MODEL TCU - TEMPERATURE CONTROL UNIT

MODEL TCU - TEMPERATURE CONTROL UNIT
MODEL TCU - TEMPERATURE CONTROL UNIT
SELF-DIAGNOSTICS
FULL PID CONTROL WITH REDUCED OVERSHOOT
OPTIONAL RS485 SERIAL COMMUNICATIONS INTERFACE
OPTIONAL DUAL ALARM OUTPUTS (USES OUTPUT MODULES)
OPTIONAL COOLING OUTPUT (USES OUTPUT MODULE)
OPTIONAL LINEAR 4 to 20 mA or 0 to 10 VDC OUTPUT FOR
CONTROL OR TEMPERATURE RE-TRANSMISSION
OPTIONAL HEATER CURRENT MONITOR AND BREAK ALARM
OPTIONAL MOTORIZED VALVE POSITION CONTROL AND
VALVE FAIL ALARM
OPTIONAL SECOND ANALOG INPUT FOR REMOTE SETPOINT
AND CASCADE CONTROL
UL
C
R
OPTIONAL NEMA 4X/IP65 SEALED FRONT BEZEL
STATUS INDICATORS FOR OUTPUTS AND CONTROL MODES
US LISTED
PROGRAMMABLE USER INPUT (DIGITAL) FOR ADDED
FLEXIBILITY
IND. CONT. EQ.
51EB
100 msec SAMPLING PERIOD WITH 0.15% ACCURACY
ON DEMAND AUTO-TUNING OF PID CONTROL SETTINGS
DUAL LED DISPLAYS FOR SIMULTANEOUS INDICATION OF
TEMPERATURE AND SETPOINT, SECOND ANALOG INPUT OR
HEATER CURRENT
ACCEPTS 10 DIFFERENT TYPES OF SENSOR INPUTS
(Thermocouple or RTD)
SENSOR ERROR COMPENSATION (Slope and Offset) AND
BREAK DETECTION
MANUAL/AUTOMATIC AND LOCAL/REMOTE SETPOINT
CONTROL MODES
SETPOINT RAMPING FOR PROCESS STARTUP
PARAMETER SECURITY VIA PROGRAMMABLE LOCKOUTS
FIELD REPLACEABLE AND INTERCHANGEABLE OUTPUT
MODULES (Relay, Logic/SSR Drive and Triac)
DESCRIPTION
F
The TCU 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) 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 controller can operate 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.
DIMENSIONS In inches (mm)
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. Replaceable and interchangeable output modules (relay, SSR
drive, or triac) can be installed for the main control output, alarm output(s) and
cooling output.
Optional dual alarms can be configured to activate according to a variety of
actions (Absolute HI or LO, Deviation HI or LO, Band IN or OUT, Heater
Break and Valve Fail Detect) with adjustable hysteresis. A standby feature
suppresses the output during power-up until the temperature stabilizes outside
the alarm region. An optional secondary output is available (for processes that
require cooling) which provides increased control accuracy and response.
Note: Recommended minimum clearance (behind the panel) for mounting clip installation is 5.5" (140) H x 2.1" (53.4) W.
PANEL CUT-OUT
574
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DESCRIPTION (Cont’d)
OPTIONS
A linear 4 to 20 mA or 0 to 10 VDC output signal is available to interface
with actuators, chart recorders, indicators, or other controllers. The output signal
can be digitally scaled and selected to transmit one of the following: % output
power, process temperature value, process temperature value deviation or
setpoint value. For Linear DC control applications, the adjustable output
demand dampening, output deadband and output update time parameters
expand the versatility of the TCU with final control devices.
The optional Heater Current Monitor serves as a digital ammeter for heater
current monitoring. Current transformer accessory (CT005001), is required. An
alarm event output can be programmed to signal when the heater or heater
control devices have failed, before damage to process material occurs. The
Heater Break alarm triggers under two conditions:
1) The main output (OP1) is “on” and the heater current is below the heater
current alarm value, indicating an aged or failed heater.
2) Output (OP1) is “off” and the heater current is more than 10% of the alarm
value, indicating a shorted heater control device or other problem.
The optional Motorized Valve Positioner directly controls the position of a
valve by the use of twin outputs (open and close) to control the direction of
motor rotation. The motor position defines the opening position of the valve.
Two control modes are possible: position control, which makes use of the
slidewire feedback signal supplied with the positioner and velocity control, in
which no slidewire feedback signal is used. Parameters are provided to adjust
the operation of the valve. These include:
Valve activity hysteresis
Valve update time
Variable control dampening
Slidewire signal fail action
Adjustable valve position limits.
The valve positioner TCU achieves tight process control, yet minimizes
unnecessary valve activity. An alarm event output or display alarm can be
programmed under loss of slidewire feedback or under valve fail detection.
The optional Second Analog Input (0-20 mA DC) can be configured as a
remote setpoint signal or as a secondary process signal. Configuration of the
second analog input as a remote setpoint signal allows ratio control, master
setpoint/multiple slave operation, and the ability to cascade the TCU with
another controller (external cascade). Configuration of the second input as a
secondary process signal allows operation as a two-process cascade controller
within a single unit (internal cascade). In either control mode, parameters are
provided to scale, configure, communicate and monitor the activity of both
analog inputs. A square law linearizer function can be used to linearize signals
derived from flow transmitters.
