Yokogawa MXD User Manual

User’s

Model Function A: Free program L: Analog memory M

: Peak holder N: Bottom holder P: Program setter (Note 1) Q

: Integrated pulse output

Input signal A: 0 to 50 mA DC Span is 1 mA or more B: 0 to 10 mA DC

Span is 0.1 mA or more 1: −10 to +10 V DC Span is 0.1 V or more 2: −2 to +2 V DC Span is 10 mV or more N: No analog input (Note 1)

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

Note 1: The input signal suffix code “N” is fixed when the program

setter is selected. However, the analog input is adjusted and inspected by 1 to 5 V DC of the input signal suffix code “1” before shipment.

MXD- N - *B/

Manual

Model MXD Universal Computing Unit (1-input, Isolated 1-output Type) <with Contact I/O>

IM 77J04X12-01E

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

IM 77J04X12-01E

1st Edition Aug. 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.

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:

● MXD: 1

● Range label: 1

● Spacer: 1

● Receiving resistor (for current input): 1

● User’s Manual (this manual: IM 77J04X12-01E): 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.

MODEL AND SUFFIX CODES

1. MOUNTING METHOD

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

Mounting

screws

Socket

2-4.5 or 2-M4

Pitch: 56 or more

5 or more

400.2

(51)

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.

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.

DIN rail

Spacer

Push

(Rear of the socket)

Slide lock

1.3 Using Ducts

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

Socket

Unit: mm

Fit into here

DIN rail

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.

Receiving resistor

(for current input)

Power supply

L+

N–

GND

Contact output

–

8 7 6 5

10 11

1 2

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.

Input

–

: Receiving resistor

for current input

Contact input

–

Output

–

IM 77J04X12-01E 1st Edition Aug 31,2005-00

+ 4 hidden pages