Yokogawa UT550 Data sheet

<<Contents>> <<Index>>

General Specifications

MODEL UT550 Digital Indicating Controller

GS 05D01C02-01E

■General

Model UT550 Digital Indicating Controller is an intelligent, micro-processor based digital indicating controller with powerful control capability and the user-friendly large numerical display. The UT550 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 eight types of control strategies and also an overshoot suppressing function "SUPER" and a hunting suppressing function "SUPER 2" as well as an auto-tuning function built in as standard. It is suitable for a diverse range of applications, with position-proportional control model and heating/cooling control model 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 five-digit display for higher resolution.

• Eight types of control function, including single-loop control, cascade control, loop control with PV autoselector, and loop control with PV-hold function, 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 PV inputs, PV input range, type of control output, etc. from the front panel.

• In addition to standard type (universal output), the position-proportional type (relay output) or the heating/ cooling type (universal output) can be specified.

• Contact inputs (up to 8 points) and contact outputs (up to 8 points) can be employed and functions can be assigned to each contact. (The maximum number of points varies the suffix code.)

Note: See Hardware Specifications and Contact Outputs

• Various communication function are provided.

described later.

Communication is possible with personal computer, programmable logic controller, and other controllers.

■Functional Specifications

● Control Functions

UT Mode

The following types of basic control structure can be set as the UT mode by the user.

Single-loop control (UT mode 1):

The most simple and basic control function.

UT550

UT550E

“E” indicates the model with expanded functions.

Cascade primary-loop control (UT mode 2):

Output tracking function and cascade control logic are provided. Suitable for cascade primary-loop control.

Cascade secondary-loop control (UT mode 3):

Setpoint output and cascade control logic are provided. Suitable for cascade secondary-loop control.

Cascade control (UT mode 4):

Dual control function for cascade control is available in a single instrument.

Loop control for back-up (UT mode 5):

Output tracking function is provided to back up another control instrument. The local and remote control outputs are switched by a contact input.

Loop control with PV switching (UT mode 6):

Two PV inputs are switched for control depending on the status of contact input or PV input.

Loop control with PV auto-selector (UT mode 7):

Two PV inputs are automatically selected for control with a high, low, average, or temperature-difference value selector.

Loop control with PV-hold function (UT mode 8):

This control holds a PV input and a control output if an external sensor is switched.

● Control Computation Functions

In each UT mode, the following control computation functions can be selected:

Continuous PID control, Time-proportional PID control, Relay ON/OFF control, Positionproportional PID control (for UT550-1■, UT550-4■)and Heating/Cooling control (for UT550-2■).

Target setpoint and PID parameters:

Maximum eight sets of target setpoint and PID parameters can be set. These eight sets can be set for both the main and slave loops in cascade control.

GS 05D01C02-01E

2nd Edition Sept. 2000 (MC)

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Zone PID selection:

Dividing PV input range into maximum 7 zones by maximum 6 reference points, PID parameter set switching in up to 7 PV input zones.

Auto-tuning:

Available as standard. Possible to activate auto-tuning for both main and slave loops for cascade control.

"SUPER" function:

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

"SUPER 2" function:

This 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, PV input is burnt-out, or an abnormality is found in an input circuit, a preset value is output as a control output.

Sampling period

Each sampling period can be selected under the following conditions:

50 ms: Available for model code UT550-00, when

UT mode is set to Single-loop control and the following functions are not used: "SUPER" function, "SUPER 2" function, heating/cooling control, PV input computation, setpoint rate-of-change limiter, MV output rate-of-change limiter, deviation alarm, sensor grounding alarm, fault diagnosis alarm, and FAIL output.

100 ms: Available when UT mode is not cascade

control. 200 ms: Available when UT mode is cascade control. (Set value when shipped from the factory: 200 ms) 500 ms: Always available.

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 keys or contact input. The contact input has priority over front key input or switching by communication. The contact input is invalid for Cascade secondary-loop control or Cascade control.

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.

CASCADE/AUTO/MANUAL switching:

Switching by instrument operation or contact input. The contact input has priority over instrument operation or switching by communication. Valid for Cascade secondary-loop control or Cascade control.

Output tracking ON/OFF switching:

Provided for Cascade primary-loop control or Loop control for backup. External tracking signal and internal control output are switched by the contact input. The contact input has priority over the switching by communication.

