Yokogawa MU5 User Manual

User’s
Manual

Model MU5
Universal Temperature
Converter
(Free Range Type)

IM 77J04U05-01E

Please read through this User’s Manual before use for correct handling.
Please keep this User’s Manual for future reference.

IM 77J04U05-01E

Copyright© July 2005

3rd Edition Oct. 2007 (YK)

Network Solutions Business Division

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

CAUTIONARY NOTES FOR SAFE USE
OF THE PRODUCT

This User’s Manual should be carefully read before installing and oper­ating the product. The following symbol is used on the product and in
this manual to ensure safe use.

This symbol is displayed on the product when it is neces­sary to refer to the User’s Manual for information on per­sonnel and instrument safety. This symbol is displayed in
the User’s Manual to indicate precautions for avoiding dan­ger to the operator, such as an electric shock.

The following symbols are used only in this manual.

IMPORTANT

Indicates that operating the hardware or software in a particu­lar manner may cause damage or result in a system failure.

NOTE

Draws attention to essential information for understanding
the operations and/or functions of the product.

MODEL AND SUFFIX CODES

MU5 -01 - 00 /

Model

Output

1: 1 output

Power supply

1: 15-40V DC (Operating range: 12 to 48 V)
6: 100-240 V AC/DC (Operating range: 85 to 264 V)

Input signal

U:Thermocouple, RTD, mV
Z: (Custom order)

Customized thermocouple or RTD

Output signal

A: 0 to 20 mA DC Span is 5 mA or more
B: 0 to 5 mA DC Span is 1 mA or more
1: −10 to +10 V DC Span is 0.1 V or more
2: −100 to +100 mV DC Span is 10 mV or more
Z: (Custom order)

Customized current signals or voltage signals

Optional specification

/SN: Without socket
/RJCN: Without RJC sensor

CHECKING PRODUCT SPECIFICATIONS
AND PACKAGED ITEMS

(1) Checking the Model and Product Specifications

Check that the model and specifications indicated on the nameplate
attached to the main unit are as ordered.

(2) Packaged Items

Check that the package contains the following items:

● MU5: 1

● RJC sensor (A1167HT): 1

(RJC sensor is not attached for the optional specification
“/RJCN.”)

● Spacer (for DIN rail mounting): 1

● Range label: 1

● User’s Manual (this manual: IM 77J04U05-01E): 1

GENERAL

The MU5 is a plug-in type universal termperature converter that is con­nected to an IEC/JIS-standard thermocouple, converts the tempera­ture signals into isolated DC current or DC voltage signals.

1

1. MOUNTING METHOD

y

e

al

3. EXTERNAL WIRING

NOTE

Plug/disconnect the main unit into/from the socket
vertically to the socket face. Otherwise the terminals may
bend and it may cause bad contact.

1.1 Wall Mounting

Unfasten the upper and lower stoppers of the converter to disconnect
the main unit from the socket. Next, anchor the socket onto the wall
with two M4 screws. Then, plug the main unit into the socket and se­cure the main unit with the upper and lower stoppers.

Stopper

Main unit

Socket

Mounting

screws

[Mounting Dimensions]

Socket

2-4.5 or 2-M4

400.2

Pitch: 56 or more

5 or more

(51)

Unit: mm

Note:

• When mounting the units
close together, leave a space
of at least 5 mm between
them.

(85)

• Use the supplied spacer to
keep a space of 5 mm for
DIN rail mounting.

1.2 DIN Rail Mounting

Locate the converter so that the DIN rail fits into the upper part of the
DIN-rail groove at the rear of the socket, and fasten the socket using
the slide lock at the lower part of the socket.

Fit into here

DIN rail

DIN rail

Push

Spacer

(Rear of the socket)

Slide lock

1.3 Using Ducts

Wiring ducts should be installed at leaset 30 mm away from the top or
bottom of the main unit.

2. INSTALLATION LOCATIONS

● Avoid the following environments for installation locations:
Areas with vibration, corrosive gases, dust, water, oil, solvents, di­rect sunlight, radiation, a strong electric field, and/or a strong
magnetic field
Installation altitude: 2000 m or less above sea level.

● If there is any risk of a surge being induced into the power line
and/or signal lines due to lightning or other factors, a dedicated
lightning arrester should be used as protection for both this con­verter and a field-installed device.

