YOKOGAWA MVRK User Manual

User ’s

(5 or more)

provide spacing of 5 mm between the products.

Slide lock

DIN rail

(Rear of the socket)

Model MVRK
Limit Alarm for RTD Input

Manual

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.

(with Active Color PV Display)

IM 77J04R31-01E

2nd Edition Oct. 2019 (YK)

2-9-32, Naka-cho Musashino-shi, Tokyo 180-8750 Japan
Phone: [phone] Facsimile: [phone]

You can download the latest manuals from the following website:

http://www.yokogawa.com/ns/juxta/im/

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).

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.

Stopper

• Mounting Dimensions

Pitch: 56 or more

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

Socket

2-ø4.5 or 2-M4

40±0.2

(51)

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.

Fit into here

DIN rail

Push

Spacer

(16)

Unit: mm

40±0.2

MODEL AND SUFFIX CODES

Model Su󰀩x codes Description
MVRK -0 0 [] -[] [] [] [] /[][] Limit Alarm for RTD Input
Type -0 General use type

Power Supply

Input Signal

Output Signal

Monitor Output

Burnout Function

Optional Specication

0 Always 0

3 24 V DC±10%
6 100-240 V AC/DC (Operating range: 85 to 264 V)

-U RTD input

-Z Custom order

1 Alarm output (transfer contact [1a1b] ), 2 points
2 Alarm output (NO contact), 4 points

6 1 to 5 V DC
A 4 to 20 mA DC
P Communication function (RS-485)
N No monitor output

U UP
D DOWN
N OFF

/SN No socket (with socket if not specied)
/C0 Coating
/FB Fuse bypass

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/s2 or
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.

1

4. EXTERNAL WIRING

Alarm-1

Display position

Range code No.

You can begin with any of these parameters.

settings beginning

Step 2Step 1

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 mm
the power cable has a nominal cross-sectional area of 1.25 mm2 or thicker.
Make the wiring resistance of the input terminals 4 and 6 the same.

Power supply

L+

7

(SUPPLY)

N–

8

8 7 6 5

4

39

Input signal

RTD

A

4

B

(IN)

5

B

6

10 11 1 2

2

or thicker, while

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.

Place for adhering
the tag number label

(1) PV (measured value)

display

(4) READY

lamp

(5) SET/ENT

key

Part Name Function

PV (measured value)

(1)

display

(2) DATA display

(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

(6) UP/DOWN key

Monitor output terminal

(7)

(Two-piece connector)

(7) Monitor output terminal (option)

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.
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)

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.
Used to change the setpoint of a parameter.

Pressing the
Pressing the key decreases a numerical value.

Holding down a key accelerates the speed of change.

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.)

(2) DATA display

(3) Alarm indicator lamp

2 points of alarms: 2 lamps
4 points of alarms: 4 lamps

(6) UP/DOWN key

Alarm action Alarm action type

No alarm (normal) None

of alarm action
type

Alarm-4 *
Alarm-3 *
Alarm-2

*Alarm-3 and Alarm-4 are 4 points alarm only.

key increases a numerical value.

PV high limit

alarm

PV low limit

alarm

Other alarms

2 points of alarm outputs 4 points of alarm outputs

NO

NC

NO

NC

10

11

[]1[][]

Alarm-1

output

(ALM1)

9

2

Alarm-2

output

3

(ALM2)

1

MVRK-00[]-

Relay

Relay

Relay

Relay

MVRK-00[]-

Relay

COM

Relay

COM

NO

COM

NO

NO

COM

NO

10

9

11

2

1

3

[]2[][]

Alarm-1output
(ALM1)

Alarm-4 output
(ALM4)

Alarm-2 output
(ALM2)

Alarm-3 output
(ALM3)

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.

Monitor output

Analog output

1

+

–

3

1

2 3

RS-485

communication

B+

1

A–

2

3

COM

6. PARAMETER

When setting a parameter, begin with Step 1 below and continue in sequence.

