and process density so that the actual level
measurement matches the observed tank level.
4. Tuning the Loop: These tasks set the gain, reset, rate and bias
parameters for the PID equation. The tasks differ depending on
whether or not you have purchased the Autotuning feature.
If you completed a Configuration Data Sheet and your Level Controller
is factory-configured, tasks 1 and 2 are done; you need only perform a
level trim and tune the loop.
NOTE
For bench configuration, a jumper must be installed across the output
terminals on the Level Controller terminal block. When bench
configuration is complete, remove the jumper before installing the
controller in the field.
You can use the Model 275 or any HART host device to configure the
Level Controller and perform the other configuration tasks.
The HART Comm. box to the left of each section identifies the
corresponding HART fast key sequence. See Appendix A: HART
Communicator for additional information.
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