YOKOGAWA JUXTA MVRK User manual

2-9-32, Naka-cho Musashino-shi, Tokyo 180-8750 Japan
Phone: [phone] Facsimile: [phone]
http://www.yokogawa.com/ns/juxta/im/
You can download the latest manuals from the following website:
User’s
Manual
1
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.
The related manuals and general specications are shown in the table below.
Doc. Name Doc. Number
Model MVRK Limit Alarm for RTD Input (Userʼs Manual) IM 77J04R31-01E (This manual)
Model MVRK Limit Alarm for RTD Input (General Specications) GS 77J04R31-01E
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.
The following symbols are used only in this manual.
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 THE PACKAGE
(1) Checking the Model and Product Specications
Check that the model and specications indicated on the nameplate attached to the side face
of the main unit are as ordered. (In checking the model and su󰀩x codes, refer to the main
specications listed on the last page of this manual.)
(2) Packaged Items
Check that the package contains the following items.
• MVRK: 1
• Tag number label: 1 sheet
• Range label: 1 sheet
• Spacer: 1 (used for DIN rail mounting)
• Monitor output terminal connector: 1 (supplied when monitor output code 6, A, P is specied)
• User’s manual (this manual: IM 77J04R31-01E): 1
GENERAL
This plug-in type Limit Alarm for RTD input receives RTD signal. It is equipped with Active color PV
display (PV display color changing function).
MODEL AND SUFFIX CODES
Model Su󰀩x codes Description
MVRK -0 0 [] -[] [] [] [] /[][] Limit Alarm for RTD Input
Type -0 General use type
0Always 0
Power Supply 324 V DC±10%
6100-240 V AC/DC (Operating range: 85 to 264 V)
Input Signal -U RTD input
-Z Custom order
Output Signal 1Alarm output (transfer contact [1a1b] ), 2 points
2Alarm output (NO contact), 4 points
Monitor Output
61 to 5 V DC
A4 to 20 mA DC
PCommunication function (RS-485)
NNo monitor output
Burnout Function
UUP
DDOWN
NOFF
Optional Specication
/SN No socket (with socket if not specied)
/C0 Coating
/FB Fuse bypass
1. MOUNTING METHODS
CAUTION
●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.
●The converter shall not tilt 5 degrees or more in either direction when installed.
●When the converter is not connected to the socket, it is necessary to protect the
socket against ingress of dust to the connector part.
1.1 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.
1.2 DIN Rail Mounting
Locate the MVRK so that the DIN rail ts 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)
1.3 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. INSTALLATION LOCATIONS
• Avoid the following environments for installation locations:
Areas with vibrations, corrosive gases, dust, water, oil, solvents, direct sunlight, radiation, a strong
electric eld, and/or a strong magnetic eld, direct radiant heat, wind, temperature uctuation,
2000 m or more 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 unit and
a eld-installed device.
• Operating temperature/humidity range: 0 to 50°C (0 to 40 °C for multiple mounting)/5 to 90%RH
(no condensation)
• Continuous vibration: (at 5 to 9 Hz) Half amplitude of 3 mm or less (at 9 to 150 Hz) 9.8m/s2or
less, 1 oct/min for 90 minutes each in the three axis directions
• Impact: 98 m/s2 or less, 11 ms, 3 axes, 6 directions, 3 times each
• Install in a place where rigidity is secured.
3. TRANSPORT AND STORAGE CONDITIONS
• Temperature: -25 to 70°C
• Temperature change rate: 20°C per hour or less
• Humidity: 5 to 95% RH (no condensation)
CAUTION
Keep this product in a conductive bag when plugged out, during transport or storage.
Model MVRK
Limit Alarm for RTD Input
(with Active Color PV Display)
IM 77J04R31-01E
2nd Edition Oct. 2019 (YK)
Please read through this User’s Manual before use for correct handling. Please keep this User’s
Manual for future reference.
QR code
The product may have a QR Code pasted for e󰀩cient plant maintenance work and asset information
management. It enables conrming the specications of purchased products and user’s manuals.
For more details, please refer to the following URL.
https://www.yokogawa.com/qr-code
* QR Code is a registered trademark of DENSO WAVE INCORPORATED.

IM 77J04R31-01E 2nd Edition Oct. 15, 2019-00
2
4. EXTERNAL WIRING
WARNING
●To avoid the risk of an electric shock, turn o󰀨 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.
●Do not operate the product in the presence of ammable or explosive gases or
vapors. To do so is highly dangerous.
●Use of the product ignoring the specications may cause overheating or damage.
Before turning on the power, ensure the following:
•Power supply voltage and input signal value applied to the product should meet the
required specications.
•The external wiring to the terminals and wiring to ground are as specications.
CAUTION
●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.
●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 lter 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
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 mm2 or thicker, while
the power cable has a nominal cross-sectional area of 1.25 mm2or 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
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)
MVRK-00[]-[]1[][] MVRK-00[]-[]2[][]
NO
NC
COM
NO
NC
COM
NO
COM
NO
NO
COM
NO
4.1 Wiring for Monitor Output
If the monitor output code (one of 6, A or P) is specied at the time of order, the following wiring is
possible.
A–
COM
B+
–
+
1
1
3
1
2
3
2 3
Monitor output
Analog output RS-485
communication
5. PART NAMES OF FRONT PANEL AND THEIR FUNCTIONS
CAUTION
The front panel of the product is constructed to prevent opening. Forcing it open will
result in breakage.
(1) PV (measured value)
display
Place for adhering
the tag number label
(2) DATA display
(3) Alarm indicator lamp
2 points of alarms: 2 lamps
4 points of alarms: 4 lamps
(7) Monitor output terminal (option)
(6) UP/DOWN key
(5) SET/ENT
key
(4) READY
lamp
Part Name Function
(1) PV (measured value)
display
Displays a measured value during operation.
Displays a parameter symbol when a parameter is set.
Displays an error code in the event of an error.
(2) DATA display
Displays the setpoint of a variety of parameters.
Displays an alarm type in the event of an alarm. (Not displayed during
normal operation.)
