Yokogawa VJS7 User Manual

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Page 1

User’s Manual

Model VJS7 Potentiometer Converter

(Isolated Single-output and Isolated Dualoutput Types)

Thank you for purchasing the JUXTA Signal Conditioner. Please read through this manual before use for correct handling.

IM 77J01S07-01E

5th Edition Mar. 2012(YK)

Network Solutions Business Division

2-9-32, Naka-cho Musashino-shi, Tokyo 180-8750 Japan Phone: +81-422-52-7179 Facsimile: +81-422-52-6619

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 usage.

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

The following symbols are used only in this manual.

Note

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

CHECKING PRODUCT SPECIFICATIONS AND PACKAGE

(1) Checking the Model and Product Specications

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

(2) Packaged Items

Check that the package contains the following items:

• VJS7: 1

• Tag number label: 1

• Range label: 1

• User's Manual (this manual)

GENERAL

This plug-in type converter is used in combination with transmitters which send displacement information of regulator valves by resistance change signals from a potentiometer, and converts the resistance change into isolated DC current or DC voltage signals. Output-2 can be selected from DC voltage signal, DC current

signal, communication function (RS-485), or alarm output (2 relay contacts).

Various parameters such as input range can be set and modied

using a PC (VJ77) or Handy Terminal (JHT200 and the like).

MODEL AND SUFFIX CODES

Model Sufx codes Description VJS7 -0 □ □ -□ □ □ 0 /□□ Potentiometer Converter

Output conguration

Power supply 6 100-240 V AC/DC

Input signal -1 Potentiometer resistance

Output-1 A 4 to 20mA DC

Output-2 A 4 to 20mA DC

Options Blank: With socket

*1 Operating range: 85-264 V *2 Operating range: 12-36 V *3 DC voltage signal or DC current signal

-0 Always 0 1 Single 2 Dual

7 15-30V DC

(Total resistance: 100Ω to 10kΩ)

B 2 to 10mA DC C 1 to 5mA DC D 0 to 20mA DC E 0 to 16mA DC F 0 to 10mA DC G 0 to 1mA DC 1 0 to 10mV DC 2 0 to 100mV DC 3 0 to 1V DC

4 0 to 10V DC 5 0 to 5V DC 6 1 to 5 V DC 7 −10 to +10V DC Z (Custom Order)

6 1 to 5V DC P Communication function

(RS-485)

T High/low limit alarm output

(2 relay contacts)

N None

0 Always 0

/SN Without socket

[STYLE: S1]

(*1)

(*2)

(*3)

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1. MOUNTING METHOD

Mounting

Note

Insert/pull out the main unit into/from the socket vertically to the face of socket. Otherwise the terminals are bent and it may cause a bad contact.

1.1 Wall Mounting

Loosen the main unit-xing screw of the product and pull out the main unit from the socket. Fix the socket on the wall with screws. Next, insert the main unit into the socket and fasten the main unit with the main unit-xing screw.

screws

Main unit

Mounting Dimensions

Socket

29.5 or more

22±0.2

Unit: mm

2-M4 or 2-ø4.5 or more

Wiring should be connected to the terminals on the socket of the product. The terminals for external connections are of M3 screws. Use crimp-on terminal lugs for connections to the terminals. Recommended cables: A nominal cross-sectional area of

0.5 mm2 or thicker for signal cables, and that of 1.25 mm2 or thicker for power cables.

Input

100%

CENTER

Power Supply

1110 8

N–

L+

GND

3 2

1011

789

Output-2

Analog output

–

Output-1

Analog output

–

Alarm output

ALM1

COM

ALM2

RS-485

Communication

B+

A–

COM

Main unit-fixing screw

Threaded hole for fixing the main unit

59±0.3

1.2 DIN Rail Mounting

Insert a DIN rail into the upper part of the DIN rail groove on the rear of the socket, and then slide the slide lock at the lower part of the socket upwards until the socket is xed into position as shown below

Fit into here

DIN rail

Push

(Rear of socket)

DIN rail

Slide look

1.3 Mounting Using

When using a multi-mounting base, see the User's Manual for VJCE (VJCE Mounting Base).

1.4 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 LOCATION

● Avoid the following environments for installation locations: Areas with vibration, corrosive gases, dust, water, oil, solvents, direct sunlight, radiation, a strong electric eld, and/or a strong magnetic eld, altitude of more than 2000m 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 eld-installed device.

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

Note

● Do not use output-2 for the single-output type.

● 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 or less

(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 daisy-chained inter-ground terminal wiring

● 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.

● Do not operate the product in the presence of

ammable 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.

