Redlion T48 User Manual

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4.17 (105.9)
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
PID CONTROL WITH REDUCED OVERSHOOT

ON DEMAND AUTO-TUNING OF PID CONTROL SETTINGS

NEMA 4X/IP65 BEZEL

DUAL LED DISPLAYS FOR SIMULTANEOUS INDICATION OF
TEMPERATURE AND SETPOINT

STATUS INDICATORS FOR OUTPUTS AND CONTROL MODES

ACCEPTS 10 TYPES OF SENSOR INPUTS (Thermocouple or RTD)

OPTIONAL HEATER CURRENT MONITOR AND HEATER BREAK
ALARM

OPTIONAL DUAL ALARM OUTPUTS

OPTIONAL TWO LINEAR DC OUTPUTS (0 to 10 V, 0/4 to 20 mA)

MANUAL/AUTOMATIC CONTROL MODES

SETPOINT RAMPING FOR PROCESS STARTUP

PROGRAMMABLE USER INPUT (Digital) FOR ADDED FLEXIBILITY

SENSOR ERROR COMPENSATION (Offset) AND BREAK
DETECTION

HEATING AND OPTIONAL COOLING OUTPUTS

PARAMETER SECURITY VIA PROGRAMMABLE LOCKOUTS

FIELD REPLACEABLE OUTPUT BOARD
(Relay or Logic/SSR Drive)

OPTIONAL TRIAC OUTPUT

SECOND SETPOINT SETTING

OPTIONAL REMOTE SETPOINT INPUT (0/4 to 20 mA)

OPTIONAL RS485 SERIAL COMMUNICATIONS

PC SOFTWARE AVAILABLE FOR CONTROLLER CONFIGURATION
DESCRIPTION
The T48 Controller accepts signals from a variety of temperature sensors
(thermocouple or RTD elements), precisely displays the process temperature,
and provides an accurate output control signal (time proportional or linear DC)
to maintain the process at the desired temperature. The controller’s
comprehensive yet simple programming allows it to meet a wide variety of
application requirements.
The controller operates in the PID control mode for both heating and cooling,
with on-demand auto-tune, which will establish the tuning constants. The PID
tuning constants may be fine-tuned by the operator at any time and then locked
out from further modification. The controller employs a unique overshoot
suppression feature, which allows the quickest response without excessive
overshoot. The unit can be transferred to operate in the manual mode, providing
the operator with direct control of the output. The controller may also be
programmed to operate in the ON/OFF control mode with adjustable hysteresis.
A second setpoint is available on select models to allow quick selection of a
different setpoint setting.
Dual 4-digit displays allow viewing of the process temperature and setpoint
simultaneously. Front panel indicators inform the operator of the controller and
output status. On many models the main control output and the alarm outputs
are field replaceable.
Optional alarm(s) can be configured to activate according to a variety of actions
(Absolute HI or LO, Deviation HI or LO, Band IN or OUT, and Heater Current
Break) with adjustable hysteresis. A standby feature suppresses the alarm during
power-up until the temperature stabilizes outside the alarm region. The second
alarm can be configured as a secondary PID output (heat/cool applications).
Optional Main Linear DC output (10 V or 20 mA) can be used for control or
temperature re-transmission purposes. Programmable output update time
reduces valve or actuator activity. The output range can be scaled independent
of the input range.
Optional Second Linear DC output (10 V or 20 mA) provides an independent
temperature re-transmission, while the main Linear DC output is being used for
control. The output range can be scaled independent of the input range.
Optional Heater Current Monitor provides a direct readout of process heater
current. An alarm can be programmed to signal when the heater has failed. This
provides early warning of system failure before product quality is affected.
MODEL T48 - 1/16 DIN TEMPERATURE CONTROLLER
DIMENSIONS In inches (mm)
PANEL CUT-OUT
CAUTION: Risk of Danger.
Read complete instructions prior to
installation and operation of the unit.
CAUTION: Risk of electric shock.
Bulletin No. T48-H
Drawing No. LP0332
Released 08/13
Tel +1 (717) 767-6511
Fax +1 (717) 764-0839
www.redlion.net
UL Recognized Component,
File # E156876

Redlion T48 Specifications

General

Brand	Redlion
Model	T48
Category	Controller
Language	English

Summary

Description

Dimensions

Safety Summary

Specifications

Display

Details about the dual 4-digit displays and LED indicators.

