Yokogawa VJXS User Manual

User’s

Model Function A: Free program G: Limiter B: Moving average

H: Velocity computation C: Dead time J: Linearizer D: 1st-order lag K: Ratio setter E: 1st-order lead F: Uniform-speed response (velocity limiter)

Output 1: 1 output 2: 2 outputs

Power supply 6: 100-240 V AC/DC (Operating range: 85 to 264 V) 7: 15-30 V DC

(Operating range: 12 to 36 V)

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

Output-1 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

Output-2 signal A: 4 to 20 mA DC 6: 1 to 5 V DC N: No output-2

Optional specification /R250: With 250 Ω receiving resistor /SN: Without socket

VJXS- - 0/

Manual

Model VJXS Universal Computing Unit (Isolated 1-output, Isolated 2-output Type)

IM 77J01X11-01E

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

IM 77J01X11-01E

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.

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:

● VJXS: 1

● Range label: 1

● Receiving resistor (for current input): 1

● User’s Manual (this manual: IM 77J01X11-01E): 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

Loosen the main unit-fixing screw of the computing unit to disconnect the main unit from the socket. Next, anchor the socket onto the wall with screws. Then, plug the main unit into the socket and secure the main unit with the main unit-fixing screw.

Mounting

screws

Socket

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

Main unit

Connector for communication

Hole for main unit-fixing screw

Main unit-fixing screw

29.5 or more

22±0.2

59±0.3

2-M4 or 2-ø4.5 or more

Unit: mm

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.

Fit into here

DIN rail

Push

(Rear of the socket)

DIN rail

Slide lock

1.3 Mounting Using a Multi-mounting Base

For mounting using a multi-mounting base, refer to the User’s Manual for VJCE (VJ Mounting Base)(IM 77J01C51-01E).

1.4 Using Ducts

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

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 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.

Shunt resistor

(External receiving

resistor for

current input)

3 2

789

1011

Power supply

1110 8

N–

L+

GND

Input signal

–

: Receiving resistor

for current input

Output-2

–

Output-1

–

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.

8) 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 77J01X11-01E 2nd Edition Nov 30,2005-00

Power Supply and Isolation

Power supply rated voltage:

100-240 V AC/DC 50/60 Hz or 15-30 V DC

Power supply input voltage:

100-240 V AC/DC (−15, +10%) 50/60 Hz or 15-30 V DC (±20%)

Power consumption:

24 V DC 2.3 W, 110 V DC 2.2 W 100 V AC 4.6 VA, 200 V AC 6.4 VA

Insulation resistance:

100 MΩ or more at 500 V DC between input, output-1, output-2, power supply, and grounding terminals mutually.

Withstand voltage:

2000 V AC for 1 minute between input, (output-1, output-2), power supply and grounding terminals mutually. 1000 V AC for 1 minute between output-1 and output-2 terminals.

4. DESCRIPTION OF FRONT PANEL

5. SETTING PARAMETERS

Set the parameters using a PC (VJ77 Parameter 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 [D27: INPUT1 L_RNG] and the 100% value of input range in [D28: INPUT1 H_RNG].

NOTE

Changing the input range resets the input adjusted value.

■ Setting Output-1 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].

Connector for

communication

4.1 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)

[Provided with VJ77 and JHT200] JHT200 Handy T erminal

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

Dedicated adapter (E9789HA) [Provided with VJ77]

Dedicated cable (E9786WK) [Provided with VJ77]

PC which is installed

with the VJ77

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

NOTE

Changing the output-1 range resets the output adjusted value.

6. COMPUTING FUNCTIONS

6.1 VJXS-A Free Program

This computing unit is used to meet individual applications by programming the available commands using a PC (VJ77 Parameters Setting Tool) or the JHT200 Handy Terminal. Set the computing program in G01 to G59.

6.2 VJXS-B Moving Average Computation

This computing unit stores the input values (X) sampled at intervals of one-fortieth of the moving-average time (L) into 40 buffers in order, and outputs the moving average of 40 input values (output-1 = Y1, output-2 = Y2). The output between samplings is smoothed out by interpolation. Minimum sampling time is the set computation cycle. Therefore, when the moving-average time is set shorter, the number of samplings is less than 40. When using a first-order lag filter for input (X), set the first-order lag time constant (T). Set the moving-average time (L) at % value in H02: CONST. The value of 0 to 100.0% corresponds to that of 0 to 1000 seconds. For example, enter “6” in H02 to set 60 seconds.

● Setting range of moving-average time: 0 to 320000 seconds (about 3.7 days) with 4 significant digits; minimum unit is 1 second (however, 0.1 second for a setting of 4 seconds or shorter).

0.0 to 32000% can be set in H02. ( e.g. 12345% unacceptable, 12340% acceptable)

● Setting accuracy of moving-average time : ( ±5.0% of set value) ±1 second

Set the first-order lag time constant (T) at % value in H01: CONST. The value of 0 to 100% corresponds to that of 0 to 100 seconds.

● Setting range of first-order lag time constant:

1.0 to 799.0 seconds; minimum unit is 0.1 second. However, when not using the first-order lag function, set 0 second.

● Setting accuracy of first-order lag time constant : (±5.0% of set value) ±1 second

1+X2+ • • • • • X40

Moving average=

40 (Note)

Computation time

Time

Note: For the moving-average times at 3, 2 and 1

second, the number of samplings is 30, 20 and 10, respectively (when the computation cycle is 100 ms).

IM 77J01X11-01E 2nd Edition Nov 30,2005-00

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