● Operating temperature/humidity range: 0 to 50C/5 to 90%RH (no
condensation)

WARNING

To avoid the risk of an electric shock, turn off the power
supply and use a tester or similar device to ensure that no
power is supplied to a cable to be connected, before carring
out wiring work.

Wires are connected to the terminals of the converter’s socket. M3.5
screw terminals are provided for the connection of external signals. At­tach a crimp-on lug to each wire for connection to the terminals.

● Recommended cables: A nominal cross-sectional area of 0.5 mm
or thicker for signal cables, and that of 1.25 mm2 or thicker for
power cables.

Signal
line

6.5 or more

RJC
sensor

Input Signal (Input type can be changed.)

(Unit: mm)

mV

+

−

Output

+

1

−

2

RTD

A

3

B

4

B

TC

+

RJC

3

−

4

5

3

4

5

RJC
sensor

T

rmin

Power Suppl

GND

6

L

+

7

N

−

8

Recommended crimp-on lug size

ø3.7 to 4.0

7 or less

* Attach the RJC sensor correctly as shown in the figure above

only for thermocouple input.

IMPORTANT

●

Connect the RJC sensor at the correct position as shown
above. Otherwise temperatures cannot be measured
correctly.

●

Connect the RJC sensor so that it overlaps the input sig­nal line.

●

Handle the RJC sensor lead wire with care to prevent dis­connection.

●

The power line and input/output signal lines should be
installed away from noise-generating sources. Other
wise accuracy cannot be guaranteed.

●

The grounding resistance must be 100 Ω (JIS Class D
grounding). The length and thickness of the grounding
cable should be as short and thick as possible. Directly
connect the lead from the ground terminal (terminal no.

6) of the product to the ground. Do not carry out daisy­chained inter-ground terminal wiring.

●

Use of the product ignoring the specifications may cause
overheating or damage. Before turning on the power, en­sure the following:

(a)Power supply voltage and input signal value applied to the

product should meet the required specifications.

(b)The external wiring to the terminals and wiring to ground

are as specifications.

●

Do not operate the product in the presence of flammable
or explosive gases or vapors. To do so is highly danger­ous.

●

The product is sensitive to static electricity; exercise
care in operating it. Before you operate the product,
touch a nearby metal part to discharge static electricity.

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IM 77J04U05-01E 3rd Edition Oct. 15, 2007-00

Power Supply and Isolaion

Power supply rated voltage:

15-40 V DC or 100-240 V AC/DC 50/60 Hz

Power supply input voltage:

15-40 V DC (±20%) or 100-240 V AC/DC (−15, +20%) 50/60
Hz

Power consumption:

24 V DC 1.7 W, 110 V DC 1.6 W
100 V AC 3.5 VA, 200 V AC 4.9 VA

Insulation resistance:

100 MΩ at 500 V DC between input, output, power supply, and
grounding terminals mutually.

Withstand voltage:

2000 V AC for 1 minute between input, output, power supply and
grounding terminals mutually.

4. DESCRIPTION OF FRONT PANEL

The figure below shows the converter of which the front panel cover is
open.

Connector for
communication

Selection
switch

Adjustment
switch

4.1 Operation Indicating Lamp

The operation indicating lamp shows the operation status, abnormali­ties in a setting, and adjustment operation status by the adjustment
switch on the front panel.

(1) When the lamp is lit:

Power is turned on and the converter is in the normal status pro­vided that the selection switch is set to the position “0.”

(2) When the lamp is blinking rapidly:

The lamp repeats the rapid blinking until the internal processing is
completed during output adjustment and wiring resistance correc­tion by the adjustment switch.

(3) When the lamp is blinking slowly:

The lamp repeats the slow blinking until the converter regains its
normal status when the following abnormalities occur.

• Abnormalities in a parameter setting

• The selection switch is set to the positions other than “0.”

• Input is outside of the range of −10 to 110%.

• OFF of RJC and error of RJC.

4.2 Connector for Communication

Use the connector for communication when setting the parameters us­ing a PC (VJ77 Parameter Setting Tool) or the Handy Terminal.

