Micromod Micro-DCI: 53SL5100B Single Loop Controller - Manual (Page 7)

53SL5100B Single-Loop Controller
INSTRUCTION MANUAL
1 INTRODUCTION
1.1 Product Overview
The 53SL5100 Controller is capable of functioning as any one of four selectable application-specific
instruments. The instrument application is selected with the front panel push buttons by entering the
appropriate number (1 through 4 respectively) into a designated database location. The four instrument
selections are:
1. Single Loop (PID) Controller - a PID controller that fulfills the requirements of a majority of process
applications. It is used with other devices in a standard feedback control loop to automatically control
a process variable (PV) at a predetermined setpoint (SP). The proportional, integral, and derivative
(PID) terms can be activated as needed.
2. Analog Backup Controller - for operations requiring computer backup. It is used where a remote
computer is normally controlling the final element directly. In this configuration, the controller acts as a
control signal selector and as an automatic backup to the computer. The controller continually adjusts
its output to match the feedback signal from the final element so that transfer to on-line operation is
bumpless.
3. Ratio (PID) Controller - for applications where one variable must automatically be maintained in
definite proportion to another variable. The PID algorithm is executed to maintain a controlled line at a
predetermined proportion to the uncontrolled or wild line.
4. Automatic/Manual Station - for installations requiring a single station automatic/manual selector. In
Auto, the Auto input is passed directly through the station to the output. In Manual, the station acts as
a manual loader for direct operator control of the process.
Each of the four instrument selections has its own unique display of process attributes (e.g., process variable,
output, etc.) as well as a supplemental parameter display that is invoked by pressing a front panel push
button. The parameter display provides quick access to view and/or alter three values such as % Proportional
Band, Reset (integral action), and Rate (derivative action). The instrument is configured at the factory to
display these three values, but the parameter display selections can be altered.
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