Yokogawa JUXTA VJX7 - Manual

Instruction
Manual Model VJX7
Universal Computing Unit
IM 77J01X07-01E
IM 77J01X07-01E
1st Edition Jan. 2000
2nd Edition June 2004
1. CAUTIONARY NOTES FOR SAFE
USE OF THE PRODUCT
For the correct use of this product, read through this manual before
use. The following safety symbol is indicated on the product to en-
sure safe use.
CAUTION
If this symbol is indicated on the product, the operator
should refer to the explanation given in the instruction
manual in order to avoid personnel injury or death to either
themselves or other personnel, and/or damage to the instru-
ment. The manual describes the special care the operator
should exercise to avoid shock or other dangers that may re-
sult in injury or loss of life.
The following symbol marks are used only in this manual.
IMPORTANT
Indicates that operating the hardware or software in a par-
ticular manner may damage it or result in a system failure.
NOTE
Draws attention to information that is essential for under-
standing the operations and/or features of the product.
2. CHECKING PRODUCT SPECIFI-
CATIONS 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 main unit, 1
● Instruction Manual (IM 77J01X07-01E), 1
Accessories:
● Tag number label, 1
● Renge label, 1
● Shunt registor (for specification of current input), 1
3. 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 alarm
output (two relay contacts).
4. MOUNTING METHODS
4.1 Wall Mounting
Loosen the main unit-fixing screw of the computing unit to dis-
connect the main unit from the socket. Next, anchor the socket
onto the wall with screws. Then, plug the main unit into the socket
and secure the main unit with the main unit-fixing screw.
Main
unit-fixing
screw
Socket
Main unit
Threaded hole for
fixing the main unit
Mounting
screws
Fig. 4.1
4.1.1 Mounting Dimensions
Unit: mm
29.5 or more
22
±
0.2
59
± 0.3
2-M4 or 2-ø4.5 or more
Fig. 4.2
4.2 DIN Rail Mounting
Locate the computing unit so that the DIN rail fits into the upper
part of the DIN-rail groove at the rear of the socket, and fasten the
socket using the slide lock at the lower part of the socket.
Slide lock
DIN rail
DIN rail
VIEW A (Rear of socket) VIEW A
Fig. 4.3
Keep this manual in a safe place.
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2-9-32, Naka-cho Musashino-shi, Tokyo 180-8750 Japan
Phone: +81-422-52-7179
Facsimile: +81-422-52-6793