(IN)

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.

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)

The alarm setpoint (A1 to A4) corresponding to each alarm action (AL1 to AL4)
(Example: If AL1 is changed, A1 will be initialized.)

High and low limits for PV display color change (PCH, PCL)

Alarm-1 action Alarm-2 action Alarm-3 action Alarm-4 action
(AL1) (AL2) (AL3) (AL4)

After that, you
may proceed with

at any parameter.

Parameters to be initialized if the range code No. (IN) is changed

Parameters to be initialized if the type of alarm action (AL1 to AL4) is changed

Parameters to be initialized if the type of PV display color mode (PCM) is changed

2

IM 77J04R31-01E 2nd Edition Oct. 15, 2019-00

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.

Power

ON

A

B

D

The symbol indicates a reference chapter/section in this manual.

Operation Parameter Screen

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.

Press this key for more than 3 sec.

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.

Maximum monitor output value (RTH)

This parameter is set to treat any value as
the maximum output value with respect to
the input range.

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.

Chapter 9

Chapter 9

Chapter 9

Chapter 9

Chapter 11

Chapter 11

Section 13.1

Section 13.1

Section 13.2

Section 13.2

Section 13.2

Section 13.2

Section 13.2

To the Setup Parameter Screen 1

To the Operation Parameter Screen

Press this key
for more than 3 sec.

A

C

Setup Parameter Screen 1 Setup Parameter Screen 2

Alarm-1 action (AL1)

Sets the direction of alarm-1 action.

(See the Alarm Action Type Codes table in Section 9.1.)

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.

is displayed when the PV display color mode (PCM) has

A

been set to 6, 7, 8 or 9.

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.

AA

Press the DOWN key to display "-1"
on the DATA display and then press
the SET/ENT key.

To the Operation Parameter Screen

Chapter 9

Chapter 9

Chapter 9

Chapter 9

Chapter 9

Chapter 9

Chapter 9

Chapter 9

Chapter 9

Chapter 9

Chapter 9

Chapter 12

Section 13.1

Section 13.1

)

Section 13.1

)

is displayed when the monitor output (analog) has been

B

To the Setup Parameter Screen 2

C

C

is displayed
when the monitor
output (analog) has
been specified.

Press this key
for more than 3 sec.

B

specified.

or

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.

Burnout action (BSL)

Sets the burnout action.

Wiring resistance correction (WIR)

Used when correcting wiring resistance.

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.

D

D

is displayed when the

monitor output (RS-485

communication) has been

specified.

Chapter 8

Chapter 12

Chapter 11

Chapter 12

Chapter 8

Chapter 8

Chapter 10

Chapter 10

Chapter 10

Chapter 10

Chapter 10

Data length (DLN)

Sets the data length.

Section 13.2

Monitor output span adjustment (SPN

Section 13.1

Adjusts the span of the monitor output.

3

)

IM 77J04R31-01E 2nd Edition Oct. 15, 2019-00

8. SETTING INPUT-RELATED PARAMETERS

Short-circuit at the cable end.

Setup Parameter Screen 2

Hysteresis

Alarm setpoint

PV

PV

Hysteresis

Alarm setpoint

PV

Hysteresis

Setpoint

Deviation setpoint

PV

Hysteresis

Setpoint

Deviation setpoint

PV

Hysteresis

Hysteresis

Setpoint

Deviation setpointDeviation setpoint

PV

HysteresisHysteresis

Setpoint

Deviation setpointDeviation setpoint

8.1 Setting Ranges and Factory-Set Values of Input-Related Parameters

Setup Parameter Screen 2

Parameter

Symbol

Parameter Name Setting Range

Range code No.

