T4821000 Red Lion Controls, T4821000 Datasheet - Page 4

• Manufacturer Part Number: T4821000
• Description: Process/Temperature Controller
• Manufacturer: Red Lion Controls
• Type: Temperaturer

Specifications of T4821000

• Operating Temperature Max: 50°C
• Operating Temperature Min: 0°C
• Temperature Accuracy ±: 0.3%
• Output Voltage Max: 7VDC
• Output Voltage Min: 4V
• Controller Input: Thermocouple Or RTD
• Brand/series: T48 Series
• Current, Load: 1 A @ 35 °C (Max.)
• Dimensions: 49.5mmW×49.5mmH×115.3mmD
• Enclosure Rating: IP65
• Input Type: RTD/Thermocouple
• Ip Rating: IP65
• Memory: EEPROM
• Mounting Type: Panel
• Number Of Outputs: 1
• Output Type: Digital/SSR
• Power, Rating: 8 VA
• Primary Type: Controller
• Special Features: EEPROM
• Standards: cURus, CE
• Temperature, Ambient: 0 to +50 °C (Max.)
• Termination: Screw
• Voltage, Rating: 120⁄240 VAC
• Voltage, Supply: 85 to 250 VAC
• Panel Cutout: 1.77" × 1.77" (1⁄16 DIN)
• Power Requirements: 85-250 VAC
• Sealing: NEMA 4X/IP65
• Operating Temperature: 0°C to +50°C
• Thermocouple Type: J, K, T, E, R, S, B, N, Linear MV
• Rohs Compliant: NA
• Lead Free Status / RoHS Status: na