• Alarm display (when alarm 1 is the PV high-limit alarm)
Alarm-1
Alarm-2
Alarm-3 *
Alarm-4 *
Display position
of alarm action
type
Alarm action Alarm action type
No alarm (normal) None
PV high limit
alarm
PV low limit
alarm
Other alarms
*Alarm-3 and Alarm-4 are 4 points alarm only.
(3) Alarm indicator lamp In the event of an alarm, AL1 to AL4 (alarm 1 to alarm 4) light up.
(4) READY lamp Lights up when the power is turned on.
(5) SET/ENT key
Used to switch parameter indication or accept a setpoint.
Pressing this key for more than 3 seconds allows you to select the
Operation Parameter Screen and Setup Parameter Screen alternately.
(6) UP/DOWN key
Used to change the setpoint of a parameter.
Pressing the key increases a numerical value.
Pressing the key decreases a numerical value.
Holding down a key accelerates the speed of change.
(7) Monitor output terminal
(Two-piece connector)
Outputs 1 to 5 V DC, 4 to 20 mA DC or RS-485 communication signal.
(To be added only when the monitor output has been specied at the
time of order.)
6. PARAMETER
When setting a parameter, begin with Step 1 below and continue in sequence.
Range code No.
(IN)
You can begin with any of these parameters.
Alarm-1 action Alarm-2 action Alarm-3 action Alarm-4 action
(AL1) (AL2) (AL3) (AL4)
After that, you
may proceed with
settings beginning
at any parameter.
Step 2Step 1
CAUTION
●If the settings for the range code No. (IN) or alarm actions (AL1 to AL4) are changed,
the relevant parameter setpoints shown in the table below will be initialized. To
change a parameter setpoint, begin with Step 1 above and continue in sequence.
●Do not turn o󰀨 the power of this product while changing the parameters of this
product or adjusting this product.
Parameters to be initialized if the range code No. (IN) is changed
Alarm setpoints (A1 to A4), hysteresis (HY1 to HY4), setpoint (SP)
Max. and min. monitor output values (RTH, RTL)
Input adjustment point LOW (BL) and HIGH (BH), input adjustment LOW (AL) and HIGH (AH), wiring resistance
correction (WIR)
High and low limits for PV display color change (PCH, PCL)
Parameters to be initialized if the type of alarm action (AL1 to AL4) is changed
The alarm setpoint (A1 to A4) corresponding to each alarm action (AL1 to AL4)
(Example: If AL1 is changed, A1 will be initialized.)
Parameters to be initialized if the type of PV display color mode (PCM) is changed
High and low limits for PV display color change (PCH, PCL)

IM 77J04R31-01E 2nd Edition Oct. 15, 2019-00
3
7. SWITCHING PARAMETERS
CAUTION
●If the alarm action (AL1 to AL4) is set to "OFF," the relevant alarm setpoint (A1 to A4)
is not displayed.
●If no keystroke is made for more than 2 minutes, the PV screen automatically
appears, regardless of the parameter displayed. In this case, if a data change is in
progress (the decimal point is blinking), the data being changed becomes invalid and
the PV screen appears with the previous data displayed as is. However, this action
does not take place if the parameter "MAN", "ZER" or "SPN" is being displayed.
Operation Parameter Screen Setup Parameter Screen 1 Setup Parameter Screen 2
To the Operation Parameter Screen
A
AA
Press this key for more than 3 sec.
Press this key
for more than 3 sec.
Press this key
for more than 3 sec.
is displayed when the PV display color mode (PCM) has
been set to 6, 7, 8 or 9.
A
D
C
B
B
CD
D
C
or
Press the DOWN key to display "-1"
on the DATA display and then press
the SET/ENT key.
Power
ON
Displays a measured value.
In this manual, this screen is called the "PV
(measured value) screen."
Alarm-1 setpoint (A1)
Sets the alarm-1 setpoint.
Alarm-2 setpoint (A2)
Sets the alarm-2 setpoint.
Alarm-3 setpoint (A3)
(Displayed only for 4 points of alarms)
Sets the alarm-3 setpoint.
Alarm-4 setpoint (A4)
(Displayed only for 4 points of alarms)
Sets the alarm-4 setpoint.
Alarm-1 action (AL1)
Sets the direction of alarm-1 action.
(See the Alarm Action Type Codes table in Section 9.1.)
Range code No. (IN)
Sets the range code number (input type).
Measured input bias (BS)
This parameter is set to correct a measured
input value.
PV display color mode (PCM)
Sets the Active color PV display.
Economical mode time (ECO)
This parameter is set to extinguish the display
(not including the READY and alarm lamps) if no
keystroke is made for a specified time.
Input adjustment reset (RST)
Used to reset an input adjustment value.
Input adjustment point LOW (BL)
Sets the reference value corresponding to
0% of the input when an input adjustment is
made.
Input adjustment LOW (AL)
Adjusts the 0% value of an input.
Input adjustment point HIGH (BH)
Sets the reference value corresponding to
100% of the input when an input adjustment
is made.
Input adjustment HIGH (AH)
Adjusts the 100% value of an input.
Alarm-2 action (AL2)
Sets the direction of alarm-2 action.
(See the Alarm Action Type Codes table in Section 9.1.)
Alarm-3 action (AL3)
(Displayed only for 4 points of alarms)
Sets the direction of alarm-3 action.
(See the Alarm Action Type Codes table in Section 9.1.)
Alarm-4 action (AL4)
(Displayed only for 4 points of alarms)
Sets the direction of alarm-4 action.
(See the Alarm Action Type Codes table in Section 9.1.)
Alarm-1 hysteresis (HY1)
Sets the hysteresis of alarm 1.
Alarm-2 hysteresis (HY2)
Sets the hysteresis of alarm 2.
Alarm-3 hysteresis (HY3)
(Displayed only for 4 points of alarms)
Sets the hysteresis of alarm 3.
Alarm-4 hysteresis (HY4)
(Displayed only for 4 points of alarms)
Sets the hysteresis of alarm 4.
Alarm ON delay (OND)
Sets the condition monitoring time from the
establishment of alarm conditions to its
output.
Alarm OFF delay (OFD)
Sets the condition monitoring time from the
establishment of return-to normal conditions
to its output.
Setpoint (SP)
When using a deviation alarm, this
parameter is set to the value treated as the
reference for deviations.
Key lock (LOC)
This parameter is set when change of parameter
settings (all parameters or parameters other than the
operation parameters) is locked to prevent wrong
operations.
Visibility of monitor output adjustment screen (MON)
Sets the visibility of the screen for adjusting monitor
output. Pressing the SET/ENT key with "ON"
displayed on the DATA display causes the
adjustment screen to appear.
Forced output of a monitor output value (MAN
)
Used to force a value equivalent to -25% to +125%
of an analog output value to output, regardless of
input.
Monitor output zero adjustment (ZER )
Adjusts the zero point of the monitor output.
Monitor output span adjustment (SPN
)
Adjusts the span of the monitor output.
Maximum monitor output value (RTH)
This parameter is set to treat any value as
the maximum output value with respect to
the input range.
High limit for PV display color change (PCH)
Sets the high limit for PV limit mode or SP
deviation mode of Active color PV display.
Low limit for PV display color change (PCL)
Sets the low limit for PV limit mode or SP
deviation mode of Active color PV display.
Minimum monitor output value (RTL)
This parameter is set to treat any value as
the minimum output value with respect to the
input range.
Communication protocol (PSL)
Sets the communication protocol.
Communication address (ADR)
Sets the communication address.
Baud rate (BPS)
Sets the baud rate.
Parity (PRI)
Sets the parity.
Stop bit (STP)
Sets the stop bit.
Data length (DLN)
Sets the data length.
Chapter 8
Chapter 12
Chapter 12
Chapter 11
Burnout action (BSL)
Sets the burnout action.
Wiring resistance correction (WIR)
Used when correcting wiring resistance.
Chapter 8
Chapter 8
Chapter 10
Chapter 10
Chapter 10
Chapter 10
Chapter 10
Section 13.1
Section 13.1
Section 13.1
Section 13.1
Section 13.1
Section 13.1
Section 13.2
Section 13.2
Section 13.2
Section 13.2
Section 13.2
Section 13.2
Chapter 9
Chapter 9
Chapter 9
Chapter 9
Chapter 9
Chapter 9
Chapter 9
Chapter 9
Chapter 9
Chapter 9
Chapter 9
Chapter 9
Chapter 9
Chapter 9
Chapter 12
To the Setup Parameter Screen 1
To the Operation Parameter Screen
Chapter 9
To the Setup Parameter Screen 2
Bis displayed when the monitor output (analog) has been
specified.
is displayed when the
monitor output (RS-485
communication) has been
specified.
The symbol indicates a reference chapter/section in this manual.
AChapter 11
Chapter 11
is displayed
when the monitor
output (analog) has
been specified.

IM 77J04R31-01E 2nd Edition Oct. 15, 2019-00
4
8. SETTING INPUT-RELATED PARAMETERS
8.1 Setting Ranges and Factory-Set Values of Input-Related Parameters
Setup Parameter Screen 2
Parameter
Symbol Parameter Name Setting Range Factory-Set
Value
Range code No.
(IN) Range code No. Input type Instrument input range
Pt100
(ITS-90)
-199.9 to 660.0 °C
-199.9 to 200.0 °C
Pt100
(IPTS-68)
-199.9 to 660.0 °C
-199.9 to 200.0 °C
JPt100
(JIS’89)
-199.9 to 510.0 °C
-199.9 to 190.0 °C
Pt50(JIS’81) -199.9 to 649.0 °C
Pt100
(ITS-90)
80.0 to 930.0 K
80.0 to 470.0 K
Pt100
(IPTS-68)
80.0 to 930.0 K
80.0 to 470.0 K
JPt100
(JIS’89)
80.0 to 780.0 K
80.0 to 460.0 K
Pt50(JIS’81) 80.0 to 920.0 K
61
or
the range code
No. specied
at the time of
oreder
Burnout action
(BSL)
OFF (0), UP (1), DOWN (2) According to
the su󰀩x codes
specied at the
time of order
Wiring resistance
correction
(WIR)
OFF (0), ON (1) OFF
8.2 Setting Range Code No.
This section describes an example of setting the range code No. (IN) to “62” (instrument input range:
-199.9 to 200.0°C).
Step 1
Press fore more than
3 sec.
Press .
Press .
When you press the SET/ENT key for more than 3 sec. with the
Operation Parameter Screen displayed, the Setup Parameter
Screen 1 appears.
When the power is turned on, the PV screen of the Operation
Parameter Screen appears.
Press the UP or DOWN key to display "62" on the DATA display.
Press the SET/ENT key to accept range code No. "62."
This completes the process for setting the range code No.
Press the SET/ENT key again for more than 3 sec.
This causes the Operation Parameter Screen to appear.
Press this key for
more than 3 sec.
This completes the process for
setting the range code No.
The decimal point blinks during
data change.
Press the SET/ENT key to display parameter "LOC."
Press the DOWN key to display "-1" on the DATA display.
Press the SET/ENT key to display parameter "IN" for setting the
range code No. in the Setup Parameter Screen 2.
Setup Parameter Screen 2
Operation Parameter ScreenOperation Parameter Screen
The decimal point blinks during
data change.
Press or
to display "62."
Press to display "LOC."
Press to display "-1."
Power ON
To the Operation Parameter Screen
Setup Parameter Screen 1
8.3 Setting Burnout Action
This section describes an example of setting the burnout action to “UP.”
The procedure below begins with the condition in which the Setup Parameter Screen 2 is displayed.
Press .
This completes the process for
setting the burnout action.
The decimal point blinks during
data change.
Press the SET/ENT key to display parameter "BSL."
Press the UP or DOWN key to display "UP" on the DATA display.
Press the SET/ENT key to accept burnout "UP."
This completes the process for setting the burnout action.
Setup Parameter Screen 2
Press or
to display "UP."
Press to display "BSL."
8.4 Correcting Wiring Resistance
This section describes how to correct wiring resistance when an error occurs due to the inuence of
the input wiring resistance.
Correct wiring resistance after completing the wiring.
5
4
6
A
B
B
Short-circuit at the cable end.
MVRK
The procedure below begins with the condition in which the Setup Parameter Screen 2 is displayed.
Press the SET/ENT key to display parameter "WIR."