● The use of inductance (L) loads such as auxiliary

relays and solenoid valves causes malfunction or relay failure; always insert a CR lter or diode for spark-removal into the line in parallel with the load. Recommended CR

• C: 0.5 to 1F against contact current 1 A

• R: 0.5 to 1 against contact voltage 1 V

● For 15-30 V DC

measure, always install a circuit breaker (an IEC 60947-compatible product, 5 A, 100 V or 220 V AC) in an easily accessible location near the instrument. Moreover, provide indication that the switch is a device for turning off the power to the instrument.

(±20%) power supply, as a safety

3. EXTERNAL WIRING

WARNING

Be sure to turn OFF the power supply before wiring to avoid the risk of electric shock. Use a tester or similar device to ensure that no power is being supplied to a cable to be connected.

IM 77J01S07-01E 5th Edition Mar. 02, 2012-00

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4. DESCRIPTION OF FRONT PANEL

How to connect with the setting tool

4.1 Front Panel

The communications connector in the front panel is used for setting up parameters through a PC (VJ77 PC-based Parameters Setting Tool) or the Handy Terminal. The alarm-1 and alarm-2 LEDs light up if an alarm occurs (those LEDs are provided only when the output-2 is specied for alarm output).

Communications connector

Alarm-1 LED Alarm-2 LED

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

JUXTA communication cable with 5-pin connector (F9182EE)

JHT200 Handy Terminal

PC which is installed with the VJ77

● Use the VJ77 of version R1.04 or later.

● The modular jack conversion adapter does not come with the JHT200 Handy Terminal. It is sold separately.

[Provided with VJ77 and JHT200]

Dedicated cable (E9786WK) [Provided with VJ77]

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 [ ].

5.1 Settings Related to Inputs and Outputs

5.1.1 Total resistance

Set the total resistance in [D06: RESIST]. Setting range: 100 to 10000 Ω

5.1.2 Input Range

Set the 0% value of input range in [D22: INPUT1 L_RNG],

and the 100% value of input range in [D23: INPUT1 H_RNG].

5.1.3 Burnout

Set the burnout operation in [D30: BURN OUT]. Set “OFF”, “UP”, or “DOWN.”

5.1.4 Direction of Output Action

Analog output signals can be reversed. To reverse the

signal from output-1, set [D38: OUT1 DR] to REVERSE. For output-2, set [D39 OUT2 DR] to REVERSE. To return the output-1 signal to normal, set [D38: OUT1 DR] to DIRECT. For output-2, set [D39: OUT2 DR] to DIRECT.

5.2 Settings Related to Communication

Function

Set the following parameters when output-2 is specied for communication function. For more information on the communication function, see the Instruction Manual for VJ Series

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

Dedicated adapter (E9789HA) [Provided with VJ77]

Communication Function (IM 77J1J11-01E).

5.2.1 Communication Protocol

Set the communication protocol by selecting from among

PCLINK, PC-LINK WITH SUM, MODBUS ASCII, MODBUS RTU, and LADDER in [F01: PROTOCOL].

5.2.2 Communication Address

Set the address number of the isolator numerically in a range

of 1 to 99 in [F02: ADDRESS].

5.2.3 Baud Rate

Set the baud rate by selecting from among 1200, 2400, 4800,

and 9600 bps in [F03: BAUD RATE].

5.2.4 Parity

Select and set NONE, EVEN, or ODD in [F04: PARITY].

5.2.5 Data Length

Select and set 7 bits or 8 bits in [F05: DATA LEN].

5.2.6 Stop Bit

Select and set 1 bit or 2 bits in [F06: STOP BIT].

5.2.7 Input Decimal Point Position

Number of digits of decimal places can be set.

Select and set among 0 to 5 digits in [F07: INPUT DEC PT].

5.3 Settings Related to Alarm Output

Set the following parameters when output-2 is specied for alarm output.

5.3.1 Alarm Setpoints

Set the alarm setpoints of alarm-1 and alarm-2 in [E03: SET

POINT1] and [E04: SET POINT2] numerically.

• Setting range: A range of 0 to 100% of input range

• Setting resolution: 0.1%

5.3.2 Direction of Alarm Action

Select the direction of alarm-1 action and that of alarm-2

action from among HIGH ALM (high-limit alarm) and LOW ALM (low-limit alarm) and set each in [E05: ALM1 ACTION] (direction of alarm-1 action) or [E06: ALM2 ACTION] (direction of alarm-2 action).

• To activate alarm status when input signal ≥ alarm setpoint, select HIGH ALM.

• To activate alarm status when input signal ≤ alarm setpoint, select LOW ALM.

