YOKOGAWA JUXTA VJB1 User Manual

User's
Model VJB1
CT Converter (RMS)
Manual
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) IM 77J01A00-91Z1
Model VJB1 CT Converter (User's Manual)
Model VJB1 CT Converter (General Specifications) GS 77J01B01-01E
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.
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.
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:
• VJB1: 1 unit
IM 77J01B01-01E
1st Edition Aug. 2021 (YK)
Doc. Number
IM 77J01B01-01E
(This manual)
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/
Standard Accessories:
• Tag number label: 1 sheet
• Socket (T9093FL): 1 piece
(when /SN option is not specified.)
• CT protector (CTG-5): 1 piece
(when "1" is specified for the CT protector code.)
• User's manual (IM 77J01B01-01E, this manual): 1 copy
• User's manual (IM 77J01A00-91Z1): 1 copy
GENERAL
The VJB1 is a compact, plug-in CT converter that converts
sinusoidal AC current signal from a current transformer (CT
output, etc.) into isolated DC voltage or DC current signals.
MODEL AND SUFFIX CODES
Model Suffix codes
VJB1 -0 1 x -x x N x /x
Fixed code -0
1
Output
6
Power supply
7
-A
-B
Input signal
-Z
A
B
C
D
E
F
G
Output signal 1
2
3
4
5
6
7
Z
N
Fixed code
CT protector
Option
*1 Operating range: 85 to 264 V AC/DC
*2 Operating range: 12 to 36 V 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.
*5 When "0" is specified in the CT protector code, the CT protector (CTG-5)
must be ordered separately.
Note: An exclusive User's Manual might be attached to the
products whose suffix codes or option codes contain the code
"Z" (made to customers' specifications). Please read it along
with this manual.
Description
CT Converter (RMS)
Always -0
1 output
100-240 V AC/DC
*1
15-30 V DC
*2
0 to 1 A AC
0 to 5 A AC
Custom order (AC current
signal)
4 to 20 mA DC
2 to 10 mA DC
1 to 5 mA DC
0 to 20 mA DC
0 to 16 mA DC
0 to 10 mA DC
0 to 1 mA DC
0 to 10 mV DC
0 to 100 mV DC
0 to 1 V DC
0 to 10 V DC
0 to 5 V DC
1 to 5 V DC
−10 to +10 V DC
Custom order
*3
Always N
0 Not provided
*5
1 1 piece provided
No socket (with socket if not
/SN
specified)
/C0 Coating
*4
/FB Fuse bypass
*4