YOKOGAWA JUXTA VJQ8 User Manual

YOKOGAWA JUXTA VJQ8 User Manual

Pulse to analog converter (multi-function)

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Userʼs
Model VJQ8
Pulse to Analog Converter
Manual
(Multi-function)
(Isolated Single-output and Isolated Dual-
output Types)
Thank you for purchasing the JUXTA Signal Conditioner.
Please read through this manual before use for correct handling.
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
Precautions on the Use of the JUXTA Series (User's
Manual)
Model VJQ8 Pulse to Analog Converter (User's Manual)
Model VJQ8 Pulse to Analog Converter (General
Specifications)
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.
QR Code
The product has a QR Code pasted for efficient plant
maintenance work and asset information management.
It enables confirming the specifications of purchased products
and user's manuals.
For more details, please refer to the following URL.
https://www.yokogawa.com/qr-code
* QR Code is a registered trademark of DENSO WAVE
INCORPORATED.
IM 77J01Q08-01E
8th Edition July 2023(YK)
Doc. Number
IM 77J01A00-91Z1
IM 77J01Q08-01E
(This manual)
GS 77J01Q08-01E
1
2-9-32, Naka-cho Musashino-shi, Tokyo 180-8750 Japan
Phone: +81-422-52-7179
Facsimile: +81-422-52-6793
You can download the latest manuals from the following website:
http://www.yokogawa.com/ns/juxta/im/
CHECKCHECKING PRODUCT SPECIFICA-
TIONS 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:
VJQ8: 1 unit
Standard Accessories:
Tag number label: 1 sheet
Range label: 1 sheet
Socket (T9093FL): 1 piece
(when /SN option is not specified.)
Shunt resistor:1 piece
(When optional code /R□ is specified)
User's Manual (IM 77J01Q08-01E
User's manual (IM 77J01A00-91Z1): 1 copy
GENERAL
This compact plug-in type pulse-to-analog converter receives
pulse signals from the field and converts them into isolated DC
current or DC voltage signals.
this manual): 1 copy
,

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Summary of Contents for YOKOGAWA JUXTA VJQ8

  • Page 1 Types) Phone: +81-422-52-7179 Facsimile: +81-422-52-6793 You can download the latest manuals from the following website: http://www.yokogawa.com/ns/juxta/im/ Thank you for purchasing the JUXTA Signal Conditioner. Please read through this manual before use for correct handling. IM 77J01Q08-01E 8th Edition July 2023(YK)
  • Page 2: Model And Suffix Codes

    MODEL AND SUFFIX CODES 1.1 Wall Mounting Model Suffix codes Description Loosen the main unit-fixing screw of the product and pull out the Pulse to Analog Converter main unit from the socket. Fix the socket on the wall with screws. VJQ8 (Multi-function) Next, insert the main unit into the socket and fasten the main unit...
  • Page 3: External Wiring

    EXTERNAL WIRING External Receiving Resistor (Shunt Resistor) for Current Pulse Input Option code Resistance Part No. Rated power WARNING /R100 100 Ω E9786WW /R200 220 Ω E9786WS ● To avoid the risk of an electric shock, turn off the /R510 510 Ω...
  • Page 4: Setting Parameters

    5.2.2 Communication Address SETTING PARAMETERS Set the address number of the isolator numerically in a range Set the parameters using a PC (VJ77 Parameter Setting Tool) of 1 to 99 in [F02: ADDRESS]. Refer to “8. LIST OF PARAMETERS” in this manual and the User’s Manual for VJ77 PC-based Parameters Setting Tool (IM 5.2.3 Baud Rate 77J01J77-01E) .
  • Page 5: List Of Parameters

    DESCRIPTION OF ALARM ACTIONS DISPLAY2 Display2 (*3) INPUT1 Input value 1 (*1) This chapter describes examples of alarm actions under the OUTPUT1 Output value 1 following conditions. OUTPUT2 Output value 2 Item Alarm-1 Alarm-2 ALM1 STATUS Alarm-1 status Parameter Setpoint Parameter Setpoint ALM2 STATUS Alarm-2 status...
  • Page 6: Maintenance

    10 to 15 minutes of warm-up before it meets the specified performance. Entrance Cable 9.1 Calibration Apparatus Outlet • A calibrator (YOKOGAWA CA500 or equivalent) • A precision resistor of 250 Ω ±0.01%, 1W Measurement Description Remarks •...

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