JUXTA communication cable with 5-pin connector (F9182EE)
[Provided with VJ77 and JHT200]

JHT200
Handy Terminal

Dedicated adapter (E9789HA)
[Provided with VJ77]

Dedicated cable (E9786WK)
[Provided with VJ77]

PC which is installed
with the VJ77.

Operation indicating lamp:
Turns on at power on.

Modular jack conversion
adapter (E9786WH)
[Provided with VJ77]

*: Use the VJ77 of version R1.04 or later.

4.3 Selection Switch and Adjustment Switch

The following adjustments can be performed using the switches on the
front panel (selection switch and adjustment switch) without the dedi­cated setting tool (refer to“4.2 Connector for Communication”).
The adjusted value is saved about 1 second after operating the adjust­ment switch. Also when the rotation direction of the adjustment switch
is changed, the adjusted value becomes effective about 1 second after
the change.

Position of selection switch

0

No function

1

Output zero adjustment

2

Output span adjustment

5

Wiring resistance correction

7

ON/OFF of RJC

Rotation direction of adjustment switch

Clockwise

Counterclockwise

Increase of output adjusted value, execution of
wiring resistance correction and ON of RJC
Decrease of output adjusted value, reset of wiring
resistance corrected value and OFF of RJC

[Adjusted volume by the adjustment switch]

One click changes about 0.005% of output range.
For thermocouple input, turn off the RJC.

4.3.1

Adjusting Output Using the Switches on the Front

Panel

(1) Output zero adjustment

Apply the 0% input signal. Turn the selection switch to “1.” Then
turn the adjustment switch clockwise to increase the output, or
turn it counterclockwise to decrease the output.

(2) Output span adjustment

Apply the 100% input signal. Turn the selection switch to “2.” Then
turn the adjustment switch clockwise to increase the output, or
turn it counterclockwise to decrease the output.

4.3.2

Correcting Wiring Resistance Using the Switches on the Front

Panel

When an error occurs due to the influence of the input wiring resis­tance, perform the wiring as the figure below, apply a stable input, and
execute the following operations. Then the wiring resistance can be
corrected automatically.

<Thermocouple>

Short-circuit at the cable end.

<RTD>

Short-circuit at the cable end.

Be sure to turn the adjustment switch counterclockwise to reset the
corrected value before executing the wiring resistance correction.

(1) Executing the wiring resistance correction

Turn the selection switch to “5”, and turn the adjustment switch
clockwise. Then the wiring resistance is adjusted after 1 second
automatically.

(2) Resetting the wiring resistance corrected value

Turn the selection switch to “5”, and turn the adjustment switch
counterclockwise. Then the adjusted value is reset after 1 sec­ond.

Item to be adjusted

Adjustment operation

MU5

MU5

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IM 77J04U05-01E 3rd Edition Oct. 15, 2007-00

4.3.3 Turning on/off the RJC Using the Switches on the
Front Panel.

This operation is only for thermocouple input.
Turn the selection switch to “7”. Turn the adjustment switch coun­terclockwise to turn off the RJC sensor after 1 second. Turn the
adjustment switch clockwise to turn on the RJC sensor after 1
second.

NOTE

●

Be sure to set the selection switch back to the position
“0” after each adjustment. Otherwise it may cause an in­correct operation or malfunction because the positions
other than “0” are adjustment modes.

●

When the selection switch is set to the positions other
than “0”, the setting tool can not be used for the setting.

●

The RJC is turned on when the power is turned on again
after turned off.

5. SETTING PARAMETERS

Set the parameters using a PC (VJ77 Parameter Setting Tool) or the
Handy Terminal. Refer to “6. List of Parameters” in this manual and the
User’s Manual for VJ77 PC-based Parameters Setting Tool (IM
77J01J77-01E) or the User’s Manual for JHT200 Handy Terminal (IM
JF81-02E). Parameters are indicated inside the [ ].
The initial value of the input range is set up according to the selected
values of the input sensor type, input type and temperature unit.
Set the parameters as follows.

Setting regarding to the input: set sequentially from 1.
(1) Set the input sensor type.
(2) Set the input type.
(3) Set the temperature unit for temperature input.
(4) Set the input range.

5.1 Setting Thermocouple Type

Set the thermocouple type to be connected to the input in [D08: TC
TYPE].

