User’s
Manual
Network Solutions Business Divisiion
2-9-32, Naka-cho Musashino-shi, Tokyo 180-8750 Japan
Phone: +81-422-52-7179 Facsimile: +81-422-52-6619
1. NOTICE
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.
2. MOUNTING METHODS
2.1 Wall Mounting
Unfasten the upper and lower stoppers 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.
(51)
40±0.2
(16)
40±0.2
Pitch: 56 or more
(5 or more)
2-ø4.5 or 2-M4
• Mounting Dimensions
Unit: mm
Socket
Stopper
Main unit
Mounting
screw
Note:
• For side-by-side mounting, provide spacing of 5 mm or
more between the products.
• For DIN rail mounting, use the supplied spacer to
provide spacing of 5 mm between the products.
2.2 DIN Rail Mounting
Locate the MVRK 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. For side-by-side mounting, attach the spacer supplied with the product to the DIN
rail to provide spacing between the products.
Slide lock
Spacer
DIN rail
DIN rail
Fit into here
Push
(Rear of the socket)
2.3 Using a Duct
When using a wiring duct, install the duct at least 30 mm away from the top and bottom
faces of the main unit.
2.4 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
• 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 the product and a field-installed device.
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
carrying out wiring work.
CAUTION
• 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.
• If an inductance (L) load such as auxiliary relays or solenoid valves is used,
always insert a spark killer for diminishing sparks, such as a CR filter or a diode in
parallel with the inductance load. Otherwise a malfunction or relay failure may
occur. Refer to the following guidelines for a capacitor and resistor:
Capacitor: 0.5 to 1 µF with respect to a contact current of 1 A
Resistor: 0.5 to 1 Ω with respect to a contact voltage of 1 V
• Transfer contacts for 2 points of alarms consist of an NO contact and an NC
contact.
When using transfer contacts, consideration should be given to the risk of a short
circuit due to contact MBB
*1
resulting from non-concurrent action of the NO and
NC contacts or to a short circuit caused by arcs produced when opening a contact
at large current.
*1 The condition where both NO and NC contacts close when the contact
actuates
• The power line and input/output signal lines should be installed away from noise-
generating sources. Otherwise accuracy cannot be guaranteed.
• 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.
Wiring should be connected to the terminals on the socket of the MVRK. The terminals for
external connections are of M3.5 screws. Use crimp-on lugs for connections to the
terminals.
It is recommended that signal wires have a nominal cross-sectional area of 0.5 mm
2
or
thicker, while the power cable has a nominal cross-sectional area of 1.25 mm
2
or thicker.
Make the wiring resistance of the input terminals 4 and 6 the same.
10 11 1 2
39
8 7 6 5
4
5
4
6
A
B
B
10
11
9
2
3
1
(IN)
10
9
11
2
1
3
7
8
N–
L+
(SUPPLY)
Input signal
Power supply
2 points of alarm outputs 4 points of alarm outputs
(Model code: MVRK-00
-
2
)
Relay
RTD
Relay
Relay
Relay
Relay
Relay
Alarm-2
output
(ALM2)
Alarm-1
output
(ALM1)
Alarm-1output
(ALM1)
Alarm-4 output
(ALM4)
Alarm-2 output
(ALM2)
Alarm-3 output
(ALM3)
(Model code: MVRK-00
-
1
)
NO
NC
COM
NO
NC
COM
NO
COM
NO
NO
COM
NO
Wiring for Monitor Output
If the monitor output code (one of 6, A or P) is specified at the time of order, the following
wiring is possible.
IM 77J04R31-01E
Model MVRK
Digital Limit Alarm (RTD Input Type)
with Active Color PV Display
Keep this manual in a safe place.
IM 77J04R31-01E
1st Edition : Aug. 2006 (YK)
Contents
1. NOTICE
2. MOUNTING METHODS
3. EXTERNAL WIRING
4. PART NAMES OF FRONT PANEL AND
THEIR FUNCTIONS
5. SWITCHING PARAMETERS
6. PARAMETER SETTING ORDER AND
PRECAUTIONS
7. SETTING INPUT-RELATED PARAM-
ETERS
1
8. SETTING ALARM-RELATED PARAM-
ETERS
9. INPUT ADJUSTMENTS
10.
SETTING ACTIVE COLOR PV DISPLAY
11. OTHER PARAMETERS
12. MONITOR OUTPUT
13. TROUBLESHOOTING
14. MAIN SPECIFICATIONS
IM 77J04R31-01E 1st Edition : 2006.08.31-00
CHECKING THE PRODUCT SPECIFICATIONS AND THE CONTENTS OF THE PACKAGE
(1) Model and Specifications Check
Check that the model and specifications indicated on the nameplate attached to the
side face of the main unit are as ordered. (In checking the model and suffix codes, refer
to the main specifications listed on the last page of this manual.)
(2) Contents of the Package
Check that the package contains the following items.
• MVRK: 1
• User’s manual (this manual: IM 77J04R31-01E): 1
Accessories:
• Tag number label: 1 sheet
• Range label: 1 sheet
• Spacer: 1 (used for DIN rail mounting)
A–
COM
B+
–
+
1
3
1
2
3
Monitor output
Analog output
RS-485
communication
(8 pages)
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