background image

Model VJU7

Universal Temperature 

Converter (Multi-function)

(Isolated Single-output and Isolat-

ed Dual-output Types)

GENERAL

This plug-in type Universal Temperature Converter receives 

thermocouple, RTD or mV signal and converts it into isolated DC 

voltage or current signal. 

 • Settings of the input type (thermocouple, RTD or mV) and 

measurement range can be changed within the specified ranges.

 • One of DC voltage signal, DC current signal, communication 

function (RS-485) and alarm output (2 relay contacts) can be 

selected for the output-2 signal. (Isolated Dual-output Type)

 • Various parameters such as input range can be set and 

modified using a PC (VJ77(sold separately)) or Handy 

Terminal (JHT200(sold separately) and the like).

MODEL AND SUFFIX CODES

Model

Suffix codes

Description

VJU7

-0

x x

-U

x x

0

/x

Universal Temperature 

Converter (Multi-function)

Fixed 

code

-0

Always -0

Output 

configuration

1

1 output

2

2 outputs

Power supply

6

100-240 V AC/DC

*1

7

15-30 V DC

*2

Input signal

-U

Thermocouple, RTD, mV signal

Output-1 signal

A

4 to 20 mA DC

6

1 to 5 V DC

Z

(Custom order)

*3

Output-2 signal

A

4 to 20 mA DC

6

1 to 5 V DC

P

Communication function 

(RS485)

T

Alarm output (2 relay contacts)

N

No output-2

Fixed code

0

Always 0

Option

/SN

No socket (with socket if not 

specified)

/C0

HumiSeal coating

*4

/FB

Fuse bypass

*4

/RJCN

No RJC sensor (with RJC 

sensor if not specified)

/DF

Fahrenheit display function

*1: Operating range: 85 to 264V AC/DC

*2: Operating range: 12 to 36V DC

*3: DC voltage signal or DC current signal

*4: When option code /C0 or /FB is specified, the conformity to the safety 

and EMC standards is excluded. CE marking is not applicable.

1.  MOUNTING METHODS 

 CAUTION

 

Plug/disconnect the main unit into/from the 

socket vertically to the socket face.  Otherwise the 

terminals may bend and it may cause bad contact.

 

The converter shall not tilt 5 degrees or more in 

either direction when installed.

 

When the converter is not connected to the socket,  

it is necessary to protect the socket against ingress 

of dust to the connector part.

 

Keep this product in a conductive bag when 

plugged out, during transport or storage.

CAUTIONARY NOTES FOR SAFE USE OF THE 

PRODUCT

This User’s Manual should be carefully read before installing and 

operating the product. Please keep this User’s Manual for future 

reference.

For more information of the safety precautions, please refer to the 

“Precautions on the Use of the JUXTA Series (IM 77J01A00-91Z1)”.

The related manuals and general specifications are shown in the 

table below.

Doc. Name

Doc. Number 

Precautions on the Use of the JUXTA Series (User’s Manual) IM 77J01A00-91Z1

Model  VJU7  Universal  Temperature  Converter 

(User’s Manual)

IM 77J01U07-01E

(This manual)

Model  VJU7  Universal  Temperature  Converter 

(General Specifications)

GS 77J01U07-01E

User’s manuals in the above table are essential parts of the 

product; keep it in a safe place for future reference.

This manual is intended for the following personnel;   

 • Engineers responsible for installation, wiring, and maintenance 

of the equipment.

 •

Personnel responsible for normal daily operation of the 

equipment.

The following symbol is used on the product and in this manual to 

ensure safe usage.

 WARNING

Calls attention to actions or conditions that could 

cause serious or fatal injury to the user, and indicates 

precautions that should be taken to prevent such 

occurrences.

 CAUTION

Calls attention to actions or conditions that could 

cause injury to the user or damage to the instrument 

or property and indicates precautions that should be 

taken to prevent such occurrences.

CHECKING THE PRODUCT  SPECIFICATIONS 

AND THE CONTENTS OF PACKING

(1) Model and Specifications Check 

  Check that the model and specifications indicated on the 

nameplate attached to the side face of the main unit are as 

ordered. 

(2) Contents of the Package

  Check that the package contains the following items: 

 •

VJU7: 1  unit

  Standard Accessories: 

 • Tag number label: 1 sheet

 • Range label: 1 sheet

 •

RJC sensor (when /RJCN is not specified for the optional 

specification): 1

 •

User’s manual (IM 77J01U07-01E, this manual): 1 copy

 •

User’s manual (IM 77J01A00-91Z1): 1 copy

IM 77J01U07-01E

10th Edition: Aug. 2020

User’s

Manual

1

Thank you for purchasing the JUXTA Signal Conditioner.

Please read through this manual before use for correct handling.

2-9-32, Naka-cho Musashino-shi, Tokyo 180-8750 Japan

http://www.yokogawa.com/ns/juxta/im/

You can download the latest manuals from the following website:

Summary of Contents for Juxta VJU7

Page 1: ...TIONARY NOTES FOR SAFE USE OF THE PRODUCT This User s Manual should be carefully read before installing and operating the product Please keep this User s Manual for future reference For more information of the safety precautions please refer to the Precautions on the Use of the JUXTA Series IM 77J01A00 91Z1 The related manuals and general specifications are shown in the table below Doc Name Doc Nu...

Page 2: ...ing or damage Before turning on the power ensure the following Power supply voltage and input signal value applied to the product should meet the required specifications The external wiring to the terminals and wiring to ground are as specifications Wiring should be connected to the terminals on the socket of the product The terminals for external connections are of M3 screws Use crimp on terminal...

Page 3: ...7 select the RTD type to use in D09 RTD TYPE Furthermore for thermocouple or RTD input select the temperature unit in D21 UNIT 5 1 2 Input Range Set the 0 value of input range in D24 INPUT1 L_RNG and the 100 value of input range in D25 INPUT1 H_RNG numerically within the following specified range Input type TC Measurable range C JIS C 1602 IEC 60584 1 ITS 90 TYPE K 270 to 1372 JIS C 1602 IEC 60584...

Page 4: ... delay time from the establishment of return to normal conditions to its output Setting range 0 to 999 seconds Setting resolution 1 second However about 0 2 second is to be added to the set time to prevent wrong operation For example when an alarm ON delay is set to 1 second alarm output is generated if alarm status continues for 1 second or more after the input value exceeds the alarm setpoint Fu...

Page 5: ...n adjustment of output 2 P60 SELF CHK Self check result Q TEST Test 2 Q01 RJC ON OFF of RJC Q04 OUT1 TEST Forced output output 1 Q05 OUT2 TEST Forced output output 2 Q10 ALM1 TEST Forced output alarm 1 Q11 ALM2 TEST Forced output alarm 2 Q60 SELF CHK Self check result 1 The Status is displayed for service personnel to see history records 2 There are items not displayed depending on what input sens...

Page 6: ...llation Appliances portable equipments etc III CAT III For measurements performed in the building installation Distribution board circuit breaker etc IV CAT IV For measurements performed at the source of the low voltage installation Overhead wire cable systems etc EMC standards CE EN 61326 1 Class A Table 2 EN 61326 2 3 The instrument continues to operate at a measurement accuracy of within 20 of ...

Reviews: