YOKOGAWA JUXTA VJP8 Series User manual

User's
Manual
1
Thank you for purchasing the JUXTA Signal Conditioner.
Please read through this manual before use for correct handling.
2-9-32, Naka-cho Musashino-shi, Tokyo 180-8750 Japan
Phone: [phone] Facsimile: [phone]
http://www.yokogawa.com/ns/juxta/im/
You can download the latest manuals from the following website:
IM 77J01P08-01E
5th Edition Aug. 2020 (YK)
CAUTIONARY NOTES FOR SAFE USE OF THE
PRODUCT
This User’s Manual should be carefully read before installing and
operating the product. Please keep this User’s Manual for future
reference.
Doc. Name Doc. Number
Model VJP8 Pulse Rate Converter (User’s Manual) IM 77J01P08-01E
(This manual)
Model VJP8 Pulse Rate Converter (General Specications) GS 77J01P08-01E
User’s manuals in the above table are essential parts of the
product; keep it in a safe place for future reference.
This manual is intended for the following personnel;
• Engineers responsible for installation, wiring, and maintenance
of the equipment.
• Personnel responsible for normal daily operation of the
equipment.
The following symbol is used on the product and in this manual to
ensure safe usage.
WARNING
Calls attention to actions or conditions that could
cause serious or fatal injury to the user, and indicates
precautions that should be taken to prevent such
occurrences.
CAUTION
Calls attention to actions or conditions that could
cause injury to the user or damage to the instrument
or property and indicates precautions that should be
taken to prevent such occurrences.
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:
• VJP8: 1 unit
• Tag number label: 1 sheet
• Range label: 1 sheet
• Shunt resistor (when optional code “/R” is specied): 1
piece
• User's Manual (this manual): 1 copy
GENERAL
The VJP8 is a plug-in pulse rate converter that receives contact,
voltage or current pulse from a eld, and converts it into isolated
transistor-contact pulse or contactless AC switch pulse at a preset
pulse rate. The VJP8 can also be used as a pulse signal repeater
by setting the pulse rate and pulse width type.
• Either pulse output or communication function (RS-485) is
selectable as Output-2.
• Various parameters can be set and modied using a PC
(VJ77 (sold separately)) or Handy Terminal (JHT200 (sold
separately)) and the like.
MODEL AND SUFFIX CODES
Model Su󰀩x codes Description
VJP8 -0 □□-□□□0/□ Pulse Rate Converter
(Multi-function)
-0 Always -0
Output
conguration
11 output
22 outputs
Power supply 6 100-240 V AC/DC (*1)
715-30V DC (*2)
Transmitter Power
Supply
-1 12V DC±10%
-2 24V DC±10%
Output-1 1 Open collector
3Contactless AC switch
Output-2 1 Open collector
3Contactless AC switch
PCommunication (RS-485)
NNone
0Always 0
Options Blank: With socket
/SN Without socket
/R With 200 Ω shunt resistor
(Specify when current pulse input.)
*1 Operating range: 85-264 V
*2 Operating range: 12-36 V
Model VJP8
Pulse Rate Converter
(Multi-function)
(Isolated Single-output and Isolated Dual-
output Types)

2IM 77J01P08-01E 5th Edition
1. MOUNTING METHOD
CAUTION
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.
29.5 or more
22±0.2 2-M4 or
2-ø4.5 or more
Mounting Dimensions
59±0.3
Unit: mm
Main unit-fixing
screw
Socket
Main unit
Threaded hole for
fixing the main unit
Mounting
screws
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
DIN rail
DIN rail
(Rear of socket)
Slide look
DIN rail
Fit into here
Push
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 AND ENVIRONMENTAL
CONDITIONS
• 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,
outdoors.
• 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.
• Use indoors at an altitude of 2000 m or less.
• Operating temperature/humidity range: 0 to 50ºC/5 to 90%RH
(no condensation)
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.
CAUTION
When power of VJP8 is turned on/o󰀨, one pulse may
be counted by the pulse input device which connects
to the VJP8.
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 mm2or thicker for signal cables, and that of 1.25 mm2or
thicker for power cables.
1011
3 2 1
4
56
789
Power supply
1110 8
L+ N– GND
1
3
4
1
3
4
3
4
+
–
Input
Transmitter
R: Shunt resistor
R
Transmitter PS+
+
−
PS+
+
−
+
−
Transmitter
5
2
Pulse output
Output-2
B+
A–
COM
5
2
6
RS-485
communication
+
–
9
7
Pulse output
Output-1
When receiving voltage
pulse by running a
transmitter on an
internal power supply
When receiving current
pulse by running a
transmitter on an
internal power supply
When receiving
non-voltage contact
signal or voltage pulse
CAUTION
●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.
●Make sure to earth ground the ground terminal
through minimum resistance. 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.

3IM 77J01P08-01E 5th Edition
●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.
●For 15-30 V DC (±20%) power supply, as a safety
measure, always install a circuit breaker (an IEC
60947-compatible product, 1 A, 30 V DC) in an easily
accessible location near the instrument. Moreover,
provide indication that the switch is a device for
turning o󰀨 the power to the instrument.
4. DESCRIPTION OF FRONT PANEL
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.
Communications connector
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
Modular jack conversion
adapter (E9786WH)
[Provided with VJ77]
JHT200
Handy Terminal
JUXTA communication cable
with 5-pin connector (F9182EE)
[Provided with VJ77 and JHT200]
Dedicated adapter (E9789HA)
[Provided with VJ77]
PC which is installed
with the VJ77
Dedicated cable (E9786WK)
[Provided with 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.
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 77J50H01-01EN). Parameters are indicated
inside the [ ].
5.1 Settings Related to Inputs and Outputs
5.1.1 Input Display Unit
The input display unit is used for referring the input signal.
Select and set "Hz" or "kHz" in [D10: UNIT].
5.1.2 Pulse Rate
Set the pulse rate within the numerically specied range in
[D41: PULSE RATE].
Setting range: 0.0001 to 2.0000(settable up to 4 decimal
places)
When the pulse width type is set to
“THROUGH” (no change), e󰀨ective range is
0.0001 to 1.0000.
5.1.3 Pulse Width Type
Select and set “THROUGH” or “ON PULSE” in [D42: PULSE
TYPE].
THROUGH: Outputs ON-state pulse time of frequency as
it is.
MANUAL Outputs ON-state pulse time after chang ing it
to the set value.
When the instrument is used as a pulse
signal repeater, set the pulse width type to
“THROUGH”, and the pulse rate to “1.0000”.
5.1.4 Pulse Width Time
The pulse width time is set when the pulse width type is set to
"ON PULSE."
Select and set "12.5µs", "50µs", "100µs", "12.5ms", "30ms",
"50ms", or "100ms" in [D43: PULSE WIDTH].
5.1.5 Input Filter
When the chattering noise is generated in input, the input lter
is used to restrain the inuence.
Select and set "ON" in [D50: INPUT FILTER], then the input
lter for time constant of about 10ms will be connected.
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
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 (setting of D register
[D0003]) can be set.
Select and set among 0 to 5 digits in [F07: INPUT DEC PT].

4IM 77J01P08-01E 5th Edition
6. 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
A31 COUNTER1 Integrating counter 1
A32 COUNTER2 Integrating counter 2
A33 COUNTER3 Integrating counter 3
A34 COUNTER4 Integrating counter 4
A54 STATUS Status *1
A56 REV NO Rev. no.
A58 MENU REV MENU REV
A60 SELF CHK Self-check result
B DISPLAY2 Display2
B01 INPUT1 Input value 1
B31 COUNTER1 Integrating counter 1
B32 COUNTER2 Integrating counter 2
B33 COUNTER3 Integrating counter 3
B34 COUNTER4 Integrating counter 4
B60 SELF CHK Self-check result
D SET (I/O) Setting (I/O) *2
D01 TAG NO.1 Tag no. 1
D02 TAG NO.2 Tag no. 2
D03 COMMENT1 Comment 1
D04 COMMENT2 Comment 2
D10 UNIT Input display unit
D41 PULSE RATE Pulse rate
D42 PULSE TYPE Pulse width type
D43 PULSE WIDTH Pulse width time
D50 INPUT FILTER Input lter
D60 SELF CHK Self-check result
F SET(COM) Setting (communication) *2
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
P60 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.
7. 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.
7.1 Calibration Apparatus
• A calibrator (YOKOGAWA CA150 or equivalent)
7.2 Calibration Procedure
1. Connect the instruments as shown below. First adjust the
output-1 signal and then the output-2 signal.
1011
3 2 1
4
56
789
Power supply
1110 8
L+N–GND
3
4
+
–
Input
Calibrator
Calibrator
2
5
Output-2
+
–
Calibrator
7
9
Output-1
+
–
2. Produce a rectangular pulse of any frequency from the
calibrator to measure the value using a calibrator, then check
that the frequency (input frequency x set rate) is output.

5IM 77J01P08-01E 5th Edition
8. SAFETY AND EMC STANDARDS
The following will be acquired.
Safety:
CAN/CSA-C22.2 No.61010-1 (CSA)
UL61010-1 (UL)
Overvoltage category: I
Pollution degree: 2
Measurement category: O (other)
Rated power voltage: 15-30 V DC (±10%) 3.7 W
Rated voltage (Input signal) : 50 V DC
Rated voltage (Communication output signal) : 5 V DC
Rated voltage (Open collector output signal) : 30 V DC
200 mA
Rated transient overvoltage: 1500 V (*)
* This is a reference safety standard value for the
measurement Category O. This value is not necessarily
a guarantee of instrument performance.
CAUTION
This instrument is for Measurement Category O
(other). Do not use it for measurements in locations
falling under Measurement Categories II, III, and IV.
Internal Wiring
Outlet
Entrance
Cable
III T
O
II
IV
Measurement
category
Description Remarks
O (other) For measurements
performed on circuits not
directly connected to MAINS.
II CAT.II For measurements
performed on circuits directly
connected to the low-voltage
installation.
Appliances,
portable
equipments,
etc.
III CAT.III For measurements
performed in the building
installation.
Distribution
board, circuit
breaker, etc.
IV CAT.IV For measurements
performed at the source of
the low-voltage installation.
Overhead
wire, cable
systems, etc.
EMC standards:
• RCM:
EN 55011 Class A, Group 1
• KC:
Electromagnetic wave interference prevention standard,
electromagnetic wave protection standard
CAUTION
Caution to comply with EMC standards: When
operating this instrument by external power supply,
use an independent power unit S to the respective
standards. Be sure to use the lightning arrester to
comply EMC standards.
Note: When "3" (Contactless AC switch) is specied for the
Output 1 signal code or Output 2 signal code, the conformity
to the safety and EMC standards is excluded.
9. TRANSPORT AND STORAGE CONDITIONS
• Temperature: -25 to 70°C
• Temperature change rate: 20°C per hour or less
• Humidity: 5 to 95%RH (no condensation)
CAUTION
Keep this product in a conductive bag when plugged
out, during transport or storage.

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