Display

TYPE K
TYPE E
TYPE J
TYPE T
TYPE W3

TYPE W3: W97Re3-W75Re25

TYPE W5: W95Re5-W74Re26

Measuring Range

−270 to 1372 C

−270 to 1000 C

−210 to 1200 C

−270 to 400 C

0 to 2300 C

(Tungsten 97% Rhenium 3% - Tungsten 75% Rhenium 25%)

The abbreviation of ASTM E988 Standard.

(Tungsten 95% Rhenium 5% - Tungsten 74% Rhenium 26%)
The abbreviation of ASTM E988 Standard.

Measuring

span

3mV

or more

Display

TYPE R
TYPE S
TYPE B
TYPE N
TYPE W5

Measuring Range

−50 to 1768 C

−50 to 1768 C

0 to 1820 C

−270 to 1300 C
0 to 2300 C

5.2 Setting RTD Type

Set the RTD type to be connected to the input in [D09: RTD TYPE].

Display

Pt100-68

JPt100

Pt50

Pt100-90

Type of Input
Pt100 (IPTS-68: JIS'89)
JPt100 (JIS'89)
Pt50 (JIS'81)
Pt100 (ITS-90: JIS'97)

JPt100 (JIS '89) : R0 = 100 Ω, R100/R0 = 1.3916
Pt100 (IPTS-68) : R0 = 100 Ω, R100/R0 = 1.3850
Pt100 (ITS-90) : R0 = 100 Ω, R100/R0 = 1.3851

Measuring range

−200 to 660 °C

−200 to 510 °C

−200 to 649 °C

−200 to 850 °C

5.3 Setting Temperature Unit

Set the temperature unit of the input range in [D19: UNIT].

5.4 Setting Burnout Action

Set the burnout action in [D43:BURN OUT].
Set "OFF", "UP", or "DOWN."

NOTE

Measuring

span

3mV

or more

Measuring span

10°C

or more

5.5 Setting Input Range

Set the input range 0% in [D27:INPUT1L_RNG], and the input range
100% in [D28:INPUT1H_RNG].

5.6 Correcting Wiring Resistance

Correct the wiring resistance in [P01:WIRING R].
Select “EXECUTE” for correction, and “RESET” for resetting the cor­rected value.
Perform wiring as the figure shown in “4.3.2 Correcting Wiring Resis­tance Using the Switches on the Front Panel” before correcting the wir­ing resistance.

6. LIST OF PARAMETERS

Parameter Display Item

MODEL
TAG NO
SELF CHK

A

DISPLAY1

A01

INPUT1

A07

OUTPUT1

A54

STAT US

A56

REV NO

A58

MENU REV

A60

SELF CHK

B

DISPLAY2

B01

INPUT1

B07

OUTPUT1

B60

SELF CHK

D

SET (I/O)

D01

TAG NO.1

D02

TAG NO.2

D03

COMMENT1

D04

COMMENT2

D07

SENSOR TYPE

D08

TC TYPE

D09

RTD TYPE

D13

LINEARIZE

D19

UNIT

D27

INPUT1 L_RNG

D28

INPUT1 H_RNG

D38

OUT1 L_RNG

D39

OUT1 H_RNG

D43

BURN OUT

D49

OUT1 DR

D60

SELF CHK

P

ADJUST

P01

WIRING R

P02

IN1 ZERO ADJ

P03

IN1 SPAN ADJ

P26

OUT1ZERO ADJ

P27

OUT1SPAN ADJ

P60

SELF CHK

Q

TEST

Q01

RJC

Q03

OUT1 TEST

Q60

*1 The displayed status is to let the service staff know the past records of the

*2 Displayed only when the parameter D07:SENSOR TYPE is set to “TC”.
*3 Displayed only when the parameter D07:SENSOR TYPE is set to “RTD”.
*4 Displayed only when the parameter D07:SENSOR TYPE is set to “mV”.

SELF CHK

product.