The optional RS485 multidrop serial communication interface provides twoway communication between a TCU 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.
An optional NEMA 4X/IP65 rated bezel is available for wash down 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.
All safety related regulations, local codes and instructions that appear in the
manual or on equipment must be observed to ensure personal safety and to
prevent damage to either the instrument or equipment connected to it. If
equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.
Do not use the TCU to directly command motors, valves, or other actuators
not equipped with safeguards. To do so, can be potentially harmful to persons
or equipment in the event of a fault to the unit. An independent and redundant
temperature limit indicator with alarm outputs is strongly recommended. Red
Lion Controls model IMT (thermocouple) or model IMR (RTD) units may be
used for this purpose. The indicators should have input sensors and AC power
feeds independent from other equipment.
SPECIFICATIONS
1. DISPLAY: Dual 4-digit
Upper Temperature Display: 0.4" (10.2 mm) high red LED
Lower Auxiliary Display: 0.3" (7.6 mm) high green LED
Display Messages (Model dependent):
-
Appears
Appears
Appears
Appears
when
when
when
when
measurement exceeds + sensor range.
measurement exceeds - sensor range.
open sensor is detected.
shorted sensor is detected (RTD only)
-
Appears
Appears
Appears
Appears
when
when
when
when
display values exceed + display range.
display values exceed - display range.
loss of slidewire signal is detected.
valve actuator error is detected.
2. POWER: 115/230 VAC (+10%, -15%) no observable line variation effect, 48
to 62 Hz, 10 VA, switch selectable
3. ANNUNCIATORS:
LED Backlight Status Indicators (Model dependent):
%PW
DEV
OP1
AL1
AL2
OP2
OPN
CLS
CUR
SEC
MAN
REM
- Lower auxiliary display shows power output in (%).
- Lower auxiliary display shows deviation (error)
from temperature setpoint.
- Main control output is active.
- Alarm #1 is active.
- Alarm #2 is active (for Dual Alarm Option).
- Cooling output is active (for Cooling Option).
- Valve positioner OPEN output is active
(for Valve Positioner option).
- Valve positioner CLOSE output is active
(for Valve Positioner option).
- Lower auxiliary display shows heater current
(for Heater Current Monitor option).
- Lower auxiliary display shows second analog input
(For Second Analog Input option).
- Flashing: Controller is in manual mode.
- ON: controller is in remote setpoint mode
(Second Analog Input option).
- OFF: controller is in local setpoint mode
(Second Analog Input option).
- Flashing: controller is in Manual control mode
(Second Analog Input optional).
4. CONTROLS: Four front panel push buttons for modifying and setup of
controller functions and one external input for parameter lockout or other
functions.
5. MAIN SENSOR INPUT:
Sample Period: 100 msec
Response Time: 300 msec (to within 99% of final value w/step input;
typically, response is limited to response time of probe)
Failed Sensor Response:
Main Control Output(s): Programmable preset output
Display: “OPEN”
Alarms: Upscale drive
DC Linear: Programmable preset output
Normal Mode Rejection: 40 dB @ 50/60 Hz (improves with increased
digital filtering.
Common Mode Rejection: 100 dB, DC to 60 Hz
Protection: Input overload 120 VAC for 30 seconds.
6. THERMOCOUPLE:
Types: T, E, J, K, R, S, B, N, Linear mV
Input Impedance: 20 M Ω all types
Lead resistance effect: 20 μV/350 Ω
Cold junction compensation: Less than ±1°C error over 0 - 50°C ambient
temperature range. Disabled for Linear mV type.
Resolution: 1°C/F all types, or 0.1°C/F for T, E, J, K, and N only.
7. RTD: 2, 3 or 4 wire, 100 Ω platinum, alpha = 0.00385 (DIN 43760),
alpha = 0.003916
Excitation: 0.175 mA
Resolution: 1 or 0.1 degree
Lead Resistance: 7 Ω maximum
TC TYPE
SAFETY SUMMARY
“OLOL”
“ULUL”
“OPEN”
“SHrt”
“....”
“-...”
“SLid”
“VALV”
T
E
J
K
R
S
B
N
mV
RTD
(385)
RTD
(392)
OHMS
1-717-767-6511
RANGE
ACCURACY
-200 to +400°C
-328 to +752°F
-200 to 750°C
-328 to +1382°F
-200 to +760°C
-328 to +1400°F
-200 to +1250°C
-328 to +2282°F
0 to +1768°C
+32 to +3214°F
0 to +1768°C
+32 to +3214°F
+200 to +1820°C
+300 to +3308°F
-200 to +1300°C
-328 to +2372°F
-5.00 to 56.00
-200 to +600°C
-328 to +1100°F
-200 to +600°C
-328 to +1100°F
1.0 to 320.0
0.20% + 1.5°C
0.20% + 2.7°F
0.20% + 1.5°C
0.20% + 2.7°F
0.15% + 1.5°C
0.15% + 2.7°F
0.20% + 1.5°C
0.20% + 2.7°F
0.15% + 2.5°C
0.15% + 4.5°F
0.15% + 2.5°C
0.15% + 4.5°F
0.15% + 2.5°C
0.15% + 4.5°F
0.20% + 1.5°C
0.20% + 2.5°F
0.15% + 1 LSD
0.10% + 0.5°C
0.10% + 0.9°F
0.10% + 0.5°C
0.10% + 0.9°F
0.15% + 1 LSD
WIRE COLOR
(ANSI)
F
blue
violet
white
yellow
black
black
grey
orange
__
__
__
__
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F
8. RANGE AND ACCURACY:
Errors include NIST conformity and A/D conversion errors at 23°C after 20
min. warm-up. Thermocouple errors include cold junction effect. Errors are
expressed as ±percent of reading and ± 3/4 LSD unless otherwise noted.