(IN)

Burnout action

(BSL)

Wiring resistance
correction

(WIR)

Range code No. Input type Instrument input range

Pt100

(ITS-90)

Pt100

(IPTS-68)

JPt100

(JIS’89)

Pt50(JIS’81) -199.9 to 649.0 °C

Pt100

(ITS-90)

Pt100

(IPTS-68)

JPt100

(JIS’89)

Pt50(JIS’81) 80.0 to 920.0 K

OFF (0), UP (1), DOWN (2) According to

OFF (0), ON (1) OFF

-199.9 to 660.0 °C

-199.9 to 200.0 °C

-199.9 to 660.0 °C

-199.9 to 200.0 °C

-199.9 to 510.0 °C

-199.9 to 190.0 °C

80.0 to 930.0 K

80.0 to 470.0 K

80.0 to 930.0 K

80.0 to 470.0 K

80.0 to 780.0 K

80.0 to 460.0 K

Factory-Set

Value

61

or

the range code

No. specied

at the time of

oreder

the su󰀩x codes

specied at the

time of order

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).

Power ON

Operation Parameter ScreenOperation Parameter Screen

Press this key for
more than 3 sec.

Setup Parameter Screen 1

Press

to display "LOC."

Press to display "-1."

The decimal point blinks during
data change.

Press .

Setup Parameter Screen 2

Press or

to display "62."

The decimal point blinks during
data change.

Press .

This completes the process for
setting the range code No.

Press fore more than
3 sec.

To the Operation Parameter Screen

When the power is turned on, the PV screen of the Operation
Parameter Screen appears.

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 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.

Step 1

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.

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.

Setup Parameter Screen 2

Press

Press or

to display "ON."

The decimal point blinks during
data change.

Press .

This completes the process for
correcting the wiring resistance.

to display "WIR."

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.

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

Setup Parameter Screen 1

Parameter

Symbol

<Alarm Action Type Codes>

Alarm

Type

PV high-

limit alarm

Parameter Name Setting Range Factory-Set Value

Alarm-1 setpoint

(A1)

Alarm-2 setpoint

(A2)

Alarm-3 setpoint

(A3)

Alarm-4 setpoint

(A4)

Parameter Name Setting Range Factory-Set Value

Alarm-1 action

(AL1)

Alarm-2 action

(AL2)

Alarm-3 action

(AL3)

Alarm-4 action

(AL4)

Alarm-1 hysteresis

(HY1)

Alarm-2 hysteresis

(HY2)

Alarm-3 hysteresis

(HY3)

Alarm-4 Hysteresis
(HY4)

Alarm ON delay

(OND)

Alarm OFF delay

(OFD)

Setpoint

(SP)

Within the instrument input range.

2 points of alarms: 80.0
4 points of alarms: 30.0

See the Alarm Action Type Codes table.

The value resulting from adding a hysteresis value to an

alarm setpoint should be within the instrument input range.

Setting range: 0 to 999 sec.

Setting resolution: 1 sec.

Setting range: 0 to 999 sec.

Setting resolution: 1 sec.

Within the instrument input range. Minimum value of

Alarm Action Type Code

Without Stand-by

Action

Deenergized

under

Normal

Condition

Energized

under

Normal

Condition

Normal

Alarm Action

Alarm

the instrument input

Deenergized

Condition

20.0

70.0

80.0

2

2 points of alarms: 1
4 points of alarms: 2

1

1

3.0

3.0

3.0

3.0

0

0

range

With Stand-by

Action

Energized

under

Normal

under

Normal

Condition

Press

Press or

to display "UP."

The decimal point blinks during
data change.

Press .

This completes the process for
setting the burnout action.

to display "BSL."

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.

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.

A

4

B

MVRK

5

B

6

The procedure below begins with the condition in which the Setup Parameter Screen 2 is displayed.

PV low-limit

alarm

Deviation
high-limit

alarm

Deviation

low-limit

alarm

Deviation

high and

low-limit

alarm

Deviation

within high

and low-

limit alarm

Alarm

Normal

Alarm

Alarm

Normal

AlarmNormal

Normal

Alarm

Normal

Alarm

Normal

No alarm

4

(Parameters A1 to A4 are not displayed.)

