Red Lion TSC - Manual (Page 8)

GENERAL DESCRIPTION
The TSC is a setpoint controller suitable for time vs. temperature, process
control applications. The TSC accepts signals from a variety of temperature
sensors (thermocouple and RTD elements), precisely displays the process
temperature, and provides an accurate output control signal (time
proportional or linear) to maintain a process at the desired control point. A
comprehensive set of easy to use steps allows the controller to solve various
application requirements. The user input can be programmed to perform a
variety of controller functions.
Dual 4-digit displays allow viewing of the measured temperature value and
setpoint or temperature and profile status simultaneously. Front panel indicators
inform the operator of controller status and output states. Replaceable output
modules (Relay, Logic/SSR drive or Triac) can be fitted to the main control
output, alarm output(s) or timed event output(s), and cooling output.
The TSC has been designed to simplify the set-up and operation of a controlled
setpoint profile program. The setpoint program is easily entered and controlled
through the front panel. Full display capabilities keep the operator informed of the
process temperature, profile status, output states, and setpoint value.
The controller can operate in the standard PID control mode for both
heating or cooling, with on-demand Auto-Tune which establishes the PID
gain set. The PID gain set can be fine tuned by the operator at any time or may
be locked from further modification. The unit can be transferred to the manual
control mode providing the operator with direct control of the output.
The TSC features four programs or profile recipes, each with up to eight
ramp/soak segments, which can be easily stored and executed at any time. Longer
profiles can be achieved by linking one or more profiles together, creating a single
profile of up to 32 ramp/soak segments. Temperature profile conformity is
assured during either soak (hold) phases or both ramp and hold phases by an
adjustable error band parameter. The program repeat function cycles the profile
either a set number of times or continuously. Power-on options automatically
re-start, stop, or resume a running profile. The profile can be controlled via the
front panel buttons, the user input, or the serial communications option.
Four control points, each having a setpoint and PID parameter set, are
available for instant front panel implementation during batch changeover, or
other process conditions. A control point may have its PID gain set values
disabled when implementing the control point.
The optional RS-485 multidrop serial communications interface provides
the capability of two-way communication between a TSC unit and other
compatible equipment such as a printer, a programmable controller, or a host
computer. In multipoint applications the address number of each unit on the
line can be programmed from 0-99. Up to thirty two units can be installed on a
single pair of wires. The Setpoint value, % Output Power, Setpoint Ramp
Rate, etc. can be interrogated or changed, by sending the proper command
code via serial communications. Alarm output(s) may also be reset via the
serial communications interface option.
Optional alarm output(s) may be configured to operate as a timed event
output or as a standard alarm output. As an alarm output it may be configured
to activate according to a variety of actions (Absolute HI or LO, Deviation HI
or LO, or Band IN or OUT) with adjustable hysteresis. Also, a standby feature
suppresses the output(s) on power-up until the temperature stabilizes outside
the alarm region. Timed event output(s) allow the controller to activate other
equipment while a profile is running. Each profile can define up to 16 event
states (phases), for each output(s).
An optional secondary output is available for processes that require
cooling, which provides increased control accuracy and response.
The optional linear 4-20 mA or 0 to 10 VDC output signal is available to
interface with final actuators, chart recorders, indicators, or other controllers. The
outputsignalcanbedigitallyscaledandselectedtotransmitoneofthefollowing:
% Output Power Measurement Value Deviation
Measurement Value Setpoint Value
An optional NEMA 4X/IP65 rated bezel is available for washdown and/or
dirty environments, when properly installed. Modern surface-mount
technology, extensive testing, plus high immunity to noise interference,
makes the controller extremely reliable in industrial environments.
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