Model
Tag number
Self-check result

Display1

Input-1
Output-1

1

Status *
REV No.
MENU REV
Self-check result

Display2

Input-1
Output-1
Self-check result

Setting (I/O)

Tag number-1
Tag number-2
Comment-1
Comment-2
Input sensor type
Thermocouple type
RTD type

*3

Linearization
Temperature unit

*2

*4

*2, *3

Input-1 low range
Input-1 high range
Output-1 low range
Output-1 high range
Burnout
Direction of output-1 action
Self-check result

Adjustment

Wiring resistance correction
Input-1 zero adjustment
Input-1 span adjustment
Output-1 zero adjustment
Output-1 span adjustment
Self-check result

Test

ON/OFF of RJC

*2

Forced output-1
Self-check result

●

Changing the input range and the burnout action
direction resets the input adjusted value and the wiring
resistance corrected value.

●

Execute the wiring resistance correction when the
burnout action direction or input wiring is changed.

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IM 77J04U05-01E 3rd Edition Oct. 15, 2007-00

7. MAINTENANCE

t

The product starts running immediately when the power is turned on; however, it needs 10 to 15 minutes of warm-up before it meets the specified per­formance.

7.1 Calibration Apparatus

● A DC voltage/current standard (Yokogawa 7651 or the equivalent)

● A 6-dial variable resistor (Yokogawa M&C 27931 or the equivalent)

● A digital mutimeter (Yokogawa 7561 or the equivalent)

● A precision resistor of 250 Ω ±0.01%, 1 W

● A setting tool for adjustment (Refer to “4.2 Connector for Communication” in this manual.)

7.2 Calibration Procedure

(1) Connect the instruments as shown below.
(2) When the input type is thermocouple:

(2-1) Turn off the RJC using the switches on the front panel, or through the setting tool.
(2-2) Use the DC voltage/current standard and apply the electromotive force equivalent to 0, 25, 50, 75, and 100% of the measuring range to the

(3) When the input type is RTD:

(4) When the input type is mV DC:

(5) Check to see the corresponding output voltages are 0, 25, 50, 75, and 100% respectively and within the specified accuracy rating.

● Use the setting tool (VJ77 Parameter Setting Tool or JHT200 Handy Terminal) or the switches on the front panel (selection switch and adjustment

Input Adjustment Procedure

(1) Input the value equivalent to 0% value of input range.
(2) Call the display item (A: DISPLAY1) to check the input value in A01: INPUT1.
(3) If the adjustment is necessary, call the adjustment item (P: ADJUST).
(4) Select P02: IN1 ZERO ADJ to enter the adjustment mode. Select EXECUTE (adjustment) for adjustment. (If RESET is selected, the adjusted

(5) Input the value equivalent to 100% value of input range.
(6) Call the display item (A: DISPLAY1) to check the input value in A01: INPUT1.
(7) If the adjustment is necessary, call the adjustment item (P: ADJUST).
(8) Select P03: IN1 SPAN ADJ to enter the adjustment mode. Select EXECUTE (adjustment) for adjustment. (If RESET is selected, the adjusted

Output Adjustment Procedure

(1) When adjusting 0% value of output, call the adjustment item (P: ADJUST) to select P26: OUT1ZERO ADJ.
(2) If it slips out to (+) side, set (−) value equivalent to slipout; if slips out to (−) side, set (+) value equivalent to slipout.
*: The 100% value of output can be adjusted by the same operation as the above.

converter.

Use the 6-dial variable resistor and apply the resistance equivalent to 0, 25, 50, 75, and 100% of the measuring range to the converter.

Use the DC voltage/current standard and apply input signals equivalent to 0, 25, 50, 75, and 100% of the input span to the converter.

“R0” is used for current output.

switch) to adjust the input/output signals.
For thermocouple input, turn off the RJC.

value is reset to the factory-set default.)

value is reset to the factory-set default.)

For adjustment using a setting tool, refer to the User’s Manual for each setting tool and “6. List of Parameters” in this manual.
For adjustment using the switches on the front panel, refer to “4.3 Selection Switch and Adjustment Switch.”
User’s Manual for VJ77 [Document No.: IM 77J01J77-01E]; however, use the VJ77 of version R1.04 or later.
User’s Manual for JHT200 [Document No.: IM JF81-02E]

Input

Power supply

GND

6

L+

7

N−

8

Outpu

+

1

Digital

R

multimeter

2

−

R0: 250 Ω precision resistor
for current output

3

4

A

3

B

4

5

B

TC, mV

+

DC voltge/
current
standard

−

RTD

6-dial
variable
resistor

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IM 77J04U05-01E 3rd Edition Oct. 15, 2007-00