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 PV input

range span 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 value

Deadband for position-proportional control:

1.0 to 10.0% for output

● Configuration of Input/Output Signal

PV Input Computations

Input processing, Square root extraction (voltage input only, Input low cut 0.0 to 5.0%), Ten-segment linearizer function, Ten-segment bias, Bias addition (-100.0 to 100.0%), and First order lag filter (OFF, time constant 1 to 120 s)

Auxiliary Input Computations

(Applied to remote setting input only)

Input processing, Square root extraction (Input low cut 0.0 to

5.0%), 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)

GS 05D01C02-01E 2nd Edition Sept.18, 2000-00

<<Contents>> <<Index>>

● 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 PV input range Deviation alarm: -100 to 100% of PV input range span Output alarm: -5.0 to 105.0% of output value Alarm hysteresis: 0.0 to 100.0% of PV input range span

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.

Timer function (stabilization of control status notification

event) (Alarm 1 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 has reached its stabilized status. Restarted in RUN/STOP or SP switching.

Other alarm actions:

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

Number of alarm settings: 8 (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 Outputs")

• Number of contact (relay) outputs: 3 (standard) or 4 (if a control output relay is used for the alarm 4 output relay.)

• Number of contact (transistor open collector) outputs: 4 (when optional function code is specified as 1 or 3)

From the above, up to 8 point outputs can be obtained (except for cascade control). Any of PV alarm, deviation alarm, SP alarm, output alarm, Fault-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. Also, the alarm 4 only can be assigned to the control output relay (if a relay is not used for control output).

● Display and Operation Functions

PV Display

PV is displayed in the 5-digit display. PV1 or PV2 is displayed by switching them in cascade control. 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. [550.00 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 kinds of displays : operating display, operating parameter setting display, setup parameter setting display and SELECT display.

Operating display:

Data necessary for operations, such as setpoint or control output, are displayed depending on the UT mode.

Operating parameters setting display:

The Operating parameters, which are mainly changed during operations, 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. UT mode is to be set in this display.

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 Indicator Lamps

Alarm indicator lamps:

Four lamps, AL1, AL2, AL3, and AL4

Status indicator lamps:

REM (remote operation), MAN (manual mode operation), CAS (cascade operation), and LP2 (cascade secondary-loop control)

Deviation monitor:

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

Operation Keys

䉭, 䉮 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/Manual)

Security Function

Key-lock by parameter setting and prohibiting operation by a password are available.

<<Contents>> <<Index>>

Status indicator lamps

䊏

Deviation (䉱,

, 䉲) Cascade operation (CAS) and remote operation (REM) Manual operation (MAN) Lit for secondary parameter indication (LP2)

Light-loader interface

Parameters are set via communication from a personal computer.

Operation keys

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

● Communication Functions

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

This controller has four 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

Ladder communication:

Coordinated operation:

computer

Communication protocol with the ladder program on some programmable logic controllers.

Protocol for coordinated operation with more than one GREEN SERIES controller. The UT550 controller can be connected as a master or slave station.

Measured value (PV) display

Displays PV and error codes when errors are detected.

Setpoint display

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

Alarm indicator lamps

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

MODBUS communication:

Communication protocol with a personal computer, or PLC.

RS-485 Communication Interface

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

Maximum number of connectable controllers:

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

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

duplex, start-stop synchronization, and non-

procedural Baud rate:

600, 1200, 2400, 4800, or 9600 bps

Examples of Communication System Configuration Diagram

(1) Personal computer link communication/ MODBUS 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

UT550, UT520 Digital indicating controller

(3) Coordinated operation

PV2

UP750, UP550 Program controller

REM MAN1 MAN2 STP CAS

A/M

DISP

SET/ENT

UT750, UT550, UT520 Digital indicating controller

PV2

REM MAN1 MAN2 STP CAS

A/M

DISP

SET/ENT

UT550, UT520 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

(2) Ladder communication

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

UT550, UT520 Digital indicating controller

GS 05D01C02-01E 2nd Edition Sept. 18, 2000-00

PV2

REM MAN1 MAN2 STP CAS

A/M

DISP

SET/ENT

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■Hardware Specifications

● Input/Output Signal Specifications

PV Input Signal

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

Sampling period: 50, 100, 200, or 500 ms (selectable) Burnout detection:

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

Unspecified (When shipped from the factory) Thermocouple

RTD

Standard signal

DC voltage

accuracy: The type of input and instrument input range can be specified from the instrument input range codes shown in the table below.

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

0.1 V or less.

About 1 MΩ for DC voltage input

Input Type

J T

S R N

E L (DIN) U (DIN)

W (DIN) Platinel 2 PR20-40

W97Re3-W75Re25 JPt100

Pt100

0.4 to 2V 1 to 5V 0 to 2V 0 to 10V

-10 to 20mV 0 to100mV

Instrument Input

Range 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

Set the data item PV input type “IN 1” to the OFF option to leave the PV input type undefined.