IM 77J04R31-01E 2nd Edition Oct. 15, 2019-00

Stand-by Action

Setting the alarm action Setting the alarm setpoint Setting the hysteresis Setting the alarm ON delay Setting the alarm OFF delay

Regarded

as normal

PV

Normal

Abnormal

(Alarm ON)

Low-limit
alarm
setpoint

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.

Power ON

Time

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.)

Power ON

Operation Parameter Screen

Press this key for
more than 3 sec.

Setup Parameter Screen 1

Press or

to display "12."

The decimal point blinks during
data change.

Press .

This completes the process for
setting the alarm-1 action.

Press for more

To the Setup Parameter
Screen 1

than 3 sec.

Operation Parameter Screen

Press

Press or

to display "0.0."

The decimal point blinks during
data change.

Press .

This completes the process for
setting the alarm-1 setpoint.

Setup Parameter Screen 1

Press or

to display "5.0."

The decimal point blinks during
data change.

Press .

This completes the process for
setting the alarm-1 hysteresis.

Press to display

"OND."

Press or

to display "5."

The decimal point blinks during
data change.

Press .

This completes the process for
setting the alarm ON delay.

Press .

Press or

to display "5."

The decimal point blinks during
data change.

Press .

This completes the process for
setting the alarm OFF delay.

Press for more
than 3 sec.

To the Operation Parameter Screen

to display "A1."

When the power is turned on, the PV screen of the
Operation Parameter Screen appears.

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.

Step 2

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.)

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).

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 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."

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.

10. INPUT ADJUSTMENTS

10.1 Setting Ranges and Factory-Set Values of Adjustment-Related Parameters

Setup Parameter Screen 2

Parameter

Symbol

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.

10.3.2 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).

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.

Setup Parameter Screen 1

Parameter Name Setting Range Factory-Set Value

Input adjustment

reset (RST)

Input adjustment

point LOW (BL)

Input adjustment

LOW (AL)

Input adjustment

point HIGH (BH)

Input adjustment

HIGH (AH)

L+

7

(SUPPLY)

N–

8

OFF (0) or ON (1)
(This parameter is used (set to ON) to reset adjusted
values.)

±10% of the instrument input range span (and BL < BH)

±10% of the instrument input range span (and AL < AH)

±10% of the instrument input range span (and BL < BH)

±10% of the instrument input range span (and AL < AH)

8 7 6 5

4

Input signal Power supply

6-dial decade

resistance box

39

10 11 1 2

Power ON

Operation Parameter Screen

Press this key for
more than 3 sec.

Press to display
"LOC."
Press to display

The decimal point blinks during
data change.

Press .

Setup Parameter Screen 2

Press to
display "BL."

Press to display
"-50.0."

The decimal point blinks during
data change.

Press .

Press .

The measured value and
parameter AL are
displayed alternately.

Press or .

The decimal point blinks.

Press .

"-52.2" appears on the
DATA display.

Press .

"-1."

When the power is turned on, the PV screen of the
Operation Parameter Screen appears.

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 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 "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.

Using the 6-dial variable resistor, apply resistance equivalent
to the input -50°C to the MVRK.

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."

In this case, the DATA display shows "200.0," the
maximum value of instrument input range of the set range
code No.

OFF

Minimum value of the

instrument input range

Minimum value of the

instrument input range

Maximum value of the

instrument input range

Maximum value of the

instrument input range

A

4

B

5

B

6

Press to display
"150.0."

The decimal point blinks during
data change.

Press .

Press .

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.

Continue to the next page

5

IM 77J04R31-01E 2nd Edition Oct. 15, 2019-00

Using the 6-dial variable resistor, apply resistance equivalent

The measured value and

Setting the PV display color mode

Setting the high and low limits for PV display color change

Setup Parameter Screen 1

Setup Parameter Screen 1

Setup Parameter Screen 2

Setup Parameter Screen 2

parameter AH are displayed
alternately.