Press the UP or DOWN key to display "ON" on the DATA display.
Press the SET/ENT key to correct the wiring resistance.
Press .
This completes the process for
correcting the wiring resistance.
The decimal point blinks during
data change.
Press or
to display "ON."
Press to display "WIR."
Setup Parameter Screen 2
CAUTION
If the burnout action setting is changed, the wiring resistance correction is
automatically set to OFF (0).
Correct the wiring resistance again after changing the burnout action setting.
9. SETTING ALARM-RELATED PARAMETERS
9.1 Setting Ranges and Factory-Set Values of Alarm-Related Parameters
The followings are the factory-set values for the range code No. 61.
They may di󰀨er depending on the range code No. specied at the time of order.
Operation Parameter Screen
Parameter
Symbol Parameter Name Setting Range Factory-Set Value
Alarm-1 setpoint
(A1)
Within the instrument input range. 20.0
Alarm-2 setpoint
(A2)
2 points of alarms: 80.0
4 points of alarms: 30.0
Alarm-3 setpoint
(A3) 70.0
Alarm-4 setpoint
(A4) 80.0
Setup Parameter Screen 1
Parameter
Symbol Parameter Name Setting Range Factory-Set Value
Alarm-1 action
(AL1)
See the Alarm Action Type Codes table. 2
Alarm-2 action
(AL2)
2 points of alarms: 1
4 points of alarms: 2
Alarm-3 action
(AL3) 1
Alarm-4 action
(AL4) 1
Alarm-1 hysteresis
(HY1)
The value resulting from adding a hysteresis value to an
alarm setpoint should be within the instrument input range. 3.0
Alarm-2 hysteresis
(HY2) 3.0
Alarm-3 hysteresis
(HY3) 3.0
Alarm-4 Hysteresis
(HY4) 3.0
Alarm ON delay
(OND)
Setting range: 0 to 999 sec.
Setting resolution: 1 sec. 0
Alarm OFF delay
(OFD)
Setting range: 0 to 999 sec.
Setting resolution: 1 sec. 0
Setpoint
(SP)
Within the instrument input range. Minimum value of
the instrument input
range
<Alarm Action Type Codes>
Alarm
Type Alarm Action
Alarm Action Type Code
Without Stand-by
Action
With Stand-by
Action
Deenergized
under
Normal
Condition
Energized
under
Normal
Condition
Deenergized
under
Normal
Condition
Energized
under
Normal
Condition
PV high-
limit alarm
Hysteresis
Alarm
Alarm setpoint
Normal
PV
PV low-limit
alarm
PV
Hysteresis
Normal
Alarm setpoint
Alarm
Deviation
high-limit
alarm
PV
Hysteresis
Alarm
Setpoint
Deviation setpoint
Normal
Deviation
low-limit
alarm
PV
Hysteresis
Normal
Setpoint
Deviation setpoint
Alarm
Deviation
high and
low-limit
alarm
PV
Hysteresis
Hysteresis
Setpoint
Deviation setpointDeviation setpoint
Alarm
Normal
Alarm
Deviation
within high
and low-
limit alarm
PV
HysteresisHysteresis
Setpoint
Deviation setpointDeviation setpoint
AlarmNormal Normal
No alarm
(Parameters A1 to A4 are not displayed.)

IM 77J04R31-01E 2nd Edition Oct. 15, 2019-00
5
Low-limit
alarm
setpoint
Power ON
PV
Time
Normal
Regarded
as normal Abnormal
(Alarm ON)
If an alarm type code with
stand-by action is set, alarm
action is turned off during the
start-up control.
This function is useful at power
ON or when changing the alarm
type.
Stand-by Action
9.2 Setting Alarm Output-Related Parameters
This section describes an example of setting the alarm-1 action (AL1) to “12” (PV low-limit alarm, with
stand-by action), alarm-1 setpoint (A1) to “0” (°C), alarm-1 hysteresis 1 (HY1) to “5” (°C), alarm ON
delay (OND) to “5” (sec.) and alarm OFF delay (OFD) to “5” (sec.) with the range code No. (IN) set
to “62” (instrument input range: -199.9 to 200.0°C). (Parameters relating to alarm 2 to alarm 4 can be
set in the same way as the procedure below.)
Press or
to display "12."
To the Setup Parameter
Screen 1
When the SET/ENT key is pressed for more than 3 sec.
with the Operation Parameter Screen displayed, the Setup
Parameter Screen 1 appears with parameter "AL1"
displayed.
When the power is turned on, the PV screen of the
Operation Parameter Screen appears.
Press the UP or DOWN key to display "5.0" (°C) on the
DATA display.
Press the SET/ENT key to accept alarm-1 hysteresis "5.0"
(°C).
Press the SET/ENT key to display parameter "OND."
Press for more
than 3 sec.
Press .
This completes the process for
setting the alarm-1 hysteresis.
This completes the process for
setting the alarm-1 action.
This completes the process for
setting the alarm-1 setpoint.
The decimal point blinks during
data change.
Press the UP or DOWN key to display "5" (sec.) on the
DATA display.
Press the SET/ENT key to accept alarm ON delay "5"
(sec).
Press the SET/ENT key again to display parameter
"OFD."
The decimal point blinks during
data change.
The decimal point blinks during
data change.
The decimal point blinks during
data change.
Press the UP or DOWN key to display "5" (sec.) on the
DATA display.
Press the SET/ENT key to accept alarm OFF delay "5"
(sec).
Press the SET/ENT key for more than 3 sec.
This causes the Operation Parameter Screen to appear.
This completes the process for
setting the alarm OFF delay.
The decimal point blinks during
data change.
Press the UP or DOWN key to display "12" on the DATA
display.
Press the SET/ENT key to accept alarm-1 action "12."
Then to set the alarm setpoint, press the SET/ENT key for
more than 3 sec. to display the Operation Parameter
Screen. (To set the hysteresis parameter and successive
settings, press the SET/ENT key to display the next
parameter.)
Setup Parameter Screen 1
Setup Parameter Screen 1
Operation Parameter Screen
Press the SET/ENT key to display parameter "A1."
Press the UP or DOWN key to display a low-limit alarm
value "0.0" (°C) that is set to the DATA display.