5.3.3 Hysteresis

Set alarm-1 and alarm-2 hysteresis, in [E09: HYSTERESIS1]

and [E10: HYSTERESIS2]. Hysteresis is a value added to the alarm setpoint in order for an alarm status to be released (to normal) after the alarm status has been activated. The alarm status will be released in the following conditions, depending on the direction of alarm action.

1. * When HIGH ALM (high-limit alarm) is set: Alarm is released when input signal < (alarm setpoint - hysteresis).

2. * When LOW ALM (low-limit alarm) is set: Alarm is released when input signal > (alarm setpoint + hysteresis).

• Setting range: A range of 0 to 100% of input range

• Setting resolution: 0.1%

IM 77J01S07-01E 5th Edition Mar. 02, 2012-00

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5.3.4 Alarm ON Delay and Alarm OFF Delay

[1]: Alarm status does not continue for more than 1 second after

Set alarm-1 and alarm-2 ON delays in [E11: ON DELAY1] and

[E12: ON DELAY2] and then alarm-1 and alarm-2 OFF delays

in [E13: OFF DELAY1] and [E14: OFF DELAY2]. An alarm ON delay is a delay time from the establishment of alarm condition to alarm output; an alarm OFF delay is a delay time from the establishment of return-to-normal condition to output.

• Setting range: 0 to 999 seconds

• Setting resolution: 1 second (Note that about 0.2 second will be added to set time to prevent erroneous operation.)

For example, when an alarm ON delay is set to 1 second,

alarm output is generated if alarm status continues for more than 1 second after the input value exceeds the alarm setpoint. Further, when an alarm OFF delay is set to 2 seconds, alarm output is released if normal condition continues for more than 2 seconds after the input value has returned to normal from the alarm status.

5.3.5 Direction of Relay Action

Set the direction of relay energizing in alarm-1 normal

condition and alarm-2 normal condition by selecting from among NRM DEENERGIZED (de-energized under normal condition) and NRM ENERGIZED (energized under normal condition) in [E15: RL1 ACTION] and [E16: RL2 ACTION] and set them.

6. DESCRIPTION OF ALARM ACTIONS

This chapter describes examples of alarm actions under the following conditions.

Item Alarm-1 Alarm-2

Direction of alarm action

Alarm setting E03: SET POINT1 80% E04 : SET POINT2 15% Hysteresis E09: HYSTERESIS1 10% E10 : HYSTERESIS2 5% Alarm ON delay E11: ON DELAY1 1 sec. E12 : ON DELAY2 3 sec. Alarm OFF delay E13: OFF DELAY1 2 sec. E14 : OFF DELAY2 4 sec. Description of alarm

actions

Alarm conditions established

[%]

100

[1]

1 sec.

Alarm-1 ON delay

Alarm-2 hysteresis (5%)

20 15

Alarm-1 action

Normal

Alarm-2 action

Parameter Setpoint Parameter Setpoint E05: ALM1 ACTION High-limit

The alarm sounds if the condition where the input value is 80% or more of high-limit alarm continues for more than 1 second. After the alarm sounds, when the condition where input value is less than 70%of the high-limit alarm continues for more than 2 seconds, the status returns to normal

the alarm conditions are established at alarm-1.

[2]: Normal status does not continue for more than 2 seconds after

the normal conditions are established at alarm-1.

[3]: Alarm status does not continue for more than 3 seconds after

the alarm conditions are established at alarm-2.

[4]: Normal status does not continue for more than 4 seconds after

High-limit alarm ON

Normal conditions established

[2]

2 sec.

Alarm-1 OFF delay

Alarm-2 setpoint (15%)

Alarm

Normal Normal

the normal conditions are established at alarm-2.

High-limit alarm OFF

Alarm-1 setpoint (80%)

Alarm-1 hysteresis (10%)

Alarm conditions established

[3]

E06: ALM2 ACTION Low-limit

alarm

The alarm sounds if the condition where the input value is 15% or less of low-limit alarm continues for more than 3 seconds. After the alarm sounds, when the condition where input value is more than 20% of the low-limit alarm continues for more than 4 seconds, the status returns to normal.

Low-limit alarm ON

Normal conditions

3 sec.

established

[4]

Normal

Alarm

Alarm-2 ON delay

alarm

Low-limit alarm OFF

Alarm-2 OFF delay

4 sec.

Elapsed time

1 sec.

