Yokogawa MA5 User Manual
User’s
Manual
Model MA5
Distributor
(Free Range Type)
IM 77J04A05-01E
Please read through this User’s Manual before use for correct handling.
Please keep this User’s Manual for future reference.
IM 77J04A05-01E
1st Edition Jul. 2005 (YK)
CAUTIONARY NOTES FOR SAFE USE OF THE PRODUCT
This User’s Manual should be carefully read before installing and operating the product. The following symbol is used on the product and in
this manual to ensure safe use.
This symbol is displayed on the product when it is
necessary to refer to the User’s Manual for information on
personnel and instrument safety. This symbol is displayed
in the User’s Manual to indicate precautions for avoiding
danger to the operator, such as an electric shock.
The following symbols are used only in this manual.
IMPORTANT
Indicates that operating the hardware or software in a
particular manner may cause damage or result in a system
failure.
NOTE
Draws attention to essential information for understanding
the operations and/or functions of the product.
MODEL AND SUFFIX CODES
Model
Output
1: 1 output
Power supply
1: 15-40 V DC (Operating range: 12 to 48 V)
6: 100-240 V AC/DC (Operating range: 85 to 264 V)
Input signal
A: 4 to 20 mA DC
Output signal
A: 0 to 20 mA DC Span is 5 mA or more
B: 0 to 5 mA DC Span is 1 mA or more
1: −10 to +10 V DC Span is 0.1 V or more
2: −100 to +100 mV DC Span is 10 mV or more
Z: (Custom order)
Customized current signals or voltage signals
Breakpoint linearization
0: Not available
1: Available
Optional specification
/SN: Without socket
Network Solutions Business Division
2-9-32, Naka-cho Musashino-shi, Tokyo 180-8750 Japan
Phone: +81-422-52-7179 Facsimile: +81-422-52-6793
MA5 -01 -A 0 /
CHECKING PRODUCT SPECIFICATIONS AND PACKAGED ITEMS
(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:
● MA5: 1
● Spacer (for DIN rail mounting): 1
● Range label: 1
● User’s Manual (this manual: IM 77J04A05-01E): 1
GENERAL
This plug-in type distributor is used in combination with a two-wire type
transmitter to convert the transmitter’s 4 to 20 mA DC signals into DC
current or DC voltage signals.
1
1. MOUNTING METHOD
t
y
ernal
y
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 distributor 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 secure the main unit with the upper and lower stoppers.
Stopper
Main unit
Socket
Mounting
screws
[Mounting Dimensions]
Socket
2-4.5 or 2-M4
Pitch: 56 or more
5 or more
400.2
(51)
1.2 DIN Rail Mounting
Locate the distributor 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.
Unit: mm
Note:
• When mounting the units
close together, leave a space
of at least 5 mm between
them.
(85)
• Use the supplied spacer to
keep a space of 5 mm for
DIN rail mounting.
2. INSTALLATION LOCATIONS
● Avoid the following environments for installation locations:
Areas with vibration, corrosive gases, dust, water, oil, solvents, direct 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 distributor and a field-installed device.
● Operating temperature/humidity range: 0 to 50C/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 distributor’s socket. M3.5
screw terminals are provided for the connection of external signals. Attach a crimp-on lug to each wire for connection to the terminals.
● Recommended cables: A nominal cross-sectional area of 0.5 mm
or thicker for signal cables, and that of 1.25 mm2 or thicker for
power cables.
Power suppl
GND
6
L+
7
N−
8
Input
When using
int
power suppl
Outpu
When using
external
power supply
PS+
5
3
−−
4
COM
+
−
Example to construct
Intrinsically Safe System
using Zener Barrier
PS+
+
5
+
−
3
4
−
COM
5
3
4
2
Fit into here
DIN rail
Push
DIN rail
Spacer
(Rear of the socket)
Slide lock
1.3 Using Ducts
Wiring ducts should be installed at leaset 30 mm away from the top or
bottom of the main unit.
IMPORTANT
●
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 daisychained inter-ground terminal wiring.
●
Use of the product ignoring the specifications may
cause overheating or damage. Before turning on the
power, ensure 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 dangerous.
●
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.
2
IM 77J04A05-01E 1st Edition Jul 29, 2005-00
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