Press the SET/ENT key to accept low-limit alarm "0.0"
(°C).
Operation Parameter Screen
To the Operation Parameter Screen
Power ON
Step 2
Setting the alarm action Setting the alarm setpoint Setting the hysteresis Setting the alarm ON delay Setting the alarm OFF delay
Press this key for
more than 3 sec.
Press
to display "A1."
Press or
to display "0.0."
Press .
Press to display
"OND."
Press .
Press or
to display "5.0."
Press or
to display "5."
Press .
Press .
Press or
to display "5."
Press .
Press for more
than 3 sec.
This completes the process for
setting the alarm ON delay.
10. INPUT ADJUSTMENTS
10.1 Setting Ranges and Factory-Set Values of Adjustment-Related Parameters
Setup Parameter Screen 2
Parameter
Symbol Parameter Name Setting Range Factory-Set Value
Input adjustment
reset (RST)
OFF (0) or ON (1)
(This parameter is used (set to ON) to reset adjusted
values.)
OFF
Input adjustment
point LOW (BL) ±10% of the instrument input range span (and BL < BH) Minimum value of the
instrument input range
Input adjustment
LOW (AL) ±10% of the instrument input range span (and AL < AH) Minimum value of the
instrument input range
Input adjustment
point HIGH (BH) ±10% of the instrument input range span (and BL < BH) Maximum value of the
instrument input range
Input adjustment
HIGH (AH) ±10% of the instrument input range span (and AL < AH) Maximum value of the
instrument input range
10.2 Instrument for Adjustments
• 6-dial decade resistance box (YOKOGAWA 279301 or equivalent): 1
10.3 Input Adjustment
10.3.1 Connecting the Adjustment Instrument
Connect the input and supply voltage as shown in the gure below.
10 11 1 2
39
8 7 6 5
4
7
8
N–
L+ (SUPPLY)
4
6
5
B
B
A
Input signalPower supply
6-dial decade
resistance box
10.3.2 Adjusting Inputs
Carry out input adjustments between two points, or the minimum value (BL: input adjustment
point LOW) and maximum value (BH: input adjustment point HIGH) that have been set within the
adjustment range (see Section 10.1).
This subsection describes an example of making an input adjustment between two points within the
range of -50.0 to 150.0°C with the MVRK range code No. set to “62” (instrument input range: -199.9
to 200.0°C).
Press to display
"LOC."
Press to display
"-1."
The MVRK enters the operable status as soon as the power is turned on, but requires 10 to 15 minutes
of warm-up to meet the performance requirements.
When you press the SET/ENT key for more than 3 sec.
with the Operation Parameter Screen displayed, the Setup
Parameter Screen 1 appears.
When the power is turned on, the PV screen of the
Operation Parameter Screen appears.
Press the SET/ENT key to display parameter "BL."
In this case, the DATA display shows "-199.9," the
minimum value of instrument input range of the set range
code No.
Press the UP key to display "-50.0" on the DATA display.
Press the SET/ENT key to accept this data.
Press the SET/ENT key to display the next parameter.
This causes parameter "AL" and the measured value to
appear alternately.
Press the UP or DOWN key.
The decimal point blinks.
Press the SET/ENT key.
The value before adjustment (-52.2) appears on the DATA
display.
Press the SET/ENT key to display the next parameter "BH."
Press this key for
more than 3 sec.
The decimal point blinks.
The decimal point blinks during
data change.
The decimal point blinks during
data change.
Press the SET/ENT key to display parameter "LOC."
Press the DOWN key to display "-1" on the DATA display.
Press the SET/ENT key to display the Setup Parameter
Screen 2.
Setup Parameter Screen 1
Setup Parameter Screen 2
Operation Parameter Screen
Power ON
Using the 6-dial variable resistor, apply resistance equivalent
to the input -50°C to the MVRK.
In this case, the DATA display shows "200.0," the
maximum value of instrument input range of the set range
code No.
Press the DOWN key to display "150.0" on the DATA
display.
Press the SET/ENT key to accept this data.
Press the SET/ENT key to display the next parameter.
The decimal point blinks during
data change.
Press .
Press to
display "BL."
Press to display
"-50.0."
Press .
Press .
The measured value and
parameter AL are
displayed alternately.
Press or .
Press .
Press .
"-52.2" appears on the
DATA display.
Press to display
"150.0."
Press .
Press .
Continue to the next page

IM 77J04R31-01E 2nd Edition Oct. 15, 2019-00
6
The previously adjusted value
will be reset.
The decimal point blinks during
data change.
This causes parameter "AH" and the measured value to
appear alternately.
Press the UP or DOWN key.
The decimal point blinks.
Press the SET/ENT key.
The value before adjustment (153.9) appears on the DATA
display.
This completes the input adjustment for the MVRK.
Press the SET/ENT key to display parameter "RST."
Press the UP key to display "ON" on the DATA display.
Press the SET/ENT key.
This resets the previously adjusted value.
Setup Parameter Screen 2
Using the 6-dial variable resistor, apply resistance equivalent
to the input 150°C to the MVRK.
If additional re-adjustment must be made, take the following steps and then perform the
procedure above.
Press to display
"RST."
Press to display
"ON."
Press .
This completes the input
adjustment.
The decimal point blinks.
The measured value and
parameter AH are displayed
alternately.
Press or .
Press .
11. SETTING ACTIVE COLOR PV DISPLAY (PV DISPLAY COLOR
CHANGING FUNCTION)
11.1 Setting Ranges and Factory-Set Values
Setup Parameter Screen 1
Parameter
Symbol Parameter Name Setting Range Factory-Set
Value
High limit for PV display
color change (PCH)
When PV display color mode (PCM) is 6 or 7: PCL+1digit
to 9999
When PV display color mode (PCM) is 8 or 9:
-100.0 to 100.0% of the measured input range
* The setting range depends on the setting of the decimal
point position (SDP).
−
Low limit for PV display
color change (PCL)
When PV display color mode (PCM) is 6 or 7:
-1999 to PCH-1digit
When PV display color mode (PCM) is 8 or 9:
-100.0 to 100.0% of the measured input range
* The setting range depends on the setting of the decimal
point position (SDP).