Press or .

The decimal point blinks.

Press .

This completes the input
adjustment.

to the input 150°C to the MVRK.

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 to display
"PCH."

Press or

to display

The decimal point blinks during
data change.

"70.0."

Press .

This completes the process for
setting the high limit for PV display
color change.

Press to display
"PCL."

Press the SET/ENT key to display parameter "PCH."

Press the UP or DOWN key to display "70.0" on the DATA
display.

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."

If additional re-adjustment must be made, take the following steps and then perform the
procedure above.

Setup Parameter Screen 2

Press to display

Press the SET/ENT key to display parameter "RST."

"RST."

Press to display

Press the UP key to display "ON" on the DATA display.

"ON."

The decimal point blinks during
data change.

Press .

The previously adjusted value
will be reset.

Press the SET/ENT key.
This resets the previously adjusted value.

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

High limit for PV display
color change (PCH)

Low limit for PV display
color change (PCL)

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).

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).

Factory-Set

Value

−

−

Press or

to display

The decimal point blinks during
data change.

"20.0."

Press .

This completes the process for
setting the low limit for PV display
color change.

Press for more
than 3 sec.

To the Operation Parameter Screen

Press the UP or DOWN key to display "20.0" on the DATA
display.

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.

12. OTHER PARAMETERS

12.1 Setting Ranges and Factory-Set Values

Setup Parameter Screen 1

Parameter

Symbol

Setup Parameter Screen 2

Parameter

Symbol

Parameter Name Setting Range

Key lock

(LOC)

Parameter Name Setting Range

Measured input bias (BS) -1999 to 9999

Economical mode time

(ECO)

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 (Continuous: no display OFF function), 1 to 60
(minutes)

Factory-Set

Value

0

Factory-Set

Value

0

10

Setup Parameter Screen 2

Parameter

Symbol

*: PV display color is changed linking to the setting range of high limit (PCH) and low limit (PCL) for PV display

color change.

Parameter Name Setting Range

PV display color mode

(PCM)

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.

Setup Parameter Screen 2

Press to display
"PCM."

Press or

to display
"

The decimal point blinks during
data change.

Press .

This completes the process for
setting the PV display color mode.

"6."

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)

Press the SET/ENT key to display parameter "PCM."

Press the UP or DOWN key to display "6" on the DATA
display.

Press the SET/ENT key to accept PV display color
mode "6."

12.2 Setting Key Lock

Factory-Set

Value

1

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 to display
"LOC."
Press to display
"1."

The decimal point blinks during
data change.

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 to display
"ECO."
Press to display
"5."

The decimal point blinks during
data change.

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 "LOC."

Press the UP key to display "1" on the DATA display.

Press the SET/ENT key to accept this data.

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.

Press for more
than 3 sec.

Operation Parameter Screen

Press this key for
more than 3 sec.

Press the SET/ENT key for more than 3 sec.
This causes the Operation Parameter Screen to appear.

When you press the SET/ENT key for more than 3 sec.
with the Operation Parameter Screen displayed, the Setup
Parameter Screen 1 appears.

Continue to the upper right

Press to display

Press the SET/ENT key to display parameter "BS."

"BS."
Press to display

Press the UP key to display "1.0" on the DATA display.

"1.0."

The decimal point blinks during
data change.

Press .

6

Press the SET/ENT key to accept this data.

IM 77J04R31-01E 2nd Edition Oct. 15, 2019-00

13. MONITOR OUTPUT

-199.9°C

200.0°C

while 1 V is output when it is

-50.0°

C.)

precision resistor for current

output

Main unit

Socket

Setup Parameter Screen 2

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.

Range code No. 62

Input range available for the range
code No. 62 of the MVRK

Monitor output setting

Maximum monitor output value: 150.0°C
Minimum monitor output value: -50.0°C

Monitor output range

Fixed to 4 to 20 mA or 1 to 5 V DC

13.1.2 Setting Ranges and Factory-Set Values of Monitor Output (Analog)-Related

Parameter

13.1.3 Setting Monitor Output

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.”

