Yokogawa UT320 Data sheet

<<Contents>> <<Index>>

General Specifications

Model UT320 Digital Indicating Controller

GS 05D01D02-02E

■General

Model UT320 Digital Indicating Controller is a highly accurate 1/8 DIN controller, provided with universal input/ output. It has a large display for readings and excellent monitoring operability with the Auto/Man switching key. In addition, heating/cooling control, including PID control with auto-tuning, the overshoot suppressing function “SUPER” and the hunting suppressing function “SUPER2” are available as control functions, and a retransmission of variables or a 15V DC loop power supply are also equipped as standard. A communication function or 24V DC loop power supply is available optionally. As described above, the UT320 is a controller provided with higher functions and capability than conventional similar-size controllers.

■Main Features

• The latest in large digital displays has been realized and a large PV display with characters 12 mm in height has been employed to be clearly readable from distant locations.

• Universal input and output enable users to set or change freely the type of measured inputs (thermocouple, RTD or DCV), measurement range, type of control output (4 to 20 mA current, voltage pulse, or relay contact), etc. from the front panel.

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

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

■Function Specifications

UT320

UT320E

“E” indicates the model with expanded functions.

Reference point = Measuring input range (0%) 

Reference point hysteresis = Fixed to 0.5% of the Reference deviation method:

Reference deviation = OFF or 0.1 to 100.0% of

Measuring input range (100%)

Reference point 2

Reference point 1  Reference point 2  Measuring input range (100%)

measured input range width.

PID parameters (No. 4 PID) are selected when the deviation exceeds the reference deviation. This process takes precedence over the reference point method.

measured input range width

Reference deviation

No.3PID

● Control Computation Functions

Control computation:

Can be selected from the following types: Continuous PID control, Time-proportional PID control, Heating/Cooling control (for heating/

cooling type only) or Relay ON/OFF control. Control cycle time: 250 ms Number of sets of target setpoints and PID parameters: 4 Target setpoint and PID selection:

PID parameters are provided for every target

setpoint and the set of PID parameters are

selected at the same time that the setpoint

number is selected. Zone PID selection:

PID parameters are selected depending on the

value of the PV. For selection, the reference

point (PID parameter selection setpoint) or the

reference deviation is used.

Reference point method:

The measuring input range is divided into a maximum of three zones with up to two reference points, and PID parameters are selected (No. 1 PID to No. 3 PID) for every zone.

No.2PID

Reference point 1

No.1PID

Measuring input range (0%)

Measured value (PV)

Auto-tuning:

Available as standard. If auto-tuning is operated, PID parameters are automatically set (limit cycle method).

“SUPER” function:

Overshoots generated by abrupt changes in the target setpoint or by disturbances can be suppressed.

“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.

GS 05D01D02-02E

©Copyright Feb. 2000

3rd Edition Jul. 2004

<<Contents>> <<Index>>

Control Parameters Setting Range

Proportional band = 0.1 to 999.9%

0.0 to 999.9% (for heating/cooling control,

0.0% for ON/OFF control) Integral time = 1 to 6,000 s, or OFF (manual reset) Derivative time = 1 to 6,000 s, or OFF Manual reset value = -5.0 to 105.0% of output range

(functions when integral time is off.)

ON/OFF control hysteresis = 0.0 to 100.0% of measured

input range width (0.1 to 0.5% for heating/ cooling control)

Setpoint rate-of-change setting = off, or 0.0 to 100.0%/h or

min. of measured input range width A PV tracking function operates automatically when the setpoint is changed, the power is turned on, or the mode is changed from manual to automatic.

Direct/reverse action:

The output increase/decrease direction can be defined corresponding to a positive or negative deviation. For heating/cooling control, it is fixed; for the heating side output, reverse, for the cooling side output, direct.

Anti-reset windup:

When controller output is limited, normal integration is superseded by an anti-reset windup computation to suppress overintegration.

Control output cycle time = 1 to 1000 s (for Time-

proportional PID control) and (the cooling side output cycle time is also the same when

heating/cooling control is used). Preset output value = -5.0 to 105.0% of output range Output tracking: Whether the output bump is provided or

not can be selected by changing the PID

control mode. Output limiter

Upper limit = Lower limit to 105.0% of output

range

Lower limit = -5.0% of output range to upper

limit Heating/cooling dead band = -100.0 to 50.0% for output

range

● Signal Computation Functions

Measured input computation:

Bias addition (-100.0 to 100.0% of measured

input range width), and first-order lag filter

(time constant off or 1 to 120 s) Contact input function:

Target setpoint selection, Auto/Man operating

mode switching, key lock parameter display/

non-display switching

Target setpoint selection can be done for

either a 2-setpoint or 4-setpoint selection.

• If the 2-setpoint selection is set, Auto/Man

mode switching can be used as well.

• If the 4-setpoint selection is set, Auto/Man

switching and key lock parameter display/non-

display switching cannot be used together.

If key lock parameter display/non-display

switching is used, target setpoint selection and

Auto/Man mode switching cannot be used.

● Alarm Functions

Eighteen types of alarm functions are provided. The alarm status is indicated by the alarm lamp on the front panel. Also, three points among them can be output as relay contact outputs.

Alarm types:

PV high limit, PV low limit, Deviation high limit, Deviation low limit, Deenergized on deviation high limit, Deenergized 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,Heater disconnection alarm, Sensor prounding alarm,FAIL output.

Alarm output:

3 points. Any three points can be output as contact outputs among the above alarm. For heating/cooling control, if cooling side output is output as a relay contact, up to two alarm outputs can be used.

