Yokogawa MXT User Manual

User’s

Model Function A: Free program R: Temperature-pressure compensation S: Addition/Subtraction T: Multiplication/Division U: Square root extraction V: High selector W: Low selector

Input signal A: 0 to 50 mA DC Span is 1 mA or more 1: −10 to +10 V DC Span is 0.1 V or more

Output signal A: 0 to 20 mA DC Span is 2 mA or more B: 0 to 5 mA DC Span is 1 mA or more 1: 0 to 10 V DC Span is 0.1 V or more 2: 0 to 100 mV DC Span is 10 mV or more 3: −10 to +10 V DC Span is 0.2 V or more 4:

−100 to +100 mV DC Span is 20 mV or more

Power supply 1: 15-40 V DC (Operating range: 12 to 48 V DC) 2: 100-240 V AC (Operating range: 85 to 264 V AC)

Optional specification /R250: With 250 Ω receiving resistor

MXT- N - *B/

Manual

Model MXT Universal Computing Unit (3-input, Isolated 1-output Type)

IM 77J04X13-01E

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

IM 77J04X13-01E

1st Edition Aug. 2005 (YK)

2nd Edition Nov. 2005 (YK)

Network Solutions Business Division

2-9-32, Naka-cho Musashino-shi, Tokyo 180-8750 Japan Phone: +81-422-52-7179 Facsimile: +81-422-52-6793

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.

MODEL AND SUFFIX CODES

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.

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:

● MXT: 1

● Range label: 1

● Spacer: 1

● Receiving resistor (for current input): 3

● User’s Manual (this manual: IM 77J04X13-01E): 1

* When the optional specification “/R250” is specified, the 250 Ω

receiving resistor is attached. When the optional specification “/R250” is not specified, the 100 Ω receiving resistor is attached.

GENERAL

This plug-in type universal computing unit receives DC current or DC voltage signals, applies various computing functions to them, and then converts them into isolated DC current or DC voltage signals.

1. MOUNTING METHOD

10 11

1 2

8 7 6 5

10 11

1 2

8 7 6 5

RES

Power supply

L+

N–

GND

Output

Input-1

Input-3

R: Receiving resistor for current input

Input-2

1 2

7 8 9

Receiving resistor

(for current input)

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 computing unit 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

Unit: mm

Pitch: 56 or more

40⫾0.2

(51)

5 or more

Socket

2-⭋4.5 or 2-M4

Mounting

screws

Note:

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

(85)

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

2. INSTALLATION LOCATIONS

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

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

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

3. EXTERNAL WIRING

WARNING

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

Wires are connected to the terminals of the computing unit’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.

1.2 DIN Rail Mounting

Locate the computing unit 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.

1.3 Using Ducts

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

DIN rail

Spacer

Push

(Rear of the socket)

Slide lock

Fit into here

DIN rail

IMPORTANT

●

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

●

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

9) 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.

IM 77J04X13-01E 2nd Edition Nov 30, 2005-00

Power Supply and Isolation

Power supply rated voltage:

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

Power supply input voltage:

15-40 V DC (±20%) or 100-240 V AC (−15, +10%) 50/60 Hz

Power consumption:

24 V DC 1.9 W 100 V AC 3.6 VA, 200 V AC 5.2 VA

Insulation resistance:

100 MΩ or more at 500 V DC between input, output, power supply, and grounding terminals mutually. (Each input terminal is not isolated 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 computing unit of which the front panel cover is open.

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

No function

Output zero adjustment

Output span adjustment

No function

Rotation direction of adjustment switch

Clockwise

Increase of output adjusted value

Item to be adjusted

Adjustment operation

Connector for

communication

Selection switch

Adjustment switch

Operation indicating lamp: Turns on at power on.

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 computing unit 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 by the adjustment switch.

(3) When the lamp is blinking slowly:

The lamp repeats the slow blinking until the computing unit 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.”

4.2 Connector for Communication

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

< How to connect with the setting tool>

JUXTA communication cable with 5-pin connector (F9182EE)

JHT200 Handy T erminal

[Provided with VJ77 and JHT200]

Counterclockwise

Decrease of output adjusted value

[Adjusted volume by the adjustment switch]

One click changes about 0.005% of output range.

4.3.1 Adjusting Output Using the Switches on the Front Panel

(1) Output zero adjustment

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

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

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.

5. SETTING PARAMETERS

Set the parameters using a PC (VJ77 Parameters Setting Tool) or the Handy Terminal. Refer to “7. 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 [ ].

■ Setting Input Range

Set the 0% value of input range in [D25: INPUT L_RNG] and the 100% value of input range in [D26: INPUT H_RNG].

NOTE

Dedicated cable (E9786WK) [Provided with VJ77]

PC which is installed

with the VJ77

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

Dedicated adapter (E9789HA) [Provided with VJ77]

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

Changing the input range resets the input adjusted value.

■ Setting Output Range

Set the 0% value of output range in [D38: OUT1 L_RNG] and the 100% value of output range in [D39: OUT1 H_RNG].

NOTE

Changing the output range resets the output adjusted value.

IM 77J04X13-01E 2nd Edition Nov 30, 2005-00

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