Parameters

Setup Parameter Screen 2

Symbol

Parameter Name Setting Range

Maximum monitor output
value (RTH)

Minimum monitor output

value (RTL)

Visibility of monitor output

adjustment screen (MON)

Forced output of a monitor

output value (MAN)

Monitor output zero
adjustment (ZER)

Monitor output span

adjustment (SPN)

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).

Power ON

Operation Parameter Screen

Setup Parameter Screen 1

Press to display
"LOC."
Press to display
"-1."

The decimal point blinks during
data change.

Press .

Setup Parameter Screen 2

Press to display
"RTH."

Press to display
"150.0."

The decimal point blinks during
data change.

Press .

This completes the procedure
for setting the maximum
monitor output value.

Press .

Press to display
"RTL."

Press to display
"-50.0."

The decimal point blinks during
data change.

Press .

This completes the procedure
for setting the minimum monitor
output value.

Press this key for
more than 3 sec.

-50.0

(RTL)

1V

(5 V is output when the measured value is

RTL + 1 digit to 9999

Within the instrument input range

-1999 to RTH - 1 digit

Within the instrument input range

OFF (invisible) or ON (visible)
Set this parameter to “ON” for adjustments of monitor

output.

-25.0 to +125.0 (%)
Note that the assured range is -6.0 to +106 (%).

-19.99 to 20.00 (%) 0.00

-19.99 to 20.00 (%) 0.00

150.0
(RTH)

5V

150.0°

C,

Factory-Set

Value

Maximum value

of the instrument

input range

Minimum value

of the instrument

input range

OFF

(invisible)

0.0

When the power is turned on, the PV screen of the
Operation Parameter Screen appears.

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 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 "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 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.

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.

Power supply

L+

7

(SUPPLY)

N–

8

8 7 6 5

10 11 1 2

1

3

4

39

Monitor output

+

1

–

3

R: 250 Ω

R

DMM

(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.

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.

Setup Parameter Screen 2

Press to display
"MON."

Press to display

Press the SET/ENT key to display parameter "MON."

Press the UP key to display "ON" on the DATA display.
"ON."
Press .

This establishes the setting in which
the monitor output adjustment
screen becomes visible.

Press the SET/ENT key to accept the data.

Press to display

Press the SET/ENT key twice to display parameter "ZER."
"ZER."

The minimum output value
(1 V) is output forcibly.

(Displays a correction value
corresponding to the error.)

Press to display
"-0.20."

Press or

When this parameter (ZER) is displayed, the MVRK forcibly outputs
the minimum monitor output value (0%), regardless of input.

(Measured value [1.008 V]) - (Reference value [1 V])

Output span [4 V]

The monitor output is corrected by -0.2% because the error is
+0.008 V (+0.2%).

× 100 (%)Error =

Press the UP key to display "-0.20" on the DATA display.

Then press the UP or DOWN key to make fine

adjustments.

to make fine adjustments.

This completes the process for
adjusting the minimum monitor
output value.

Follow the same procedure as above to adjust the maximum monitor
output value.

The maximum output
value (5 V) is output

Make adjustments to the maximum monitor output value
by displaying parameter "SPN."

forcibly.

After adjusting the monitor output, set the MON parameter to "OFF" (making the adjustment
screen invisible).

Press to display
"OFF."

Press .

This establishes the setting in which
the monitor output adjustment
screen becomes invisible.

Display parameter "MON" and press the DOWN key to

display "OFF" on the DATA display.

Press the SET/ENT key to accept the data.

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.

When this parameter (MAN) is displayed, the MVRK forces

The minimum output value

the monitor output value to be output, regardless of input.

(1 V) is output forcibly.

Pressing causes

Press the UP key to display "50.0" on the DATA display.

the output value to increase.