Setting ranges for PV, deviation, setpoint and output alarms:

PV/setpoint alarm:

-100.0 to 100.0% of measured input range

Deviation alarm:

-100.0 to 100.0% of measured input range width

Output alarm:

-5.0 to 105.0% of output range

Alarm hysteresis width:

0.0 to 100.0% of measured input range width

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.

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.

Heater disconnection alarm (optional):

two circuits incorporated A heater disconnection alarm is output if the heater current consumption is the disconnection detection value or less. This alarm can be used for Relay ON/OFF control or timeproportional PID control.

Heater current setting range: 0.0 to 50.0 A Setting accuracy: ±5% of span ± 1 digit Heater current detecting resolution: 0.5 A Time required until disconnection detection is on: 0.2 s

minimum

Disconnected sensor model: CTL-6-S-H (URD Co. Ltd.)

Sensor grounding alarm:

An alarm is output after detecting a change in control output. If the moving average * of control output is out of the setting range (between the high and low limits of the on/off rate) in spite of the deviation being within a fixed range (on/off rate detection width) and control being in stable condition, the sensor is judged to be in a grounding condition.

* Moving a ver age refers to the av erage value for output

values sampled (fiv e times) in ev ery cycle time .

High- and low-limit setting range of on/off rate:

-5.0 to 105.0% of output range

Detection width of on/off rate:

0.0 to 100.0% of measured input range width.

Fault diagnostic alarm:

Input burnout, A/D conversion error, thermocouple reference junction compensation error

FAIL output: Software failure and/or hardware failure

When in Fail, control output, retransmission output and alarm output become 0% or off.

GS 05D01D02-02E 3rd Edition Jul. 30, 2004-00

<<Contents>> <<Index>>

● Display and Operation Function

PV display: In 4-digit digital display for engineering data Setpoint display:

Various data, such as the setpoint (SP), are

displayed by selection on the 4-digit digital

display. Status indicating lamps:

3 alarm indicator lamps: AL1, AL2, AL3 3 setpoint number indicator lamps:

SP2, SP3, SP4 (Go out when SP1 is selected.)

MAN operation mode lamp: MAN (lit in MAN mode)

Operation keys:

쑶 and 쑴 keys:

Increases or decreases setpoints and various parameters.

SET/ENT key:

For data setting or call-up/selection of various parameters

A/M key: Switching of operation mode (Auto/Man)

SELECT display:

A panel where operating parameters that are

frequently changed during operation can be

selected and registered. For example, by

registering the alarm -1 setpoint in the

SELECT display, the setpoint can easily be

displayed during operation. Security function:

An operation-inhibiting mode using a

password is provided.

Status lamps

Alarm (AL1, 2, 3), Manual (MAN). Setpoint No (SP2, 3, 4). in use.

Communication port for light loader

Parameters are set via communication from a personal computer.

Operational keys

Increase/Decrease the setting data (쑶,쑴) Select parameter/Enter the setting data (SET/ENT) A/M mode switching (A/M)

LED display unit (for PV)

Display PV, and error code when error is detected.

LED display unit (for SP)

Display setpoint (SP), output value, and setting item/value of parameters.

<<Contents>> <<Index>>

● Communication Functions (optional)

This controller has a communication function and can be connected to a personal computer, programmable logic controller, or other /GREEN series controllers.

Communication protocol

Computer link communication:

Communication protocol with a personal computer.

Ladder communication:

Communication protocol with programmable logic controller made.

MODBUS communication:

Communication protocol with a personal computer or PCL.

Coordinated operation:

Communication protocol to coordinate operation with two or more GREEN series controllers. The UT320 can be connected as a master station or a slave station.

Communication interface

Communication protocol:

Computer link, ladder communication, MODBUS communication or coordinated

operation Standards: EIA RS485 Maximum number of connectable controllers:

31 GREEN series controllers Maximum communication distance: 1,200 m Communication method:

Two-wire half duplex or four-wire half

duplex, start-stop synchronization, non-

procedural Communication rate:

600, 1200, 2400, 4800, 9600 bps

Examples of Communication System Configuration Diagram

(1) Computer link communication/MODBUS communication (2) Ladder communication

Personal computer

PV2

1 2 3

REM

MAN1 MAN2 STP CAS

A/M

DISP

SET/ENT

PV2

REM

MAN1

MAN2

STP

CAS

A/M

DISP

SET/ENT

UT350/UT320 Digital indicating controller

(3) Coordinated operation

PV2

1 2 3

REM

MAN1

UP350 Program controller

MAN2 STP CAS

A/M

DISP

SET/ENT

or UT350/UT320 Digital indicating controller

PV2

1 2 3

REM

MAN1 MAN2 STP CAS

A/M

DISP

SET/ENT

PV2

REM

MAN1

MAN2

STP

CAS

A/M

DISP

SET/ENT

UT350/UT320 Digital indicating controller

PV2

1 2 3

REM

MAN1 MAN2 STP CAS

A/M

DISP

SET/ENT

PV2

1 2 3

REM

MAN1 MAN2 STP CAS

A/M

DISP

SET/ENT

MELSEC-A

PLC

PV2

REM

MAN1

MAN2

STP

CAS

A/M

DISP

SET/ENT

PV2

1 2 3

REM

MAN1 MAN2 STP CAS

A/M

DISP

SET/ENT

DISP

SET/ENT

UT350/UT320 Digital indicating controller

PV2

1 2 3

REM

MAN1 MAN2 STP CAS

A/M

DISP

SET/ENT

GS 05D01D02-02E 3rd Edition Jul. 30, 2004-00

+ 8 hidden pages