Yokogawa JUXTA MU5 - Manual (Page 2)

2 IM 77J04U05-01E 3rd Edition Oct. 15, 2007-00
1. MOUNTING METHOD
NOTE
Plug/disconnect the main unit into/from the socket
vertically to the socket face. Otherwise the terminals may
bend and it may cause bad contact.
1.1 Wall Mounting
Unfasten the upper and lower stoppers of the converter to disconnect
the main unit from the socket. Next, anchor the socket onto the wall
with two M4 screws. Then, plug the main unit into the socket and se-
cure the main unit with the upper and lower stoppers.
Socket
Stopper
Main unit
Mounting
screws
Note:
• When mounting the units
close together, leave a space
of at least 5 mm between
them.
• Use the supplied spacer to
keep a space of 5 mm for
DIN rail mounting.
Unit: mm
5 or more
2- л 4.5 or 2-M4
40 Ϯ 0.2
(51)
(85)
Pitch: 56 or more
[Mounting Dimensions]
Socket
1.2 DIN Rail Mounting
Locate the converter 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
Spacer
DIN rail
DIN rail
Fit into here
Push
(Rear of the socket)
1.3 Using Ducts
Wiring ducts should be installed at leaset 30 mm away from the top or
bottom of the main unit.
2. INSTALLATION LOCATIONS
● Avoid the following environments for installation locations:
Areas with vibration, corrosive gases, dust, water, oil, solvents, di-
rect sunlight, radiation, a strong electric field, and/or a strong
magnetic field
Installation altitude: 2000 m or less above sea level.
● If there is any risk of a surge being induced into the power line
and/or signal lines due to lightning or other factors, a dedicated
lightning arrester should be used as protection for both this con-
verter and a field-installed device.
● Operating temperature/humidity range: 0 to 50 Њ C/5 to 90%RH (no
condensation)
3. EXTERNAL WIRING
WARNING
To avoid the risk of an electric shock, turn off the power
supply and use a tester or similar device to ensure that no
power is supplied to a cable to be connected, before carring
out wiring work.
Wires are connected to the terminals of the converter’s socket. M3.5
screw terminals are provided for the connection of external signals. At-
tach a crimp-on lug to each wire for connection to the terminals.
● Recommended cables: A nominal cross-sectional area of 0.5 mm 2
or thicker for signal cables, and that of 1.25 mm 2 or thicker for
power cables.
1
2
6
7
8
L +
N −
GND
+
−
Power Supply
Output
3
4
+
−
mV
RJC
sensor
Input Signal (Input type can be changed.)
RTD
3
4
5
RJC
+
−
TC
3
4
5
A
B
B
Signal
line
RJC
sensor
Terminal
Recommended crimp-on lug size (Unit: mm)
6.5 or more
ø3.7 to 4.0
7 or less
* Attach the RJC sensor correctly as shown in the figure above
only for thermocouple input.
IMPORTANT
● Connect the RJC sensor at the correct position as shown
above. Otherwise temperatures cannot be measured
correctly.
● Connect the RJC sensor so that it overlaps the input sig-
nal line.
● Handle the RJC sensor lead wire with care to prevent dis-
connection.
● The power line and input/output signal lines should be
installed away from noise-generating sources. Other
wise accuracy cannot be guaranteed.
● The grounding resistance must be 100 Ω (JIS Class D
grounding). The length and thickness of the grounding
cable should be as short and thick as possible. Directly
connect the lead from the ground terminal (terminal no.
6) of the product to the ground. Do not carry out daisy-
chained inter-ground terminal wiring.
● Use of the product ignoring the specifications may cause
overheating or damage. Before turning on the power, en-
sure the following:
(a)Power supply voltage and input signal value applied to the
product should meet the required specifications.
(b)The external wiring to the terminals and wiring to ground
are as specifications.
● Do not operate the product in the presence of flammable
or explosive gases or vapors. To do so is highly danger-
ous.
● The product is sensitive to static electricity; exercise
care in operating it. Before you operate the product,
touch a nearby metal part to discharge static electricity.