−
Setup Parameter Screen 2
Parameter
Symbol Parameter Name Setting Range Factory-Set
Value
PV display color mode
(PCM)
0: Fixed in green
1: Fixed in red
2: Link to alarm 1
(under normal condition: green; at alarm status: red)
3: Link to alarm 1
(under normal condition: red; at alarm status: green)
4: Link to alarm 1 and alarm 2
(under normal condition: green; at alarm status: red)
5: Link to alarm 1 and alarm 2
(under normal condition: red; at alarm status: green)
6: PV limit*
(when more than PCL, less than PCH: green; when
PCL or less, PCH or more: red)
7: PV limit*
(when more than PCL, less than PCH:red; when PCL
or less, PCH or more: green)
8: SP deviation*
(when more than SP-PCL, less than SP+PCH: green;
when SP-PCL or less, SP+PCH or more: red)
9: SP deviation*
(when more than SP-PCL, less than SP+PCH: red;
when SP-PCL or less, SP+PCH or more: green)
10: Link to alarm 1 to alarm 4
(under normal condition: green; at alarm status: red)
11: Link to alarm 1 to alarm 4
(under normal condition: red; at alarm status: green)
1
*: PV display color is changed linking to the setting range of high limit (PCH) and low limit (PCL) for PV display
color change.
11.2 Setting Active Color PV Display
This section describes an example of setting the PV display color mode (PCM) to “6,” high limit for
PV display color change (PCH) to “70.0” and low limit (PCL) to “20.0.”
The procedure below begins with the condition in which the Setup Parameter Screen 2 is displayed.
When you press the SET/ENT key for more than 3 sec.
with the Operation Parameter Screen displayed, the Setup
Parameter Screen 1 appears.
Press this key for
more than 3 sec.
Operation Parameter Screen
Press the SET/ENT key to display parameter "PCM."
Press the UP or DOWN key to display "6" on the DATA
display.
The decimal point blinks during
data change.
This completes the process for
setting the PV display color mode.
Press to display
"PCM."
Press or
to display "6 . "
"
Press .
Press for more
than 3 sec.
Press the SET/ENT key to accept PV display color
mode "6."
Press the SET/ENT key for more than 3 sec.
This causes the Operation Parameter Screen to appear.
Setting the PV display color mode
Setup Parameter Screen 2
Continue to the upper right
Press the SET/ENT key to display parameter "PCH."
Press the UP or DOWN key to display "70.0" on the DATA
display.
The decimal point blinks during
data change.
This completes the process for
setting the high limit for PV display
color change.
Press to display
"PCH."
Press or
to display "70.0 . "
Press .
Press to display
"PCL."
Press the SET/ENT key to accept the high limit for PV
display color change "70.0."
Press the SET/ENT key to display parameter "PCL."
Press the UP or DOWN key to display "20.0" on the DATA
display.
The decimal point blinks during
data change.
This completes the process for
setting the low limit for PV display
color change.
Press or
to display "20.0 . "
Press .
Press for more
than 3 sec.
Press the SET/ENT key to accept the low limit for PV
display color change "20.0."
Press the SET/ENT key for more than 3 sec.
This causes the Operation Parameter Screen to appear.
Setting the high and low limits for PV display color change
Setup Parameter Screen 1
To the Operation Parameter Screen
12. OTHER PARAMETERS
12.1 Setting Ranges and Factory-Set Values
Setup Parameter Screen 1
Parameter
Symbol Parameter Name Setting Range Factory-Set
Value
Key lock
(LOC)
0: Without lock. All parameters can be set.
1: Parameters other than the operation parameters
cannot be changed.
2: All parameters cannot be changed.
-1: This moves to the Setup Parameter Screen 2.
0
Setup Parameter Screen 2
Parameter
Symbol Parameter Name Setting Range Factory-Set
Value
Measured input bias (BS) -1999 to 9999 0
Economical mode time
(ECO)
0 (Continuous: no display OFF function), 1 to 60
(minutes) 10
12.2 Setting Key Lock
This section describes an example of locking keys so that parameter settings other than the
operation parameters cannot be changed. The procedure below begins with the condition in which
the Setup Parameter Screen 1 is displayed.
Press the SET/ENT key to display parameter "LOC."
Press the UP key to display "1" on the DATA display.
Press the SET/ENT key to accept this data.
The decimal point blinks during
data change.
Setup Parameter Screen 1
Press to display
"LOC."
Press to display
"1."
Press
12.3 Setting Economical Mode Time
Setting economical mode time allows indications on the PV display to be extinguished if no keystroke
is made within the set time.
The MVRK’s power consumption in the OFF mode is approximately 0.5 W or 1 VA during normal
operations (non-alarm status). This section describes an example of setting the economical mode
time to “5 minutes” (factory-set value: 10 minutes).
The procedure below begins with the condition in which the Setup Parameter Screen 2 is displayed.
Press the SET/ENT key to display parameter "ECO."
Press the DOWN key to display "5" on the DATA display.
Press the SET/ENT key to accept this data.
The decimal point blinks during
data change.
Setup Parameter Screen 2
Press to display
"ECO."
Press to display
"5."
Press .
CAUTION
The economical mode is temporarily released at the time of PV display color change
and the PV display lights up. After the set economical mode time elapsed from the time
of returning to normal operation, the economical mode operation begins again .
12.4 Setting Input Bias
This section describes an example of correcting an error by setting input bias if there is an error of “-1
(°C)” in the MVRK displayed value with respect to the measured value. The procedure below begins
with the condition in which the Setup Parameter Screen 2 is displayed.
Press the SET/ENT key to display parameter "BS."
Press the UP key to display "1.0" on the DATA display.
Press the SET/ENT key to accept this data.
The decimal point blinks during
data change.
Setup Parameter Screen 2
Press to display
"BS."
Press to display
"1.0."
Press .

IM 77J04R31-01E 2nd Edition Oct. 15, 2019-00
7
13. MONITOR OUTPUT
13.1 Monitor Output (Analog)
Monitor output (analog) is added only when monitor output code “6” or “A” is specied at the time of
order.
13.1.1 Setting Monitor Output
In setting monitor output, the maximum monitor output value (RTH) and minimum monitor output
value (RTL) can be freely set within the instrument input range of the set range code No. (IN) that
have been set for the MVRK.