9. OUTPUT MODULES [Optional] (For All Output Channels):
Relay:
Type: Form-C (Form-A with some models. See Ordering Information.)
Rating: 5 Amps @ 120/240 VAC or 28 VDC (resistive load), 1/8 HP @
120 VAC (inductive load)
Life Expectancy: 100,000 cycles at max. load rating. (Decreasing load
and/or increasing cycle time, increases life expectancy).
Logic/SSR Drive: Can drive multiple SSR Power Units.
Type: Non-isolated switched DC, 12 VDC typical
Drive: 45 mA max.
Triac:
Type: Isolated, Zero Crossing Detection
Rating:
Voltage: 120/240 VAC
Max. Load Current: 1 Amp @ 35°C
0.75 Amp @ 50°C
Min. Load Current: 10 mA max.
Offstate Leakage Current: 7mA max. @ 60 Hz
Operating Frequency: 20 to 400 Hz
Protection: Internal Transient Snubber, Fused
10. MAIN CONTROL OUTPUT (Heating or Cooling):
Control: PID or ON/OFF
Output: Time proportioning or linear DC
Hardware: Plug-in, replaceable output modules
Cycle time: Programmable
Auto-tune: When selected, sets proportional band, integral time, and
derivative time values.
Probe Break Action: Programmable
11 . COOLING OUTPUT (Optional):
Control: PID or ON/OFF
Output: Time proportioning or linear DC
Hardware: Plug-in, replaceable output modules
Cycle time: Programmable
Proportional Gain Adjust: Programmable
Heat/Cool Deadband Overlap: Programmable
12. LINEAR DC OUTPUT (Optional): With digital scale and offset,
programmable deadband and update time.
4 to 20 mA:
Resolution: 1 part in 3500 typ.
Accuracy: ±(0.1% of reading + 25 μA)
Compliance: 10 V (500 Ω max. loop impedance)
0 to 10 VDC:
Resolution: 1 part in 3500 typ.
Accuracy: ±(0.1% of reading + 35 mV)
Min. Load Resistance: 10 KΩ (1 mA max.)
Source: % output power, setpoint, deviation, or temperature
(Available for heat or cool, but not both.)
13. HEATER CURRENT MONITOR (Optional):
Type: Single phase, full wave monitoring of load currents controlled by main
output (OP1)
Input: 100 mA AC output from current transformer RLC part number
CT005001 or any current transformer with 100 mA AC output
Display Scale Range: 1.0 to 999.9 amperes or 100.0%
Input resistance: 5 Ω
Accuracy: 1% of full scale ±1 LSD (10 to 100% of range)
Frequency: 50 to 400 Hz
Alarm mode: Dual acting; heater element fail detect and control device fail
detect
Overload: 200 mA (steady state)
Min. output “on” time for Heater break alarm detect: 400 msec
14. MOTORIZED VALVE POSITIONER (Optional):
Two Outputs: Valve open and valve close or Linear DC (optional)
Hardware: Plug-in, replaceable output modules
Three Inputs: Slidewire feedback, signal fail detect (Isolated from main
input)
Slidewire Resistance: 100 to 100 KΩ
Slidewire Exciting Voltage: 0.9 VDC
Slidewire Fail Action: programmable
Control Mode: Position mode (with slidewire) and velocity mode (w/o
slidewire).
Control Deadband: 1% to 25.0% (position mode)
0.1 to 25.0 seconds (velocity mode)
576
Update Time: 1 to 250 seconds
Motor Time (open, close): 1 to 9999 seconds
Position Limits: Adjustable 0.0 to 100.0% of valve stroke
Valve Fail Time: Off to 9999 seconds
Alarm mode: Dual acting; loss of slidewire feedback signal and valve fail
detection
15. SECOND ANALOG INPUT:
Range: 0 to 20 mA (Isolated from main input)
Overload: 100 mA (steady state)
Input Resistance: 10 Ω
Voltage Drop (@ 20 mA): 0.2 V
Accuracy: 0.15% of reading ±10 μA ±1 LSD
Scale Range: -999 to 9999
16. SERIAL COMMUNICATION:
Type: RS485 Multi-point, Balanced Interface
Communication Format:
Baud Rate: Programmable from 300 to 9600
Parity: Programmable for odd, even, or no parity
Frame: 1 start bit, 7 data bits, 1 or no parity bit, 1 stop bit
Unit Address: Programmable from 0 to 99, max. of 32 units per line
Transmit Delay: 100 msec min., 200 msec max.
RS485 Common: Isolated from signal input common
Auto Print Time: Off to 9999 seconds between print-outs
17. USER INPUT (Optional): Internally pulled up to +5 VDC.
VIN MAX = 5.25 VDC, VIL = 0.85 VMAX; VIH = 3.0 VMIN,
Available on all second input (HCM, MVP & ANA) models, and on models
with RS485.
Response Time: 100 msec max.
Functions: Program Lock
Integral Action Lock
Auto/Manual Mode Select
Setpoint Ramp Select
Reset Alarms
Print Request
Local/Remote Setpoint Select
18. ALARMS (Optional):
Hardware: Plug-in, replaceable output module
Modes: Absolute high acting
Absolute low acting
Deviation high acting
Deviation low acting
Inside band acting
Heater break
Valve fail
Second Analog Input monitoring
Reset Action: Programmable; automatic or latched
Standby Mode: Programmable; enable or disable
Hysteresis: Programmable
Probe Break Action: Upscale
Annunciator: LED backlight for “AL1”, “AL2”, (Alarm #2 not available
with cooling output or motorized valve position option.)
19. ENVIRONMENTAL CONDITIONS:
Operating Temperature Range: 0 to 50°C
Storage Temperature Range: -40 to 80°C
Span Drift (maximum): 100 ppm/°C, main input; 150 ppm/°C, second input
Operating and Storage Humidity:
85% max. (non-condensing) from 0 to 50°C
Zero Drift (maximum): 1 μV/°C, main input;2 μA/°C, second input
Altitude: Up to 2000 meters
20. ISOLATION BREAKDOWN RATINGS:
All inputs and outputs with respect to AC line: 2300 V
Analog Outputs, Second Analog Input, Heater Current Input or
Slidewire Input with respect to main input: 500 V
21. CERTIFICATIONS AND COMPLIANCES:
SAFETY
UL Listed, File #E137808, UL508, CSA C22.2 No. 14-M95
LISTED by Und. Lab. Inc. to U.S. and Canadian safety standards
UL Recognized Component, File #E156876, UL873, CSA 22.2 No. 24
Recognized to U.S. and Canadian requirements under the Component
Recognition Program of Underwriters Laboratories, Inc.
Type 2 or 4X Enclosure rating (Face only), UL50
IECEE CB Scheme Test Certificate # UL1239-156876/USA,
CB Scheme Test Report # 96ME50279-070794
Issued by Underwriters Laboratories, Inc.
IEC 1010-1, EN 61010-1: Safety requirements for electrical equipment
for measurement, control, and laboratory use, Part 1.
IP65 Enclosure rating (Face only), IEC 529
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ELECTROMAGNETIC COMPATIBILITY
Immunity to EN 50082-2
Electrostatic discharge
EN 61000-4-2
Electromagnetic RF fields
EN 61000-4-3
Fast transients (burst)
EN 61000-4-4
RF conducted interference
EN 61000-4-6
Emissions to EN 50081-2
RF interference
EN 55011
Level 2; 4 Kv contact
Level 3; 8 Kv air
Level 3; 10 V/m1
80 MHz - 1 GHz
Level 4; 2 Kv I/O
Level 3; 2 Kv power
150 KHz - 80 MHz
Enclosure class A
Power mains class A
Notes:
1. Self-recoverable loss of performance during EMI disturbance at 10 V/m:
Analog output signal, Heater Current Monitor input and Motorized
Valve Positioner input signal may deviate during EMI disturbance.
For operation without loss of performance:
Install power line filter, RLC #LFIL0000 or equivalent.
2. Self-recoverable loss of performance during EMI disturbance at 10 Vrms:
Analog output signal may deviate during EMI disturbance.
For operation without loss of performance:
a. Install power line filter, RLC #LFIL0000 or equivalent.
b. Install 1 ferrite core 1 turn, RLC #FCOR0000 or equivalent, to
cable at unit.
Refer to the EMC Installation Guidelines section of the manual for additional
information.
22. CONNECTION: Jaw-type terminal block
Wire Range: 12-30 AWG copper wire
Torque: 5-7 inch-lbs (56-79 N-cm)
23. CONSTRUCTION: NEMA 2 For Standard Models.
Front Panel: Flame and scratch resistant tinted plastic
Case: High impact black plastic. (Mounting collar included)
NEMA 4X/IP65 model only: Sealed bezel utilizing two captive mounting
screws (panel gasket included). This unit is rated for NEMA 4X/IP65
indoor use. Installation Category II, Pollution Degree 2
24. WEIGHT: 1.3 lbs (0.6 kgs)
entered by the PAR button, which advances the user to the next parameter.
Pressing the DSP button immediately returns the controller to the normal
operating mode when making a parameter change. The controller’s
configuration and parameter settings are stored in an internal E2PROM device.
HARDWARE FEATURES
The fast 100 msec input sampling rate provides quick controller response to a
process disturbance, thus providing excellent temperature control. Measurement
accuracy of 0.15% or better, provides closer process control conforming to the
desired control setpoint value. One model accepts a variety of both thermocouple
or RTD temperature probes. The AC input power is switch selectable, allowing
the unit to operate from either 115 VAC or 230 VAC. Since the controller is
serviceable from the front of the panel, the output modules may be easily changed
or replaced without disturbing the wiring behind the panel. No re-programming is
required when changing or replacing modules.
The optional NEMA 4X/IP65 rated model utilizes two bezel securing screws
and a neoprene gasket to guarantee a water tight seal, when properly installed.
The standard model simply requires pressing a latch to remove the unit.
Low-drift, highly stable circuitry ensures years of reliable and accurate
temperature control. The recommended two-year re-calibration interval is easily
accomplished via the programming menu.
SETPOINT FEATURES
The controller setpoint can be protected from out of range values by
programming the setpoint range limit values. Additionally, safeguards from
inadvertent data entry can be programmed.
The setpoint ramp feature ramps the setpoint value at start-up or any time a
setpoint change is made, at a user programmable rate. This feature reduces
thermal shock to the process and helps to minimize temperature overshoot.The
setpoint may also be transmitted by the optional linear DC output for slave
control loops.
The second analog input may be configured as a remote setpoint. As such, the
controller is easily switched from local/remote setpoint operation via the front
panel or user input. Ratio and bias parameters provide on-line scaling of the
remote setpoint. Absolute limit values and maximum rate of change of the
remote setpoint further enhance controller flexibility.
INPUT FEATURES
ACCESSORIES:
External SSR Power Unit:
Switched Voltage Range: 50 to 280 VAC (Nominal: 240 VAC)
Load Current: 45 Amps @ 25°C ambient temperature
35 Amps @ 50°C ambient temperature
On State Input: 3 to 32 VDC @ 1500 Ω impedance. (isolated)
(Use Logic/SSR drive output module.)
Off State Input: 0.0 to 1.0 VDC
Size: 5.5" (14 cm) L x 4.75" (12 cm) W x 2.62" (6.6 cm) H
Current Transformer:
Current Ratio: 50:0.1 (Amperes)
Accuracy: ±5.0%
Operating Frequency: 50 to 400 Hz
Insulation Class: 0.6 Kv BIL 10 Kv full wave
Terminals: Brass studs No. 8-36, (flat washer, washer, nut)
Weight: 8.0 oz (226 g)
Approvals: UL recognized component
A programmable input filter can be used to stabilize readings from a process
with varying or oscillating temperature characteristics, helping to provide better
temperature control. A programmable temperature shift and slope function can
be used to compensate for probe errors or to have multiple TCU units indicate
the same nominal temperature.
The programmable User Input can be used to control a variety of functions,
such as auto/manual transfer of the controller, reset alarm output(s), etc.
The second analog input has independent scaling parameters to match the
units of other processes or transmitters, or to match the controller’s range.
OUTPUT FEATURES
BASIC OPERATION
The TCU controls a process temperature by measuring the temperature via an
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 normal operating mode, the unit will display the process temperature
in the upper display. One of six other parameters can be viewed in the lower
display:
- Setpoint
- % Power Output
- Temperature Deviation
- Heater Current
- Second Input Process Value
- Temperature Symbol (F or C)
Programmable output power limits provide protection for processes where
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). With adjustable time proportioningcycle time, and programmable DC linear output, the controller can satisfy a
wide variety of output requirements.
Programmable dampening output hysteresis and output update time parameters
can dramatically reduce actuator activity without degrading control accuracy.
The RS485 Communication option allows the user to access various
controller parameters such as the setpoint, % output power, % proportional
band, etc. The controller may be setup to transmit various parameters at a
programmable automatic print rate.
F
AUTO-TUNE
The TCU has an auto-tune feature which, on demand, automatically
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 nonvolatile memory. The operator may view and
modify the parameters as desired.
Auto-tune may be invoked either at start-up or at setpoint, depending on the
process requirements. An auto-tune programmable dampening factor produces
various levels of process control and response characteristics.
The six parameters can be scrolled through by pressing the DSP button. If
enabled, the control setpoint or power output (manual mode only) can be
directly modified in this mode.
In the normal operating mode, parameters are selected by use of the PAR
button and modified by use of the UP and DOWN buttons. Parameters are then
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OPTIONS
INTERNAL CASCADE
HEATING AND COOLING CONTROL
The TCU has dual outputs for providing heating and cooling to those
processes that require them. Many extruder applications require both heating
and cooling to maintain accurate extruder barrel and die temperatures. The TCU
is easily configured for these applications.
Cooling Configuration Parameters
“CYC2”
“GAN2”
“db-2”
- Enter cooling time proportioning cycle time
- Enter cooling relative gain
- Enter heat/cool deadband or overlap
HEATER CURRENT MONITOR
Cascade control allows the process to be divided into two control loops: the
primary control loop and the secondary control loop. The secondary loop
receives it’s setpoint from the primary loop to control an intermediate variable
(steam pressure). The control level of the intermediate variable is the input to
the primary process. The primary loop (temperature) controller maintains loop
regulation by manipulating the setpoint of the secondary controller. The
setpoint of the secondary controller, in turn, changes the intermediate variable.
The secondary loop can react faster to disturbances of the intermediate variable,
thereby minimizing the effects to the primary control loop. Control loops
cascaded in such a manner provide greater control quality than would be
possible with single loop control. A single TCU can accomplish two-process
cascade control.
Internal Cascade Configuration Parameters
“OPer”
“root”
“dPt2”
“dSP1”
“INP1”
“dSP2”
“INP2”
“OPd2”
-
Select cascade mode
Select second input square root linearization
Select second input decimal point
Enter scaling units of second input
Enter scaling units of second input
Enter scaling units of second input
Enter scaling units of second input
Output dampening of secondary
Internal Cascade Operational Parameters
The Heater Current Monitor serves as a heater element fail sentry, so
operators can take corrective action before significant process errors occur in
the event of a failure. The actual heater current can be viewed in the secondary
display and/or a heater break alarm output can be programmed.
Heater Current Monitor Configuration Parameters
“HCur”
ACt1”, “ACt2”
“SP-2”
“Pb-2”
“It-2”
“dt-2”
-
View secondary setpoint value
Enter secondary proportional band
Enter secondary integral time
Enter secondary derivative time
EXTERNAL CASCADE
- Enter full scale current of current transformer
- Program alarm(s) as heater break alarm
MOTORIZED VALVE POSITIONER
F
The motorized valve positioner controls the position of a valve directly, by use
of “open” and “close” control outputs. The slidewire feedback signals of the valve
may optionally be connected to the controller. Alternatively, the controller may be
configured for linear input valve control using the 4 to 20 mA DC output.
Motorized Valve Positioner Configuration Parameters
578
Position mode:
“VPS1”
“VPS2”
“VUdt”
“VPdb”
“VFAL”
“Act1”
-
Enter or measure valve closed position
Enter or measure valve open position
Enter Valve update time
Enter valve control deadband
Enter valve fail detect time
Program alarm as valve fail output
Velocity mode:
“VUdt”
“VOPt”
“VCLt”
“VONt”
-
Enter Valve update time
Enter valve open time
Enter valve close time
Enter valve control deadband
(minimum on time)
Similar to internal cascade control, external cascade control differs by the
employment of two controllers, one of which is equipped with a second analog
input configured as a remote setpoint. A PCU controls the secondary loop, while
a TCU controls the primary loop.
External Cascade Configuration Parameters
“OPEr”
“root”
“dPt2”
“dSP1”
“INP1”
“dSP2”
“INP2”
“SPtr”
-
Select ratio mode
Select second input square root linearization
Select second input decimal point
Enter scaling units of second input
Enter scaling units of second input
Enter scaling units of second input
Enter scaling units of second input
Local/Remote select options
External Cascade Operational Parameters
“rtio”
“bIAS”
- Remote setpoint ratio
- Remote setpoint bias
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SETPOINT MASTER CONTROL
Setpoint Master Control allows automatic setpoint changes to slave
controller units (up to 50 units total) from a master TCU controller.
The linear DC output of the master is looped with the second analog
input of the slave TCU controllers. Each slave unit can have unique
remote setpoint ratio and bias values.
Setpoint Slave Configuration Parameters
“OPEr” - Select remote setpoint mode
“root” - Select second input square root
Linearization
“dPt2” - Select second input decimal point
“dSP1” - Enter scaling units of second input
“INP1” - Enter scaling units of second input
“dSP2” - Enter scaling units of second input
“INP2” - Enter scaling units of second input
“SPLO”
- Limit range of remote setpoint
“SPHI”
“SPrP” - Limit rate of change of remote
setpoint
Setpoint Slave Operational Parameters
“rtio”
“bIAS”
- Second input ratio
- Second input bias
CONTROLLER PROGRAMMING
Configuration 1, Inputs
“tYPE”
“SCAL”
“dCPt”
“FLtr”
“SPAN”
“SHFt”
“SPLO”
“SPHI”
“SPrP”
“InPt”
“HCur”
The TCU has been designed to reduce the operator interaction with the
controller while still maintaining a high degree of control accuracy and user
flexibility. Front Panel Program Disable allows all of the controller’s set-ups to be
locked-out from further operator intervention after the initial parameter set-up.
The programming of the controller is divided into four sections:
Unprotected Parameter Mode
Configuration Parameter Mode
Protected Parameter Mode
Hidden Function Mode
These four programming modes allow the controller to adapt to any required
user-interface level.
*
-
“Pb-2”
-
“It-2”
-
“dt-2”
-
“AL-1”
“AL-2”
“CNFP”
“End”
-
Enter Setpoint
Enter output power
Enter proportional band
Enter integral time
Enter derivative time
Enter Remote Setpoint ratio value
Enter Remote Setpoint bias value
View internal cascade secondary setpoint
demand
Enter internal cascade, secondary
proportional band
Enter internal cascade, secondary integral
time
Enter internal cascade, secondary
derivative time
Enter value for alarm #1
Enter value for alarm #2
Select basic configuration mode
Return to normal display mode
“CYCt”
“OPAC”
“OPLO”
“OPHI”
“OPFL”
“OPdP”
“CHYS”
“tcod”
“ANAS”
“ANLO”
“ANHI”
“ANdb”
“ANUt”
-
Enter time proportioning cycle time
Select control action
Enter output power low limit
Enter output power high limit
Enter probe fail power preset
Enter output control dampening
Enter ON/OFF control hysteresis
Select auto-tuning dampening
Select linear DC output assignment *
Enter linear DC output low scaling value *
Enter linear DC output high scaling value *
Enter linear DC output control deadband *
Enter linear DC output update time *
Configuration 3, Parameter lock-outs
“SP”
“OP”
“dEv”
“IN-2”
“HCur”
“UdSP”
“CodE”
“PId”
“PId2”
“rtbS”
“AL”
“ALrS”
“SPSL”
“trnF”
“tUNE”
These parameters may not appear due to option configuration or other
programming.
CONFIGURATION PARAMETER MODE
The configuration parameter mode allows the operator to set-up the basic
requirements of the controller. It is divided into sections which group together
related programming steps, such as inputs, outputs, alarms, etc. Upon
completion of each section, the program returns to the configuration selection
stage allowing the user to return to the normal display mode.
Select input probe type
Select temperature scale
Select temperature resolution
Select level of input filtering
Enter input correction span (slope)
Enter input correction shift (offset)
Enter setpoint lower limit
Enter setpoint higher limit
Enter setpoint ramp rate
Select user input function *
Enter full scale heater current *
Configuration 2, Outputs
UNPROTECTED PARAMETER MODE *
The unprotected parameter mode is accessible when program disable is
inactive or when the proper access code number from the protected mode is
entered.The configuration parameter modes can be accessed only from this mode.
“SP”
“OP”
“ProP”
“Intt”
“dErt”
“rtio”
“bIAS”
“SP-2”
-
-
Configuration 4, Alarms
“Act1”
“rSt1”
“Stb1”
“AL-1”
“Act2”
“rSt2”
“Stb2”
“AL-2”
“AHYS”
-
Select degree of setpoint access
Select degree of power access
Enable deviation display *
Enable second input display *
Enable heater current display
Enable temperature scale display
Enter parameter access code
Select degree of PID access
Select degree of secondary PID access *
Select degree of ratio/bias access *
Select degree of alarm access *
Enable alarm reset access *
Enable local/remote setpoint selection *
Enable auto/manual mode selection
Enable auto-tune invocation
F
*
Select operation mode of alarm #1
Select reset mode of alarm #1
Enable activation delay of alarm #1
Enter value for alarm #1
Select operation mode of alarm #2
Select reset mode of alarm #2
Enable activation delay of alarm #2
Enter value for alarm #2
Enter hysteresis value for both alarms
Configuration 5, Cooling
*
“CYC2” - Enter cooling time proportioning cycle time
“GAN2” - Enter cooling relative gain
“db-2” - Enter heat/cool deadband or overlap
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Configuration 6, Serial Communications
“bAUd”
“PArb”
“Addr”
“Abrv”
“PrAt”
“PoPt”
-
*
Select baud rate
Select parity bit
Enter unit address number
Select abbreviated or full mnemonic
transmissions
- Enter automatic print rate
- Select parameters to be included in print-out
Configuration 7, Second Input
Configuration 8, Motorized Valve Positioner
Velocity mode:
“VPS1”
“VPS2”
“VUdt”
“VPdb”
“VFAL”
“VUdt”
“VOPt”
“VCLt”
“VONt”
-
The hidden function mode is accessible from the normal operating mode. The
four functions in this mode may be locked-out individually in configuration 3
parameter lock-out section.
“SPSL” - Select Local/Remote Setpoint
“trnF” - Transfer between automatic (PID) control
and manual control
“tUNE” - Invoke/cancel PID Auto-tune
“ALrS” - Reset latched alarms
*
“OPEr” - Select remote setpoint or internal
cascade mode
“root” - Select second input square root linearization
“dPt2” - Select second input decimal point
“dSP1” - Enter scaling parameters of second input
“INP1” - Enter scaling parameters of second input
“dSP2” - Enter scaling parameters of second input
“INP2” - Enter scaling parameters of second input
“SPtr” - Enter local/remote select options
“OPd2” - Enter Secondary output control dampening
Position mode:
HIDDEN FUNCTION MODE *
PROTECTED PARAMETERS MODE *
The protected parameters mode is enabled when program disable is active.
This mode prevents access to the configuration modes without the proper access
code number. Only the parameters that are selected in the configuration 3
parameter lock-out section can be accessed.
*
Enter or measure valve closed position
Enter or measure valve open position
Enter valve update time
Enter valve control deadband
Enter valve fail detect time
Enter valve update time
Enter valve open time
Enter valve close time
Enter valve control deadband
(minimum on time)
“ProP”
“Intt”
“dErt”
“rtio”
“bIAS”
“SP-2”
“Pb-2”
-
“It-2”
-
“dt-2”
-
“AL-1” “AL-2” “CodE” -
*
Enter Proportional band
Enter integral time
Enter derivative time
Enter remote setpoint ratio value
Enter remote setpoint bias value
Enter internal cascade, secondary setpoint
Enter internal cascade, secondary
proportional band
Enter internal cascade, secondary
integral time
Enter internal cascade, secondary
derivative time
Enter value for alarm #1
Enter value for alarm #2
Enter access value to unprotected
parameters & configuration parameters
These parameters may not appear due to option configuration or other
programming.
ACCESSORY - EXTERNAL SSR POWER UNIT
ACCESSORY - CURRENT TRANSFORMER
The external SSR Power Unit is used with the Logic/SSR Drive Module
(OMD00003) to switch loads up to 240 VAC @ 45 amps, 25°C ambient.
The unit is operated by applying a low level DC control signal to the
isolated input. The unit features zero cross detection circuits which reduces
radiated RFI when switching load currents. With no contacts to wear out,
the SSR Power Unit provides virtually limitless operational life. The unit is
supplied with an integral heat sink for immediate installation.
The external Current Transformer is used when specifying TCUs
equipped with the Heater Current Monitor. The primary current rating is 50
amperes.
F
580
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OUTPUT MODULES
TYPICAL CONNECTIONS
Relay:
Type: Form-C (Form-A with some models. See ordering information.)
Rating: 5 amps @ 120/240 VAC or 28 VDC (resistive load), 1/8 HP @ 120
VAC (inductive).
Life Expectancy: 100,000 cycles at maximum load rating.
(Decreasing load and/or increasing cycle time, increases life expectancy).
Triac:
Type: Isolated, Zero Crossing Detection
Rating:
Voltage: 120/240 VAC
Max. Load Current: 1 ampere @ 35°C
0.75 ampere @ 50°C
Min. Load Current: 10 mA
Off State Leakage Current: 7 mA max. @ 60 Hz
Operating Frequency: 20 to 400 Hz
Protection: Internal Transient Snubber, Fused
Logic/SSR Drive: Can drive multiple SSR Power Units.
Type: Non-isolated switched DC, 12 VDC typical
Drive: 45 mA maximum.
APPLICATION
Several TCU controllers are
employed to control the temperature of
a plastics extruder. Each TCU controls
a heating element and a cooling water
solenoid to maintain each extruder
zone at a desired temperature. The
heater current monitor of the TCU is
used for early detection of heater
element failure. The linear DC output
is used to retransmit the process
temperature to a control computer for
data logging purposes.
F
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ORDERING INFORMATION
MODELS WITHOUT SECOND INPUT OPTIONS
4 to 20 mA
ANALOG
OUTPUT
NEMA 4X/P65
BEZEL
0 to 10 VDC
ANALOG
OUTPUT
ALARM
OUTPUTS
COOLING
OUTPUT
RS485 COM
PART NUMBER
115/230 VAC
NO
NO
NO
NO
NO
NO
TCU00000
NO
NO
NO
2
NO
NO
TCU00001
NO
NO
NO
1
YES
NO
TCU00002
NO
YES
NO
2
NO
NO
TCU01001
NO
YES
NO
2
NO
YES
TCU01004
NO
YES
NO
1
YES
YES
TCU01005
YES
NO
NO
NO
NO
NO
TCU10000
YES
NO
NO
2
NO
NO
TCU10001
YES
NO
NO
1
YES
NO
TCU10002
YES
YES
NO
2
NO
NO
TCU11001
YES
YES
NO
1
YES
NO
TCU11002
YES
YES
NO
2
NO
YES
TCU11004
YES
YES
NO
1
YES
YES
TCU11005
YES
NO
YES
2
NO
NO
TCU12001
YES
NO
YES
2
NO
YES
TCU12004
YES
NO
YES
1
YES
YES
TCU12005
These models have dual alarm outputs, or single alarm with cooling outputs, with shared common terminals (Form A Type).
As a result, these outputs should be fitted with the same type of output module. The main output (OP1) may be fitted with
any type of output module.
HEATER CURRENT MONITOR MODELS (HCM)
NEMA 4X/IP65
BEZEL
4 to 20 mA
ANALOG
OUTPUT
0 to 10 VDC
ANALOG
OUTPUT
ALARM
OUTPUTS
COOLING
OUTPUT
RS485 COM
PART NUMBER
YES
NO
NO
2
NO
YES
TCU10204
YES
YES
NO
2
NO
NO
TCU11208
These models have dual alarm outputs, or single alarm with cooling outputs, with shared common
terminals (Form A Type). As a result, these outputs should be fitted with the same type of output
module. The main output (OP1) may be fitted with any type of output module.
SECOND ANALOG INPUT MODELS (ANA)
NEMA 4X/IP65
BEZEL
4 to 20 mA
ANALOG
OUTPUT
0 to 10 VDC
ANALOG
OUTPUT
ALARM
OUTPUTS
COOLING
OUTPUT
RS485 COM
PART NUMBER
YES
NO
NO
2
NO
YES
TCU10104
YES
YES
NO
2
NO
NO
TCU11108
YES
NO
YES
2
NO
NO
TCU12108
These models have dual alarm outputs, or single alarm with cooling outputs, with shared
common terminals (Form A Type). As a result, these outputs should be fitted with the same type
of output module. The main output (OP1) may be fitted with any type of output module.
MOTORIZED VALVE POSITIONER MODELS (MVP)
4 to 20 mA
NEMA 4X/IP65
BEZEL
YES
YES
YES
F
04toto10
20 VDC
mA
0 ALARM
to 10 VDC
ANALOG
OUTPUT
COOLING
ANALOG
OUTPUT
ALARM
OUTPUTS
COOLING
OUTPUT
RS485 COM
PART NUMBER
NO
YES
NO
NO
NO
YES
1
1
1
NO
NO
NO
YES
NO
NO
TCU10307
TCU11306
TCU12306
ACCESSORIES
DESCRIPTION
Relay Module
Triac Module
Logic/SSR Drive Module
SSR Power Unit
Single Phase 25 A DIN Rail Mount SSR
Single Phase 40 A DIN Rail Mount SSR
Three Phase DIN Rail Mount SSR
50:0.1 Ampere Current Transformer
40:0.1 Ampere Current Transformer
PART NUMBER
OMD00000
OMD00001
OMD00003
RLY50000
RLY60000
RLY6A000
RLY70000
CT005001
CT004001
Note: Output Modules are NOT supplied with the controller. When specifying the
controller, be sure to purchase the appropriate output module for the Main Control
Output and if necessary, the alarm output(s), the cooling output, and valve positioner
outputs. The controller can be fitted with any combination of output modules.
The Logic/SSR Drive Module is a switched DC source, intended to drive the DC input
of an SSR power unit. It should never be connected to line voltage.
All output modules are packaged separately and must be installed by the user.
582
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