YOKOGAWA JUXTA VJP8 Series, User Manual

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

Phone: +81-422-52-7179  Facsimile: +81-422-52-6793

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

You can download the latest manuals from the following website:

IM 77J01P08-01E

5th Edition Aug. 2020 (YK)

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.

Doc. Name

Doc. Number 

Model VJP8 Pulse Rate Converter (User’s Manual) IM 77J01P08-01E

(This manual)

Model VJP8 Pulse Rate Converter (General Specifications)

GS 77J01P08-01E

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 PRODUCT SPECIFICATIONS 

AND PACKAGE

(1) 

Checking the Model and Product Specifications

Check that the model and specifications indicated on the 

nameplate attached to the main unit are as ordered.

(2)  Packaged Items

Check that the package contains the following items:

 • VJP8: 1 unit

 • Tag number label: 1 sheet

 • Range label: 1 sheet

 •

Shunt resistor (when optional code “/R” is specified): 1 

piece

 • User's Manual (this manual): 1 copy

GENERAL

The VJP8 is a plug-in pulse rate converter that receives contact, 

voltage or current pulse from a field, and converts it into isolated 

transistor-contact pulse or contactless AC switch pulse at a preset 

pulse rate. The VJP8 can also be used as a pulse signal repeater 

by setting the pulse rate and pulse width type.

 • Either pulse output or communication function (RS-485) is 

selectable as Output-2.

 •

Various parameters 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

VJP8

-0

□ □ -□ □ □

0

/□

Pulse Rate Converter 

(Multi-function)

-0

Always -0

Output

configuration

1

1 output

2

2 outputs

Power supply

6

100-240 V AC/DC 

(*1)

7

15-30V DC 

(*2)

Transmitter Power 

Supply

-1

12V DC±10%

-2

24V DC±10%

Output-1

1

Open collector

3

Contactless AC switch

Output-2

1

Open collector

3

Contactless AC switch

P

Communication (RS-485)

N

None

0

Always 0

Options

Blank: With socket

/SN

Without socket

/R

With 200 Ω shunt resistor

(Specify when current pulse input.)

*1 Operating range: 85-264 V

*2 Operating range: 12-36 V

Model VJP8

Pulse Rate Converter 

(Multi-function)

(Isolated Single-output and Isolated Dual-

output Types)