Model VJX7
Universal Computing
Unit (Multi-function)
(Isolated Single-output,
Isolated Dual-output Type)
IM 77J01X07-01E
1st Edition Jan. 2000
4th Edition Feb. 2017
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 VJX7 Universal Computing Unit (User’s
Manual)
IM 77J01X07-01E
(This manual)
Model VJX7 Universal Computing Unit (General
Specifications)
GS 77J01X07-01E
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 Number and Specification Check
Check that the model number and specifications shown on the
nameplate attached on the side of the product are as ordered.
(2) Contents of the Packing
Check that the packing contains the following items:
•
VJX7: 1 unit
Standard Accessories:
•
Tag number label: 1 sheet
•
Range label: 1 sheet
•
Shunt registor (for specification of current input): 1 piece
•
User’s manual (IM 77J01X07-01E, this manual): 1 copy
•
User’s manual (IM 77J01A00-91Z1): 1 copy
GENERAL
This Universal Computing Unit, which belongs to the JUXTA
series of signal conditioners, receives DC current or voltage
signals and converts them to pairs of isolated DC voltage or
current signals.
• Output-2 signal is selectable from a DC voltage signal, DC
current signal, communication function (RS-485), and two
relay contacts. (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
VJX7
-x x x -x x x
0
/x
Universal Computing Unit (Multi-
function)
Function
-A
Free program
-B
Moving average computation
-C
Dead time computation
-D
First-order lag computation
-E
First-order lead computation
-F
Uniform-speed response
(Velocity limiter)
-G
Limiter
-H
Velocity computation
-J
Linearizer
-K
Ratio setting
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
-A
0 to 50 mA DC, span is 5 mA or
more
-1
–10 to +10 V DC, span is 0.1 V
or more
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 (RS-485)
T
Contact 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
*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.
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/
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