-10.00 to 20.00 mV

Instrument Input

Range (°C)

-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

0.0 to 100.0 mV

Allowable signal source resistance:

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 About 0.01%/100 Ω Allowable wiring resistance (for RTD input):

Maximum 150 Ω/wire (Conductor resistance

between three wires must be equal.)

However, it must be 10 Ω/wire for a

maximum range of -150.0 to 150.0°C.

Effect of wiring resistance: ±0.1°C/10Ω Allowable input voltage:

±10 V DC for TC/mV/RTD input

±20 V DC for DC voltage input

Noise rejection ratio:

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

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

Instrument Input

Range (°F)

-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 (Note 1) (Note 2) ±0.2% ± 1 digit of instrument range (Note 1) ±0.1% ± 1 digit of instrument range (Note 1) (Note 2)

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

Note 1: The accuracy is ±0.3°C of instrument range ±1 digit for a temperature range from 0 to 100°C. Note 2: 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)

Measurement Accuracy

2nd Edition Sept. 18, 2000-00

<<Contents>> <<Index>>

Auxiliary Analog Input Signal

(UT550-■1, -■2, or -■4 only) Functions: Remote setting input, tracking input, cascade

control secondary loop PV input, etc.

Input type: Settable within the range of voltage input 0 to

2 V DC, 0 to 10 V DC, 0.4 to 2.0 V DC or

1 to 5 V DC. Number of inputs: 1 point Sampling period: 100, 200 or 500 ms

Auxiliary analog input sampling period is

linked with PV input sampling period.

(If PV input period is 50 ms , auxiliary analog

input period is 100 ms.) Input resistance: Approx. 1 MΩ Input accuracy: ±0.3% ± 1 digit of input span for 0 to 2 V

DC input

±0.2% ± 1 digit of input span for 0 to 10 V

DC input

±0.375% ± 1 digit of input span for 0.4 to 2.0

V DC range

±0.3% ± 1 digit of input span 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

(UT550-1■ only) Valid for position proportional PID control.

Slidewire resistance:

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

Measuring resolution ±0.1% of total resistance

24 V 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 PV input terminal.

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

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

250Ω

PV input

1 to 5 V DC signal

Loop power

supply

21.6 to

28.0 V DC

External resistor (Note)

Two-wire transmitter

4-20mADC

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

Retransmission Output

Any of the PV, target setpoint or control output is output. Or this can be used for 15 V DC loop power supply.

Number of output points: 1 or 2

Retransmission output 2 is available only when

“relay” is selected as the control output type. Output signal: 4 to 20 mA DC, 0 to 20 mA DC, 20 to 4

mA DC or 20 to 0 mA DC (0 mA or less

cannot be output)

Load resistance: 600 Ω or less Output accuracy: ±0.1% of span (±5% for 1 mA or less)

Performance in the standard operating conditions (at 23±2°C, 55±10% RH, and 50/ 60Hz power frequency)

When using for 15 V DC loop power supply: Supply voltage 14.5 to 18.0 V DC, maximum supply current about 21 mA (with the protection circuit at field short-circuit).

Control Outputs

Select 1 or 2 points (UT550-2■) from the following output types depending on model type and UT mode. Relay contact output for position proportional PID control (UT550-1■ UT550-4■).

Current output

Number of output points: 1 or 2 (for heating/cooling

type) (switchable to voltage pulse output)

Output signal: 4 to 20 mA DC, 0 to 20 mA DC, 20 to 4

mA DC or 20 to 0 mA DC

Load resistance: 600 Ω or less Output accuracy:

±0.1% of span (±5% for 1 mA or less) Performance in the standard operating conditions (at 23±2°C, 55±10% RH, and 50/ 60Hz power frequency)

Voltage pulse output

Number of output points: 1 or 2 (for heating/cooling

control) (switchable to current output)

Output signal:

ON voltage-12 V DC or more (load resistance 600 Ω or more) OFF voltage- 0.1 V DC or less

Resolution: 10 ms or 0.1% of output value, whichever is

greater

Relay contact output

Number of output points: 1 or 2 (for heating/cooling

control)

Output signal: At three terminals of NC, NO, and

Common

Contact rating: 250 V AC, 3 A or 30 V DC, 3 A

(resistance load)

Resolution: 10 ms or 0.1% of output value, whichever is

greater

Contact Inputs

Usage: Target setpoint switching, C/A/M mode

switching, REMOTE/LOCAL switching, RUN/STOP switching, or PV input switching

Number of input points:

Varies with optional codes (as shown below):