7. LIST OF PARAMETERS

Parameter Display Item

MODEL Model TAG NO Tag no. SELF CHK Self-check result

A DISPLAY1 Display1

A01 INPUT1 Input value 1 A05 OUTPUT1 Output value 1 A06 OUTPUT2 Output value 2 A07 ALM1 STATUS Alarm-1 status A08 ALM2 STATUS Alarm-2 status A54 STATUS Status A56 REV NO Rev. no. A58 MENU REV MENU REV A60 SELF CHK Self-check result

B DISPLAY2 Display2

B01 INPUT1 Input value 1 B05 OUTPUT1 Output value 1 B06 OUTPUT2 Output value 2 B07 ALM1 STATUS Alarm-1 status B08 ALM2 STATUS Alarm-2 status B60 SELF CHK Self-check result

D SET (I/O) Setting (I/O)

D01 TAG NO.1 Tag no. 1 D02 TAG NO.2 Tag no. 2 D03 COMMENT1 Comment 1 D04 COMMENT2 Comment 2 D06 RESIST Total resistance D22 INPUT1 L_RNG Input low range D23 INPUT1 H_RNG Input high range D38 OUT1 DR Direction of output-1 action D39 OUT2 DR Direction of output-1 action D60 SELF CHK Self-check result

E SET(ALM) Setting (alarm output)

E03 SET POINT1 Alarm-1 setting E04 SET POINT2 Alarm-2 setting E05 ALM1 ACTION Direction of alarm-1 action E06 ALM2 ACTION Direction of alarm-2 action E09 HYSTERESIS1 Alarm-1 hysteresis E10 HYSTERESIS2 Alarm-2 hysteresis E11 ON DELAY1 Alarm-1 ON delay setting E12 ON DELAY2 Alarm-2 ON delay setting E13 OFF DELAY1 Alarm-1 OFF delay setting E14 OFF DELAY2 Alarm-2 OFF delay setting E15 RL1 ACTION Direction of alarm-1 relay action E16 RL2 ACTION Direction of alarm-1 relay action E60 SELF CHK Self-check result

F SET(COM) Setting (communication)

F01 PROTOCOL Communication protocol F02 ADDRESS Address F03 BAUD RATE Baud rate F04 PARITY Parity F05 DATA LEN Data Length F06 STOP BIT Stop bit F07 INPUT DEC PT Decimal point position of input F60 SELF CHK Self-check result

P ADJUST Adjustment

P10 ZERO ADJ1 Zero adjustment of input P11 SPAN ADJ1 Span adjustment of input P12 OUT1 0% 0% adjustment of output-1 P13 OUT1 100% 100% adjustment of output-1 P14 OUT2 0% 0% adjustment of output-2 P15 OUT2 100% 100% adjustment of output-2 P60 SELF CHK Self-check result

Q TEST Test

Q02 OUT1 TEST Forced output-1 Q03 OUT2 TEST Forced output-2 Q04 ALM1 TEST Forced output (alarm) Q05 ALM2 TEST Forced output (alarm) Q60 SELF CHK Self-check result *1 The Status is displayed for service personnel to see history

records.

*2 There are items not displayed depending on what output-2

is specied.

IM 77J01S07-01E 5th Edition Mar. 02, 2012-00

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8. MAINTENANCE

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 specied performance.

8.1 Calibration Apparatus

● 6-dial decade resistance boxes × 2 units (Yokogawa Meters & Instruments 279301 or equivalent)

● A digital multimeter (DMM) (Yokogawa 7561 or equivalent)

● A calibrator (Yokogawa Meters & Instruments CA150 or equivalent)

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

● Setting tool for adjustment (Refer to “4.2 Connector for

Communication” in this manual.)

8.2 Calibration Procedure

1. Connect the instruments as shown below. First adjust the output-1 signal and then the output-2 signal.

100%

2. Operate the variable resistor according to the specications

3. Check to see the corresponding output voltages are 0, 25, 50,

For alarm output, check the relay action by the alarm indicator lamp or resistance of output terminals.

● Use the setting tool (VJ77 Parameter Setting Tool or JHT200

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

6 dial variable resistor

Power supply

L+

1110 8

N–

GND

3 2

789

1011

R: For current output using 250 Ω

Output-2

DMM

–

Alarm-1

ALM1

COM

Alarm-2

ALM2

COM

Output-1

DMM

–

precision resistor

Calibrator

–

Calibrator

–

(total resistance, 0%, 100% resistance) of the potentiometer to be connected. Keeping total resistance constant, change each value of R1 and R2 to apply the resistance equivalent to 0, 25, 50, 75, and 100% of the input range to the converter.

75, and 100% respectively and within the specied accuracy rating. (“R” is used for current output.)

Handy Terminal) to adjust the input/output signals.

SAFETY AND EMC STANDARDS

CAUTION

This instrument is for Measurement Category I (CAT.I). Do not use it for measurements in locations falling under Measurement Categories II, III, and IV.

Internal Wiring

Entrance Cable

III

Outlet

Measurement

Description Remarks

Yokogawa VJS7 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual