Yokogawa UT450 Data sheet

<<Contents>> <<Index>>

General Specifications

MODEL UT450 Digital Indicating Controller

GS 05D01C12-01E

■General

Model UT450 Digital Indicating Controller is a simple, micro-processor based digital indicating controller with basic control capability and the user-friendly large numerical display. The UT450 features as standard many functions which are necessary for various control applications, and all of these functions such as control function, control computation function, signal computation function, etc. can be configured by using the keys on the front panel. The instrument has an Auto-tuning, an overshoot suppressing function "SUPER" and a hunting suppressing function "SUPER2" built in as standard. It is suitable for a diverse range of applications, with position-proportional control and heating/cooling control models also available.

■Main Features

• Extra-large digital display allows the indicated values to be read even from a long distance. LEDs of 20 mm height are used for the process variable display. This is a 5-digit display for higher resolution.

• Enabling the operator to start control operation immediately after simply entering the settings.

• Parameters can be easily set using a personal computer. ("Parameter setting tool (model LL100)" sold separately is required.)

• Universal input and output enables users to set or change freely the type of measured inputs, measurement range, type of control output, etc. from the front panel.

• In addition to general purpose models (universal output), the position-proportional model (relay output) or the heating/cooling control model (universal output) can be specified.

• Contact inputs (up to 7 points) can be employed and functions assigned to each contact (The maximum number of points varies depending on the specification code.)

• Various communication function are provided. Communication is possible with personal computer, programable logic controller, and other controllers.

■Functional Specifications

● Control Computation Functions

The following control computation functions can be selected:

Target setpoint and PID parameter:

Zone PID selection:

Auto-tuning:

"SUPER" function:

Continuous PID control, Time-proportional PID control, Relay ON/OFF control, Positionproportional PID control (for UT450-1■■) and Heating/Cooling control (for UT450-2■■).

Maximum eight sets of target setpoint and PID parameter can be set.

PID parameter set switching in up to 7 measured input zones.

Available as standard. Overshoots generated by abrupt changes in the

target setpoint or by disturbances can be suppressed.

UT450

UT450E

“E” indicates the model with expanded functions.

"SUPER2" function:

The function stabilizes the state of control that is unstable due to hunting, etc. without requiring any change in PID constants, when the load and/or gain varies greatly, or when there is a difference between the characteristics of temperature zones.

Preset output function:

When the instrument is in STOP mode, measured input is burnt-out, or an abnormality is found in an input circuit, a preset setpoint is output as a control output.

Control cycle time: 200 ms

Operation Mode Switching

(Note: Communication enables all the following

mode switching to be executed.)

AUTO/MANUAL switching:

Bumpless switching between automatic operation mode and manual control mode is available by using the front key or contact input. The contact input has priority over front key input or switching by communication.

RUN/STOP switching:

Switching by contact input (bumpless for switching from STOP to RUN). The contact input has priority over switching by communication. In RUN mode, control computation is activated. In STOP mode, control computation ceases and a preset value is output as a control output while other functions operate normally.

REMOTE/LOCAL switching:

Switching between remote setpoint and local setpoint by instrument operation or contact input. The contact input has priority over instrument operation or switching by communication. For remote to local switching, either bumpless tracking (employing the remote setpoint on switching as the local setpoint) or without tracking (directly switching the local setpoint) can be specified.

GS 05D01C12-01E

1st Edition Mar. 2000 (YG)

<<Contents>> <<Index>>

Control Parameters Setting Range

Proportional band: 0.1 to 999.9%

0.0 to 999.9% (for heating/cooling PID

control) 0.0% available for ON/OFF control Integral time: 1 to 6,000 s, or OFF (for Manual reset) Derivative time: 1 to 6,000 s, or OFF ON/OFF control hysteresis: 0.0 to 100.0% of measured

input range width Preset output: -5.0 to 105.0% (0 mA or less cannot be

output) Output limiter:

Setting range: -5.0 to 105.0% for both high

and low limits

However, "low limit setpoint < high limit

setpoint" must be satisfied.

In case of heating/cooling PID control, upper

limiter for heating and upper limiter for

cooling. Shutdown function:

When manual control is carried out with 4 to

20 mA output, control output can be output

down to about 0 mA (shutdown is specified

for -5.0% or less). Rate-of-change limiter for output:

OFF or 0.1 to 100.0%/s Deadband for heating/cooling control:

-100.0 to 50.0% for output range

Deadband for position-proportional control:

1.0 to 10.0% for output

● Configuration of Input/Output Signal

Measured Input Computations

Input processing, Bias addition (-100.0 to 100.0%), and First order lag filter (OFF, time constant 1 to 120 s)

Remote Input Computations

(Applied to remote input only)

Input processing, Bias addition (-100.0 to 100.0%), Ratio multiplication (0.001 to 9.999), First order lag filter (OFF, time constant 1 to 120 s)

● Alarm Functions

Alarm types:

PV high limit, PV low limit, Deviation high

limit, Deviation low limit, Deenergized on

deviation high limit, Deenergized on deviation

low limit, Deviation high and low limits, High

and low limits within deviation, Deenergized

on PV high limit, Deenergized on PV low

limit, SP high limit, SP low limit, Output high

limit, Output low limit. Alarm setting range:

PV/SP alarm: -100 to 100% of measured input

range

Deviation alarm: -100 to 100% of measured

input range width

Output alarm: -5.0 to 105.0% of output range

Alarm hysteresis: 0.0 to 100.0% of measured

input range width Stand-by action:

Stand-by action can be set to make PV/

deviation alarm OFF during start-up or after

SP change until SP reaches the normal region.

Delay timer:

0.00 to 99.59 (minute, second) An alarm is output when the delay timer expires after the alarm setpoint is reached. Setting for each alarm is possible.

Timer function (stabilization of control status notification

event) (Alarm1 only) This function sets the alarm 1 output to ON when a preset time (timer setting) elapses after a PV has reached the control target setpoint hysteresis band to notify that control processing has reached its stabilized status. Restarted in RUN/STOP or target value switching.

Other alarm actions

Sensor grounding alarm: Detects sensor deterioration and outputs an alarm. Falt-diagnosis alarm: For input burn-out, A/D conversion error, or thermocouple reference junction compensation error. FAIL output: Abnormality in software or hardware.

Number of alarm settings: 4 (maximum)

The alarm status can be read via communication in addition to output as the above alarm output.

Alarm output points (see also the item "Contact output")

• Number of contact (relay) outputs: 3 (standard)

• Number of contact (transistor open collector) outputs: 1 (when optional specification code is specified as 1 or 3)

Any of PV alarm, deviation alarm, SP alarm, output alarm, Falt-diagnosis alarm, sensor grounding alarm and FAIL output can be assigned to contacts for the above number of outputs. However, the timer delay alarm can be assigned to the alarm 1 output only.

● Display and Operation Functions

PV Display

PV1 is displayed on the 5-digit display. The number of display digits is 4 or 5. For thermocouple or RTD, data below the decimal point can be set not to display. The display range is -19999 to 30000 and the display span is 30000 or less. [450.00 appearing in the product photograph on page 1 cannot actually be displayed.]

Setpoint Display

A parameter name is displayed in the 3-digit display and data in the 5-digit display. There are four kind of displays of operation, operating parameter setting, setup parameter setting and SELECT display.

Operating display:

Setpoint, control output, etc. are displayed.

Operating parameters setting display:

The Operating parameters, which are mainly changed during operating, such as PID constant, are displayed.

Setup parameters setting display:

The Setup parameters to configure the functions of the instrument before starting operation are displayed.

GS 05D01C12-01E 1st Edition Mar.31, 2000-00

<<Contents>> <<Index>>

SELECT display:

Up to five displays which are frequently accessed can be selected from the Operating parameters setting display and Setup parameters setting display to be displayed in the SELECT display.

Status Lamps

Alarm indicating lamp:

Four lamps, AL1, AL2, AL3, and AL4

Operation mode indicating lamp:

REM (remote operation), MAN (manual mode operation)

Deviation indicating lamp:

▲Plus deviation, ▼Minus deviation, and deviation in normal range

Operation Keys

m, n keys:Increase or decrease setpoints and other

parameters displayed in the setpoint display.

SET/ENT key: Used for setting or changing set data,

switching the displayed contents, and switching operation modes except for A/M.

A/M key: Operation mode switching (Auto/Man)

Security Function

Key-lock from parameters setting and operation can be inhibited by a password.

Status lamps

Deviation (m, j, .) Remote operation (REM) Manual operation (MAN)

Communication port for light loader

Parameters are set via communication from a personal computer.

UT450

Measured value (PV) display unit

Displays PV and error codes when errors are detected.

Data display unit

Displays setpoints (SP), output values, valve opening, or parameters.

Operation keys

Increase/decrease of the setting data (m, n) Screen switching/parameter selection/entry of set data (SET/ENT) Auto/manual operation mode switching (A/M)

● Communication Functions

(For optional specification code ■■1 or ■■2 only)

This controller has 4 types of communication protocol with one communication interface. Communication is possible with personal computer, programmable logic controller, and other controllers.

Communication Protocol

Computer link communication:

Communication protocol with a personal computer

Ladder communication:

Communication protocol with programmable logic controllers.

MODBUS communication:

Communication protocol with a personal computer or PLC.

Coordinated operation:

Protocol for coordinated operation with more than one GREEN SERIES controller. The UT450 controller can be connected as a master or slave station.

Alarm indicating lamps

Displays alarms (AL1, AL2, AL3, or AL4).

RS-485 Communication Interface

The RS-485 communication interface (conforms to EIA RS485) can be used for personal computer link, ladder communication, MODBUS communication, or for coordinated operation.

Maximum number of connectable controllers:

GREEN SERIES controller 31 Maximum communication distance: 1200 m Communication method:

Two-wire half-duplex or four-wire half-

duplex, start-stop synchronization, and non-

procedural Communication rate:

600, 1200, 2400, 4800, or 9600 bps

<<Contents>> <<Index>>

Examples of Communication System Configuration Diagram

(1)

Personal computer link communication/MODBUS communication

(2) Ladder communication

Personal computer

PV2

REM MAN1 MAN2 STP CAS

A/M

DISP

SET/ENT

PV2

REM

MAN1

MAN2

STP

CAS

A/M

DISP

SET/ENT

PV2

REM MAN1 MAN2 STP CAS

A/M

DISP

SET/ENT

UT450, UT420 Digital indicating controller

(3) Coordinated operation

PV2

UP750, UP550 Program controller

REM MAN1 MAN2 STP CAS

A/M

DISP

SET/ENT

UT750, UT550, UT520, UT450, UT420 Digital indicating controller

PV2

REM MAN1 MAN2 STP CAS

A/M

DISP

SET/ENT

PV2

REM

MAN1

MAN2

STP

CAS

A/M

DISP

SET/ENT

PV2

REM MAN1 MAN2 STP CAS

A/M

DISP

SET/ENT

UT450, UT420 Digital indicating controller

■Hardware Specifications

● Input/Output Signal Specifications

Measured Input Signal

Number of input points: 1 Input type, measurement range, and measurement

Sampling period: 200 ms Burnout detection:

Input bias current: 0.05 µA (for TC or RTD b-terminal) Specified current(RTD): about 0.13 mA Input resistance: 1 MΩ or more for TC or mV input

Allowable signal source resistance:

Allowable leadwire resistance (for RTD input):

Allowable input voltage:

Noise rejection ratio:

accuracy: The type of input and measurement range can be specified using the input range code shown in the table below.

Activated for thermocouple (TC) input, RTD input, or standard signal of 0.4 to 2 V or 1 to 5 V. Possible to specify a travel of upscale, downscale, or off. For standard signal input, set to burn out at

0.1 V or less.

Approx 1 MΩ for DC voltage input 250 Ω or less for TC or mV input

Signal source resistance effect 0.1 µV/Ω or less 2 kΩ or less for DC voltage input Signal source resistance effect Approx. 0.01%/100 Ω

Maximum 150 Ω/one wire (Lead resistances of three wires must be equal.) However, it must be 10 Ω/one wire for the range of -150.0 to 150.0°C. Effect of wiring resistance: ±0.1°C/10Ω

±10 V DC for TC/mV/RTD input ±20 V DC for DC voltage input

Normal mode 40 dB (50/60 Hz) or more Common mode 120 dB (50/60 Hz) or more

MELSEC-A

Programmable logic controllor

PV2

REM

MAN1

MAN2

STP

CAS

A/M

DISP

SET/ENT

PV2

REM MAN1 MAN2 STP CAS

A/M

DISP

SET/ENT

DISP

SET/ENT

UT450, UT420 Digital indicating controller

Reference junction compensation error:

±1.0°C (15 to 35°C), ±1.5°C (0 to 15°C and

35 to 50°C) Applicable standards:

JIS, IEC, and DIN (ITS-90) for TC and RTD

PV2

REM MAN1 MAN2 STP CAS

A/M

DISP

SET/ENT

GS 05D01C12-01E 1st Edition Mar.31, 2000-00

<<Contents>> <<Index>>

Input type

Input range

Unspecified(when shipped from the factory)

Thermocouple

J T

S R N

E L (DIN) U (DIN)

W (DIN) Platinel 2 PR20-40

W97Re3-W75Re25

RTD

JPt100

Pt100

Standard signal

0.4 to 2V 1 to 5V 0 to 2V

DC voltage

0 to 10V

-10 to 20mV 0 to100mV

code

OFF

1 2 3 4 5 6

8 9

11 12 13 14 15 16

18 30 31 35 36 37 40 41 50 51 55 56

Instrument

range (°C)

Instrument

range (°F)

Set the data item PV input type “IN” to the OFF option to leave the PV input type undefined.

-270.0 to 1370.0°C

-270.0 to 1000.0°C

-200.0 to 500.0°C

-200.0 to 1200.0°C

-270.0 to 400.0°C

0.0 to 400.0°C

0.0 to 1800.0°C

0.0 to 1700.0°C

-200.0 to 1300.0°C

-270.0 to 1000.0°C

-200.0 to 900.0°C

-200.0 to 400.0°C

0.0 to 400.0°C

0.0 to 2300.0°C

0.0 to 1390.0°C

0.0 to 1900.0°C

0.0 to 2000.0°C

-200.0 to 500.0°C

-150.00 to 150.00°C

-200.0 to 850.0°C

-200.0 to 500.0°C

-150.00 to 150.00°C

0.400 to 2.000 V

1.000 to 5.000 V

0.000 to 2.000 V

0.00 to 10.00 V

-450.0 to 2500.0°F

-450.0 to 2300.0°F

-200.0 to 1000.0°F

-300.0 to 2300.0°F

-450.0 to 750.0°F

-200.0 to 750.0°F 32 to 3300°F

32 to 3100°F 32 to 3100°F

-300.0 to 2400.0°F

-450.0 to 1800.0°F

-300.0 to 1600.0°F

-300.0 to 750.0°F

-200.0 to 1000.0°F

32 to 4200°F

32.0 to 2500.0°F 32 to 3400°F

32 to 3600°F

-300.0 to 1000.0°F

-200.0 to 300.0°F

-300.0 to 1560.0°F

-300.0 to 1000.0°F

-200.0 to 300.0°F

Display range

-19999 to 30000 Display span 30000 or less (Decimal point position changeable)

±0.1% ±1 digit of instrument range at 0°C or more ±0.2% ±1 digit of instrument range at less than 0°C

• However, ±2% ±1 digit of instrument range for type K at temperatures less than -200°C. However, ±1% ± 1 digit of instrument range for type T

• at temperatures less than -200°C.

±0.15% ±1 digit of instrument range at 400°C or more ±5% ±1 digit of instrument range at less than 400°C

±0.15% ± 1 digit of instrument range

±0.1% ± 1 digit of instrument range ±0.25% ±1 digit of instrument range for temperature at less than 0°C

±0.1% ±1 digit of instrument range at 0°C or more ±0.2% ±1 digit of instrument range at less than 0°C

• However, ±1.5% ±1 digit of instrument range for type E at temperature less than -200°C.

±0.2% ±1 digit of instrument range ±0.1% ± 1 digit of instrument range

±0.5% ±1 digit of instrument range at 800°C or more

Accuracy not guaranteed for temperature less than 800°C

±0.2% ± 1 digit of instrument range ±0.1% ± 1 digit of instrument range (Note1) (Note2) ±0.2% ± 1 digit of instrument range (Note1) ±0.1% ± 1 digit of instrument range (Note1) (Note2)

±0.2% ± 1 digit of instrument range (Note1) ±0.1% ± 1 digit of instrument range

-10.00 to 20.00 mV

0.0 to 100.0 mV

Note1:The accuracy is ±0.3°C of instrument range ±1 digit for a temperature range from 0 to 100°C. Note2:The accuracy is ±0.5°C of instrument range ±1 digit for a temperature range from –100 to 200°C. *1: Performance in the standard operating conditions (at 23±2°C, 55±10% RH, and 50/60Hz power frequency)

Instrument accuracy

Remote Input Signal

(UT450-■■1, -■■2, or -■■4 only) Functions: Remote input (analog input) for setting SP Input type: Settable within the range of voltage input

1 to 5 V DC, 0 to 2 V DC, 0 to 10 V DC or

0.4 to 2.0 V DC. Number of inputs: 1 point Sampling period: 200 ms Input resistance: Approx. 1 MΩ Input accuracy: ±0.3% ± 1 digit of F.S. for 0 to 2 V DC

input

24V DC Loop Power Supply for Sensor

Supplies power to the 2-wire transmitter. The current signal is converted to a voltage signal by placing a resistor (arbitrary from 10 to 250 Ω) and is read by the measured input block.

Supply voltage 21.6 to 28.0 V DC, maximum supply current about 30 mA (only for models with 24 V DC loop power supply)

■24 V DC Power Supply Wiring to Two-wire Sensor

±0.2% ± 1 digit of F.S. for 0 to 10 V DC input ±0.375% ± 1 digit of F.S. for 0.4 to 2.0 V DC range ±0.3% ± 1 digit of F.S. for 1 to 5 V DC range Performance in the standard operating conditions (at 23±2°C, 55±10% RH, and 50/ 60Hz power frequency)

Feedback Resistance Input Signal

Provided for UT450-1■■ only. Valid for position propor- tional PID control.

Two-wire transmitter

4-20mADC

External resistor (Note)

250Ω

PV input

1 to 5 V DC signal

Sensor power

supply

21.6 to

28.0 V DC

Slidewire resistance:

Total resistance 100 Ω to 2.5 kΩ (with detection of slidewire breakage)

Note : Connecting a 250Ω resistor to the terminals is optional. Model : X010-250-2 (resistor with M3.5 crimp-on terminal lugs)

Measuring resolution ±0.1% of total resistance

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