BASIC OPERATION
input probe, then calculating a control output power value by use of a modified
PID control algorithm. The unit controls the system with the new output power
value to keep the process temperature at setpoint. The PID control algorithm
incorporates features which provide for high control accuracy and low
temperature overshoot from process disturbances.
FRONT PANEL FEATURES
in the upper display. One of the following parameters can be viewed in the
lower display:
enabled, the control setpoint or power output (manual mode only) can be
directly modified in this mode.
and modified by use of the UP and DOWN buttons. Parameters are then entered
by the P button, which advances the user to the next parameter. Pressing the D
button immediately returns the controller to the normal operating mode without
changing the currently selected parameter.
HARDWARE FEATURES
process disturbance, thus providing excellent temperature control. Measurement
accuracy of 0.3% of span ±1°C or better, provides close process control
conforming to the desired control setpoint value. The T48 accepts a variety of
both thermocouple and RTD temperature probes. An output board contains the
Main Control output, Alarm 1 output, Alarm 2/Cooling output, and/or Linear
DC output. Since the controller is serviceable from the front of the panel, the
output board (on some models) may be easily changed or replaced without
disturbing the wiring behind the panel. No re-programming is required when
changing or replacing the output board for units without the Linear DC output
option. Units with the linear output option require calibration procedure for the
new linear output.
temperature control. The recommended two year re-calibration interval is easily
accomplished via the programming menu.
REMOTE SETPOINT INPUT
controller’s setpoint. The remote signal can be scaled independent to that of the
controller’s range. The controller’s response to local/remote setpoint transfers
can be programmed. Also, the remote signal is filtered by use of an adaptive
filter. With this filter, relatively large filtering time constants can be used
without suffering from long settling times. The time constant and filter disable
band are programmable. Additionally, the remote signal can also be velocity
limited (or ramped) to slow the controller’s response to changes in setpoint. This
results in a steady control response with no overshoot.
HEATER CURRENT MONITOR
valuable information regarding single phase heater system integrity. It is
especially useful on extruder and large oven applications where adjacent
controllers mask the effect of a failed heater. The heater break alarm senses two
types of heater system faults:
1) Main control output is “on” and heater current is below alarm value. This
2) Main control output is “off” and heater current is above 10% of alarm value.
LINEAR DC ANALOG OUTPUTS
update time and filter (damping) time. These parameters permit flexibility in
process configuration. The output can be set for 0 to 10 V, 0 to 20 mA or 4 to
20 mA ranges, and can be configured for control or for transmission of
temperature or setpoint values.
The T48 controls a process temperature by measuring the temperature via an
In the normal operating mode, the unit displays the process temperature
The user scrolls through these parameters by pressing the D button. If
In the normal operating mode, parameters are selected by use of the P button
A fast 100 msec input sampling rate provides quick controller response to a
Low-drift, highly stable circuitry ensures years of reliable and accurate
The remote setpoint input facilitates the use of a remote signal to drive the
The T48 provides a direct readout of process heater current. This provides
indicates failed heater or failed parts of heater, breaker trip, failed power
control device, etc.
This indicates a failed power control device, wiring fault, etc.
The Main Linear DC output has independent scaling, programmable output
- Setpoint
- % Power Output
- Temperature Deviation
- Heater Current
- Temperature symbol (F or C)
- Blank Display
4
temperature. The output can be scaled and converted independent of the input
and Main Linear DC output. This output is isolated from the input.
SETPOINT FEATURES
programming the setpoint range limit values. Additionally, safeguards from
inadvertent data entry can be programmed.
user input and/or through the front panel on selected models.
setpoint change is made, at a user programmable rate. This feature reduces
thermal shock to the process and helps to minimize temperature overshoot.
INPUT FEATURES
with varying or oscillating temperature characteristics, helping to provide better
temperature control. A programmable temperature shift function can be used to
compensate for probe errors or to have multiple T48 units indicate the same
nominal temperature.
such as auto/manual transfer of the controller, reset alarm output(s), transfer to
second setpoint, etc.
OUTPUT FEATURES
excessive power can cause damage. Automatic sensor probe break detection,
for fail-safe operation, causes the controller to default to a programmed output
power (upscale or downscale burnout). Programmable output cycle time,
output hysteresis and dampening can reduce output activity without degrading
control accuracy. The main outputs can operate in PID, ON/OFF, or manual
control modes.
CONTROL AND ALARM OUTPUTS
outputs.These outputs can be relay, logic, or triac for control or alarm purposes.
Relay outputs can switch user applied AC or DC voltages. Logic/SSR drive
outputs supply power to external SSR power units. One Logic/SSR Drive output
can control up to four SSR power units at one time. The Triac output supplies
one Amp of AC current for control of an external AC relay or triac device.
AUTO-TUNE
determines the PID control parameters for a particular thermal process. After
completion of auto-tune, the PID parameters are automatically optimized for
that process and loaded into non-volatile memory. The operator may view and
modify the parameters as desired.
process requirements. An auto-tune programmable dampening factor produces
various levels of process control and response characteristics.
RS485 Communications
on a single pair of wires with a distance of up to 4,000 feet and a maximum baud
rate of 9600. Since the same pair of wires are used for both transmit and receive,
only one way communication is possible at any given time. The controller has
a programmable response time to allow the host device adequate time to release
the communication line for a transmission.
output(s) may be reset by sending the proper command code via serial
communications. It is also possible to invoke Auto-tune through the serial port.
Serial communications used with SFCRM software allows for easy controller
parameter configuration by computer.
HEATING AND COOLING SYSTEMS
processes that require them. For example, many extruder applications require
both heating and cooling to maintain accurate extruder barrel and die
temperatures. The T48 is easily configured for these types of applications.
A Second Linear DC output is dedicated for retransmission of input
The controller setpoint can be protected from out of range values by
A second setpoint value can be programmed which can be made active by a
The setpoint ramp feature ramps the setpoint value at start-up or any time a
A programmable input filter can be used to stabilize readings from a process
The programmable User Input can be used to control a variety of functions,
Programmable output power limits provide protection for processes where
In addition to the Linear DC outputs, there are up to three types of ON/OFF
The T48 has an auto-tune feature which, on demand, automatically
Auto-tune may be invoked either at start-up or at setpoint, depending on the
The RS485 communications option allows the connection of up to 32 devices
Selected parameters from the T48 can be interrogated or changed, and alarm
The T48 is available with dual outputs to provide heating and cooling to those