For example, to set the monitor output corresponding to the measured input range “-50.0 to 150.0°C”
to “1 to 5 V DC” when the MVRK range code No. (IN) is “62” (instrument input range: -199.9 to
200.0°C), set the maximum monitor output value (RTH) to “150.0” and the minimum monitor output
value (RTL) to “-50.0.” This causes monitor output to be “1 V” when input to the MVRK is 50.0°C as
shown below.
-199.9°C
1V
200.0°C
5V
-50.0
(RTL)
150.0
(RTH)
Range code No. 62
Monitor output setting
Maximum monitor output value: 150.0° C
Minimum monitor output value: -50.0° C
Input range available for the range
code No. 62 of the MVRK
Monitor output range
Fixed to 4 to 20 mA or 1 to 5 V DC
(5 V is output when the measured value is
150.0° C,
while 1 V is output when it is -50.0° C.)
13.1.2 Setting Ranges and Factory-Set Values of Monitor Output (Analog)-Related
Parameters
Setup Parameter Screen 2
Parameter
Symbol Parameter Name Setting Range Factory-Set
Value
Maximum monitor output
value (RTH)
RTL + 1 digit to 9999
Within the instrument input range
Maximum value
of the instrument
input range
Minimum monitor output
value (RTL)
-1999 to RTH - 1 digit
Within the instrument input range
Minimum value
of the instrument
input range
Visibility of monitor output
adjustment screen (MON)
OFF (invisible) or ON (visible)
Set this parameter to “ON” for adjustments of monitor
output.
OFF
(invisible)
Forced output of a monitor
output value (MAN)
-25.0 to +125.0 (%)
Note that the assured range is -6.0 to +106 (%). 0.0
Monitor output zero
adjustment (ZER) -19.99 to 20.00 (%) 0.00
Monitor output span
adjustment (SPN) -19.99 to 20.00 (%) 0.00
13.1.3 Setting Monitor Output
CAUTION
Accuracy (±0.1% of output span) is limited depending on the settings for maximum and
minimum monitor output values. For more information on accuracy limitations, refer to
the general specications (GS 77J04R31-01E).
This subsection describes an example of setting the maximum monitor output value (RTH) to “150.0”
and minimum monitor output value (RTL) to “-50.0” when the MVRK range code No. is set to “62.”
When you press the SET/ENT key for more than 3 sec.
with the Operation Parameter Screen displayed, the Setup
Parameter Screen 1 appears.
When the power is turned on, the PV screen of the
Operation Parameter Screen appears.
Press the SET/ENT key to display parameter "RTH."
In this case, the DATA display shows "200.0," the
maximum value of instrument input range of the range
code No. "62."
Press the DOWN key to display "150.0" on the DATA
display.
Press the SET/ENT key to accept this data.
This completes the procedure for setting the maximum
monitor output value.
Press the SET/ENT key to display the next parameter.
Press this key for
more than 3 sec.
The decimal point blinks during
data change.
The decimal point blinks during
data change.
Press the SET/ENT key to display parameter "LOC."
Press the DOWN key to display "-1" on the DATA display.
Press the SET/ENT key to display the Setup Parameter
Screen 2.
Press the SET/ENT key to display parameter "RTL."
In this case, the DATA display shows "-199.9," the
minimum value of instrument input range of the range code
No. "62."
Press the UP key to display "-50.0" on the DATA display.
Press the SET/ENT key to accept this data.
This completes the procedure for setting the minimum
monitor output value.
The decimal point blinks during
data change.
Setup Parameter Screen 1
Setup Parameter Screen 2
Operation Parameter Screen
Power ON
This completes the procedure
for setting the maximum
monitor output value.
This completes the procedure
for setting the minimum monitor
output value.
Press to display
"LOC."
Press to display
"-1."
Press .
Press to display
"RTL."
Press to display
"-50.0."
Press .
Press to display
"RTH."
Press to display
"150.0."
Press .
Press .
13.1.4 Adjusting Monitor Output
(1) Instruments for adjustment
• Digital multimeter (DMM) (YOKOGAWA DM7560 or the equivalent): 1
• Precision resistor of 250 Ω ± 0.01%, 0.25 W or more: 1
(2) Output adjustments
Connect each instrument as shown below.
10 11 1 2
39
8 7 6 5
4
7
8
N–
L+ (SUPPLY)
Power supply
R: 250 Ω
precision resistor for current
output
RDMM
Main unit
Socket
–
+
1
1
3
3
Monitor output
(3) Adjusting monitor output
The following describes an example of adjusting an error when the minimum monitor output value
(measured value) is 1.008 V (an error of 0.008 V) with the MVRK monitor output set to “1 to 5 V
DC.” The basic adjusting procedure for the maximum monitor output value is the same as that of
the minimum monitor output value; perform it by referring to the procedure below.
The procedure below begins with the condition in which the Setup Parameter Screen 2 is
displayed.
Press the SET/ENT key to display parameter "MON."
Press the UP key to display "ON" on the DATA display.
Press the SET/ENT key to accept the data.
Press the SET/ENT key twice to display parameter "ZER."
Display parameter "MON" and press the DOWN key to
display "OFF" on the DATA display.
Press the SET/ENT key to accept the data.
Press the UP key to display "-0.20" on the DATA display.
Then press the UP or DOWN key to make fine
adjustments.
Make adjustments to the maximum monitor output value
by displaying parameter "SPN."
The minimum output value
(1 V) is output forcibly.
The maximum output
value (5 V) is output
forcibly.
(Displays a correction value
corresponding to the error.)
Press to display
"-0.20."
Press or
to make fine adjustments.
Setup Parameter Screen 2
This establishes the setting in which
the monitor output adjustment
screen becomes visible.
This establishes the setting in which
the monitor output adjustment
screen becomes invisible.
This completes the process for
adjusting the minimum monitor
output value.
The MVRK enters the operable status as soon as the power is turned on, but requires 10 to 15 minutes
of warm-up to meet the performance requirements.
(Measured value [1.008 V]) - (Reference value [1 V])
Output span [4 V] ×100 (%)Error =
Follow the same procedure as above to adjust the maximum monitor
output value.