Power

Specifies AC and DC power requirements for the controller.

Controls

Describes the front panel push buttons and external input for parameter lockout.

Memory

Information on nonvolatile E2PROM retaining programmable parameters.

Main Sensor Input

Covers sample period, response time, and failed sensor response.

Thermocouple Input

Details types, impedance, and lead resistance effect for thermocouple inputs.

RTD Input

Explains RTD input types, resolution, and lead resistance.

Indication Accuracy

Specifies accuracy figures and conditions for temperature indication.

User Input

Describes the internal user input specifications and response time.

Control and Alarm Outputs

Details rating and life expectancy for relay, logic/SSR, and triac outputs.

Main Control

Covers PID/ON/OFF control, auto-tune, and probe break action.

Alarms

Lists available alarm modes and actions.

Cooling

Describes cooling control modes, output, cycle time, and gain adjustments.

Main and Second Linear DC Output

Specs for optional linear DC outputs, including range and update rate.

Remote Setpoint Input

Details remote setpoint input type, accuracy, reading rate, and filtering.

Heater Current Monitor Input

Covers input type, accuracy, and alarm modes for heater current monitoring.

Serial Communications

Specs for RS485 serial communication, baud rate, data format, and node address.

Environmental Conditions

Specifies operating/storage range, humidity, vibration, shock, and altitude.

Isolation Breakdown Ratings

Details isolation breakdown ratings for AC line and inputs/outputs.

Certifications and Compliances

Lists CE, RoHS, and UL certifications and compliances.

Connection

Describes the connection method using wire clamping screw terminals.

Construction

Details the case material, panel latch, bezel, and NEMA/IP ratings.

Weight

States the weight of the controller unit.

Controller Functionality Overview

Front Panel Features

Describes the displays and indicators visible on the controller's front panel.

Hardware Features

Details internal hardware aspects like sampling rate, accuracy, and output boards.

Remote Setpoint Input

Explains how to use a remote signal to control the controller's setpoint.

Heater Current Monitor

Describes the function of monitoring process heater current and detecting faults.

Linear DC Analog Outputs

Details the capabilities of the main and second linear DC analog outputs.

Setpoint Features

Discusses setpoint range limits, safeguards, and setpoint ramping.

Input Features

Covers programmable input filters and temperature shift functions.

Output Features

Explains output power limits, probe break detection, and cycle time settings.

Control and Alarm Outputs

Describes ON/OFF outputs (relay, logic, triac) and their functions.

Auto-Tune

Explains the auto-tune feature for automatically determining PID parameters.

RS485 Communications

Details the RS485 serial communication option for device connection.

Heating and Cooling Systems

Describes dual output configurations for heating and cooling applications.

Controller Programming

Unprotected Parameter Mode

Allows access to configuration parameters when program disable is inactive.

Protected Parameter Mode

Restricts access to configuration parameters without a proper access code.

Hidden Function Mode

Provides access to functions that can be individually locked out.

Configuration Parameter Mode

Groups programming steps for inputs, outputs, and alarms.

Accessories

Multiple Unit Stacking

Details methods for stacking multiple T48 units horizontally or vertically.

External SSR Power Unit

Describes the accessory SSR power unit for switching high current loads.

Current Transformer-50 A

Specifications for the 50A current transformer accessory for Heater Current Monitor.

Current Transformer-40 A

Specifications for the 40A current transformer accessory for Heater Current Monitor.

Applications

Plastics Extruder Application

Example of T48 controllers used in multi-zone plastics extruder temperature control.

OEM Paint Sprayer Application

Example of T48 controller used for maintaining optimum paint temperature.

Multiple Unit/Remote Setpoint Application

Example of T48 controllers used in a drying oven with remote setpoint transmission.

Ordering Information

Models Without RS485 and Linear DC Analog Output

Part number configurations for models lacking RS485 and linear DC analog outputs.

Models With RS485 or Linear DC Analog Output

Part number configurations for models with RS485 or linear DC analog outputs.

Accessories

Lists part numbers for various accessories like SSR units and current transformers.