The value equivalent to
50% of the output range

3 V is output forcibly. The MVRK continues to output
while this parameter is displayed on the screen.

(3 V) is output forcibly.

After completion of the forced output, return the MON parameter setting to "OFF" (making the
adjustment screen invisible).

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.

7

IM 77J04R31-01E 2nd Edition Oct. 15, 2019-00

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

Parameter

13.2.2 Setting the Communication-Related Parameters

Parameters

Setup Parameter Screen 2

Symbol

Operation Parameter Screen

Setup Parameter Screen 1

Setup Parameter Screen 2

Parameter Name Setting Range

Communication protocol

(PSL)

Communication address

(ADR)

Baud rate (BPS)

Parity (PRI)

Stop bit (STP) 1 or 2 (bits) 1

Data length (DLN) 7 or 8 (bits) 8

Power ON

Press this key for
more than 3 sec.

Press to display
"LOC."
Press to display
"-1."

The decimal point blinks during
data change.

Press .

Factory-Set

0: PC link

1: PC link with SUM

2: Ladder communication

1 to 99 1

1.2 (0: 1200 bps)

2.4 (1: 2400 bps)

4.8 (2: 4800 bps)
NON (0: None)
EVN (1: Even)

3: MODBUS ASCII
4: MODBUS RTU

9.6 (3: 9600 bps)

19.2 (4: 19200 bps)

38.4 (5: 38400 bps)
ODD (2: Odd)

Value

(PC link)

(9600 bps)

EVN

(Even)

When the power is turned on, the PV screen of the
Operation Parameter Screen appears.

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 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.

0

9.6

14. TROUBLESHOOTING

Possible Errors Occurring at Power ON

The following describes possible errors occurring at power ON.

Error Indication

Alarm

PV

Display

Undened Undened Undened

Indicator

Lamps

OFF OFF OFF

blinks

blinking

READY

Lamp

OFF Normal

OFF

Blinking

AL2

Possible Errors Occurring during Operations

The following describes errors that may occur during operations.

Error Indication

Alarm

PV

Display

blinks

Decimal

point

blinks

Indicator

Lamps

AL1 lights

AL2 lights AD error

Normal Normal

Normal Normal

Normal Normal Burnout

Normal Normal

READY

Lamp

Normal

Description

of Error

CPU

failure
Power
failure

EEP sum

error

RAM

error

ROM

error

Description of

Error

EEPROM error

Input exceeding

high limit

Input falling

below low limit

Communication

error

PV

Undened Undened Undened Undened

None

(0%)

None

(0%)

None

(0%)

PV

None

(0%)

110% of the

measured

range

-10% of the
measured

range

110% or

-10% of the
measured

range

Normal Normal Normal Normal

Alarm

Output

OFF Invalid 0% or less

OFF Invalid 0% or less

OFF Invalid 0% or less

Alarm

Output

OFF Invalid 0% or less

Normal Normal

Normal Normal

Normal Normal

Status

Monitor Output

RS-485 Analog

Status

Monitor Output

RS-485 Analog

106% or

more of the
output range

-6% or less

of the output
range

106% or
more or -6%

or less of
the output
range

Remedy

Failure.

Submit request

for us to repair.

Remedy

Failure.

Submit request

for us to repair.

Check input.

Check input.

Check input.

Press any key,
or if normal
communication
is made, a
communication

error will be

cleared.

Press to display
"PSL."

Press or

to display the communication
protocol number to use.

Press .

This completes the process for
setting the communication protocol.

Press .

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 the SET/ENT key to accept this data.

Press the SET/ENT key to display the next parameter.

Follow the same procedure to set the following parameters:

Parameter "ADR" for setting the communication address

Parameter "BPS" for setting the baud rate

Parameter "PRI" for setting the parity

Parameter "STP" for setting the stop bit

Parameter "DLN" for setting the data length

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.

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IM 77J04R31-01E 2nd Edition Oct. 15, 2019-00