UT550-■0: 2 points UT550-■1: 8 points UT550-■2: 3 points UT550-■3: 7 points UT550-■4: 3 points

Input type: Non-voltage contact input or transistor open

collector input Input contact rating: 12 V DC, 10 mA or more On/off detection:

For non-voltage contact input,

On .. contact resistance 1 kΩ or less;

Off.. contact resistance 20 kΩ or more

For transistor contact input,

On .. 2 V or less;

Off.. leak current 100 µA or less Minimum status detection hold time: PV input sampling

period ×3

GS 05D01C02-01E

2nd Edition Sept. 18, 2000-00

<<Contents>> <<Index>>

Contact Outputs

Usage: Alarm output, FAIL output Number of output points:

Varies with optional codes (as shown below):

UT550-■0: Relay output 3 points UT550-■1: Relay output 3 points, transistor output 4

points

UT550-■2: Relay output 3 points UT550-■3: Relay output 3 points, transistor output 4

points

UT550-■4: Relay output 3 points

However, when a relay is not used for control output, the relay for control output can be used for the alarm 4. For this reason, the number of relay output points can be

changed to 4 by adding to the above 3. Relay contact rating: 240 V AC, 1 A or 30 V DC, 1 A Transistor contact rating: 24 V DC, 50 mA

● Display Specifications

Measured value (PV) display:

Data display: 3 digits + 5 digits, 7-segment red color

Status indicator lamps: LEDs

5-digit 7-segment red color LED display; height of letters 20 mm

LED display; height of letters 9.3 mm

● Conformance to Safety and EMC Standards

Safety standard:

EMC standards:

Conforms to IEC1010-1: 1990 and EN610101: 1992 Certified for CSA1010 The overvoltage category of each input is CAT II (IEC1010-1) Certified for UL508 application

To the following EMC standards. During test, the controller continues to operate with the measurement accuracy within ±20% of the range: For EMI (emission), EN55011, Class A Group 1 For EMS (immunity), EN50082-2: 1995

● Construction, Installation, and Wiring

Construction: Dust-proof and Drip-proof front panel

Material of the body: ABS resin and polycarbonate Case color: Black Weight: About1 kg or less External dimensions: 96W × 96H × 100D (from the panel

Mounting: Direct panel mounting; mounting bracket, one

Panel cutout dimensions: Mounting attitude:

Wiring connection:

conforming to IP55. For side-by-side close installation, the controller loses its dust-proof and drip-proof protection.

face) (mm)

each for upper and lower mounting

+0.8

W ×

+0.8

H (mm)

Up to 30 degrees from horizontal; Must not face downward.

With M3.5 screw terminals (for signal, power and grounding wiring)

● Power Supply and Isolation

Power supply: Rated voltage 100 to 240 V AC (±10%),

Power consumption: Max. 20 VA (Max. 8.0 W) Data backup: Non-volatile memory. Service life about

Withstanding voltage:

Isolation resistance:

Grounding: Class 3 grounding (grounding resistance of

Isolation Specifications

PV input terminal:

Auxiliary analog input terminal:

15 V DC loop power supply terminal:

24 V DC loop power supply terminal:

Control output (current output or voltage pulse output) and

Relay contact control output terminals:

Contact input terminals:

Relay contact output terminals:

50/60 Hz

100,000 times of writings 1500 V AC for 1 min.

(Note)

between primary terminals and secondary terminals

1500 V AC for 1 min.

(Note)

between primary terminals and ground terminal

1500 V AC for 1 min.

between ground terminal and secondary terminals

500 V AC for 1 min.

between secondary terminals

where primary terminals stand for power and relay output terminals and secondary terminals stand for analog input and output signal terminals, voltage pulse output terminals, and contact input terminals.

Note: The withstanding voltage is specified as

2300 V AC per minute to provide a margin of safety.

20 MΩ or more for 500 V DC applied between power terminals and ground terminal

100 Ω or less)

Isolated from other input/output terminals, but not isolated from internal circuit.

Isolated from other input/output terminals and internal circuit.

Not isolated from analog current output and voltage pulse control output, but isolated from other input/output terminals and internal circuit.

Isolated from 4-20mA analog ouptut, other input/output terminals and internal circuit.

retransmission output: Not isolated between control output and retransmission output, but isolated from other input/output terminals and internal circuit.

Isolated between contact output terminals, and from other input/output terminals and internal circuit.

Not isolated between contact input terminals and from communication terminals, but isolated from other input/output terminals and internal circuit.

Not isolated between relay contact outputs, but isolated from other input/output terminals and internal circuit.

2nd Edition Sept. 18, 2000-00

+ 15 hidden pages