YOKOGAWA

UT55A {1/4 DIN} Advanced Indicating Controllers

Designed for demanding applications
(Rugged, reliable, high accuracy, feature loaded)

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Features

Large Active color display
Up to 4 analog inputs available
Ladder sequence programs can be built
3 alarm independent common terminals available as standard
Up to 18 DOs (combinations available)
Universal Input
Dust-proof and drip-proof front panel (NEMA4*2 /IP56)
PID Control:
- — 8 Built-in Control Modes
- — 8 Built-in Control Types
- Ladder Sequence Control
- Fuzzy Logic Control

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Simple operation:
- Bright & Easy-to-Read Active Color LCD Display
- Auto-tunning
- Scrolling Text
- Navigation Guide & Navigation Keys
- Programmable Function Keys
- User-Settable Default Values
- Multiple Language Support
- Compact Design
Communications
- Modbus, Peer-to-peer
- PC-Link & Ladder protocols and coordinated operation
- Ethernet, RS-485, PROFIBUS-DP, CC-Link

Applications

Measurement, display, and control of temperature, pressure, and flow rate
Research and development facilities and manufacturing operations
(heat treatment, washing, sterilizing, etc.)
Critical heating and cooling control

Description

The Yokogawa UT55A programmable digital Indicating controllers are designed to be used in variety of industrial applications such as: heating and cooling,in machinery, electrical applications like power supplies and more. They are reliable and sophisticated digital indicating controllers that promote ease-of-use features and control capabilities to solve the most demanding and critical of applications.

An easy-to-read, 14-segment large color LCD display, along with navigation keys, greatly increase the monitoring and operating capabilities of these advanced indicating controllers. A ladder sequence function is included as standard.

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The UT55A are available with 8 standard preset control functions: single-loop, loop, cascade, PID, ON/OFF and temperature control as well as 8 preset control algorithms. Three digital inputs and three digital outputs are included as standard with additional input/output configurations available as options. They are ideal controllers for heating and cooling applications where temperature and humidity control is crucial.

Literature
Specifications
Accessories

Literature and Technical Information
	Panel Instrumentation

++	UT55A Series \| General Specification sheet (4.9 MB)

++	UT55A Series\| Manual (9.8 MB)

++	UT55A Series\| Operation Manual (8.5 MB)

	Software

	Software

++	Literature – LL50A – Parameter setting tool (11.4 MB)

++	Literature – LL50A – Parameter Setting & Ladder Program Building Function (688 kB)

++	Literature – LL50A – Parameter Setting Software Installation Manual (3.9 MB)

Model: Yokogawa UT55A Advanced Digital indicating controllers (programmable)
PV input
input Type:	1 Universal input (TC, RTD, mV, V, mA)
Indication accuracy	±0.1% of F.S.

Control scan period:	50, 100, 200 msec
PV/SP data display	14-segment, 5 digits, Bar graph LCD display
Control Outputs (MV)
Type:	Relay, Voltage Pulse, Current
Algorithm:	ON/OFF, PID (Continuous, Time-proportional), Heating/Cooling, Position-proportional
Digital Inputs
Number:	3 (Std) 9 (Max)
Type:	SP No. Change, PID No. Change, A/M Change, etc
Digital outputs
Number:	3 (Std) 18 (Max)
Type:	PV High, PV Low, Dev High, etc
Current transformer input
Number:	2
Retransmission
Number:	1
Type:	PV, SP, OUT, etc
Remote (aux.) input
Number:	1 or 3
Type:	1 to 5 V, etc. Only 1 input can be changed to universal input when specified the /DR option
Preset Control Functions:
Number:	8
Type:	single-loop, loop, cascade, PID, ON/OFF and temperature control as well as 8 preset control algorithms
Loop power supply
Number:	1
Type:	21.6 to 28.0 VDC
Communications
Number:	1
Type:	RS-485, Ethernet, PROFIBUS-DP, CC-Link, DeviceNet
Other specifications
Power supply:	100 to 240 VAC (+10%, -15%) or 24 VAC/DC (+10%, -15%) (option)
Power consumption:
Environment
Operating Temp.:	0 to 40°C (32 to 104°F)
Storage Temp:	-10 to 50°C (14 to 50°F)
Extreme temperature range:	-20°C to 65°C (-4 to 149°F) Tropicalized or IP54 sealed units available
Relative Humidity:	95% (non condensing)
Weight:	Max 0.5 kg
Case Dimensions
Meter Face:	96 x 96 mm (3.8 x 3.8")
Case Depth:	65mm (2.59")
Cut out:	91.4 x 91.4mm (3.6×3.6")

ACCESSORIES

PC-based Setup Parameters & Custom Computation Building Tools

For UTAdvanced Series Controllers

LL50A Parameter Setting Software

The LL50A Parameters Setting Software is designed to build and set parameters, ladder programs, and the like of the UTAdvanced digital indicating
controllers from a PC. The tuning and monitoring of ladder programs are possible during communication with the controllers.

Parameter Setting Function
Tuning Function
Ladder Program Building Function
Network Profile Creating Function

Parameter Setting Display

This function is used to set the parameters of the main unit. There are setup parameters for setting the basic functions of a main unit controller and operation parameters used for setting functions necessary to operate the main unit. It is also possible to set them using the Setting Wizard.

Proper management of the setting file minimizes the downtime during maintenance and inspection.

Program pattern setting function

This function is used to set the program pattern of the UP55A/UP52A

Monitoring function

Tuning/change
With the PC connected to one controller the tuning function tunes PID parameters by displaying PV input values (PV), target setpoints (SP), control output values (OUT), etc. on the PC screen. Furthermore, it also enables the PV, SP, and OUT values to be displayed as trend data and acquired together with the loop information and fixed registers in the Tuning window. Acquired trend
data can be saved in a file of .csv format.

Monitoring/changing registers

The register monitoring function enables the main unit’s registers to be monitored and/or changed during ladder program debugging.

Upload/download/comparison function

This function downloads parameter data, program pattern data and/or ladder program data to the main unit, uploads it from the main unit, and compares it with the main unit data. You can specify
all data, or individual data items, to be uploaded or downloaded.

File management/print function

This function enables you to save created parameter data, program pattern data and/or ladder program data in a file. It also allows data to be printed out for submission to the customer.

Ladder program building function

In ladder programs, there are various computations for input and output signals, and sequence processing can be built using four fundamental arithmetic operations, logical operation, temperature compensation factor calculation, and pressure compensation factor calculation and between input and output contacts. configuration of ladder program. A ladder program consists of three parts: the input ladder calculation executed before control computation, and the output ladder calculation and the user ladder calculation performed after control computation. Each calculation section is respectively executed every control period.
The sequence of calculation is: input, input ladder calculation, control computation, output ladder calculation, user ladder calculation, and output.

Building a ladder program

A ladder program is built by editing the default ladder programs provided for each control mode of system data. It is recommended that the user ladder calculation section be used if a sequence is 2 desired to be configured regardless of controller control computation. As the initial status, the default ladder programs are described in the input ladder calculation and output ladder calculation sections on a control mode basis. No program is written in the user ladder calculation section.