After adjusting the monitor output, set the MON parameter to "OFF" (making the adjustment
screen invisible).
When this parameter (ZER) is displayed, the MVRK forcibly outputs
the minimum monitor output value (0%), regardless of input.
The monitor output is corrected by -0.2% because the error is
+0.008 V (+0.2%).
Press to display
"MON."
Press to display
"ON."
Press .
Press to display
"ZER."
Press to display
"OFF."
Press .
13.1.5 Using the Forced Output Function
The use of the forced output function allows you to conduct operation tests for a device
connected to the monitor output terminals of the MVRK.
This subsection describes an example of forcing a value equivalent to 50% of the output
range (3 V) to output when the monitor output of the MVRK is “1 to 5 V DC.”
The procedure below begins with the condition in which parameter “MAN” is displayed
with the MON parameter set to “ON” in the Setup Parameter Screen 2.
Press the UP key to display "50.0" on the DATA display.
The minimum output value
(1 V) is output forcibly.
The value equivalent to
50% of the output range
(3 V) is output forcibly.
Setup Parameter Screen 2
When this parameter (MAN) is displayed, the MVRK forces
the monitor output value to be output, regardless of input.
3 V is output forcibly. The MVRK continues to output
while this parameter is displayed on the screen.
After completion of the forced output, return the MON parameter setting to "OFF" (making the
adjustment screen invisible).
Pressing causes
the output value to increase.
CAUTION
After performing monitor output adjustments or forced output, always set the MON
parameter to “OFF” (making the adjustment screen invisible). If the Setup Parameter
Screen 2 is switched while the MON parameter is set to “ON,” displaying parameter
“MAN,” “ZER” or “SPN” causes a value corresponding to the set value to be output
forcibly. Furthermore, if the power is turned o󰀨 while parameter “MAN” is displayed, the
set values will be initialized.

IM 77J04R31-01E 2nd Edition Oct. 15, 2019-00
8
13.2 Monitor Output (Communication)
Monitor output (communication) is added only when the monitor output code “P” is specied at the
time of order.
13.2.1 Setting Ranges and Factory-Set Values of Monitor Output (Communication)-Related
Parameters
Setup Parameter Screen 2
Parameter
Symbol Parameter Name Setting Range Factory-Set
Value
Communication protocol
(PSL)
0: PC link
1: PC link with SUM
2: Ladder communication
3: MODBUS ASCII
4: MODBUS RTU 0
(PC link)
Communication address
(ADR) 1 to 99 1
Baud rate (BPS)
1.2 (0: 1200 bps)
2.4 (1: 2400 bps)
4.8 (2: 4800 bps)
9.6 (3: 9600 bps)
19.2 (4: 19200 bps)
38.4 (5: 38400 bps)
9.6
(9600 bps)
Parity (PRI) NON (0: None)
EVN (1: Even)
ODD (2: Odd) EVN
(Even)
Stop bit (STP) 1 or 2 (bits) 1
Data length (DLN) 7 or 8 (bits) 8
13.2.2 Setting the Communication-Related Parameters
When you press the SET/ENT key for more than 3 sec.
with the Operation Parameter Screen displayed, the
Setup Parameter Screen 1 appears.
When the power is turned on, the PV screen of the
Operation Parameter Screen appears.
Press the SET/ENT key to display parameter "PSL" for
setting the communication protocol.
Press the UP or DOWN key to display the communication
protocol number on the DATA display.
Press this key for
more than 3 sec.
The decimal point blinks during
data change.
Press the SET/ENT key to display parameter "LOC."
Setup Parameter Screen 2
Operation Parameter Screen
Setup Parameter Screen 1
Power ON
This completes the process for
setting the communication protocol.
Parameter "PRI" for setting the parity
Parameter "STP" for setting the stop bit
Parameter "DLN" for setting the data length
Parameter "BPS" for setting the baud rate
Parameter "ADR" for setting the communication address
Follow the same procedure to set the following parameters:
Press to display
"LOC."
Press to display
"-1."
Press .
Press to display
"PSL."
Press or
to display the communication
protocol number to use.
Press .
Press .
Press the DOWN key to display "-1" on the DATA display.
Press the SET/ENT key to display the Setup Parameter
Screen 2.
Press the SET/ENT key to accept this data.
Press the SET/ENT key to display the next parameter.
See Also
For more information on the communication functions, refer to the M Series Digital Limit
Alarms Communication Functions User’s Manual (IM 77J04J11-01E) sold separately.
14. TROUBLESHOOTING
Possible Errors Occurring at Power ON
The following describes possible errors occurring at power ON.
Error Indication
Description
of Error
Status
Remedy
PV
Display
Alarm
Indicator
Lamps
READY
Lamp PV Alarm
Output
Monitor Output
RS-485 Analog
Undened Undened Undened CPU
failure Undened Undened Undened Undened
Failure.
Submit request
for us to repair.
OFF OFF OFF Power
failure
None
(0%) OFF Invalid 0% or less
OFF Normal EEP sum
error
None
(0%) OFF Invalid 0% or less
blinks
OFF
Blinking
RAM
error None
(0%) OFF Invalid 0% or less
AL2
blinking
ROM
error
Possible Errors Occurring during Operations
The following describes errors that may occur during operations.
Error Indication
Description of
Error
Status
Remedy
PV
Display
Alarm
Indicator
Lamps
READY
Lamp PV Alarm
Output
Monitor Output
RS-485 Analog
blinks
AL1 lights Normal EEPROM error None
(0%) OFF Invalid 0% or less
Failure.
Submit request
for us to repair.
AL2 lights AD error
Normal Normal Input exceeding
high limit
110% of the
measured
range
Normal Normal
106% or
more of the
output range
Check input.
Normal Normal Input falling
below low limit
-10% of the
measured
range
Normal Normal
-6% or less
of the output
range
Check input.
Normal Normal Burnout
110% or
-10% of the
measured
range
Normal Normal
106% or
more or -6%
or less of
the output
range
Check input.
Decimal
point
blinks
Normal Normal Communication
error Normal Normal Normal Normal
Press any key,
or if normal
communication
is made, a
communication
error will be
cleared.