JUXTA VJ Series Computing Units

VJ Series computing units include a type that supports user-specified programs, and types that support moving averages, dead times, first-order lags/gains, constant velocity responses, limiters, and a wide range of other applications. They feature wide-range of power supply, field configurable capability and optional 2nd output. Alarm outputs or RS-485 communication are optional feature for model VJX7.

Compact size, plug-in style and microprocessor based 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. Various parameters such as input range and computation programs can be set and modified using a PC (VJ77) or Handy Terminal (JHT200).

  • Compact design for space saving. The external dimensions are 76 H × 29.5 W × 124.5 D (mm).
  • Universal Computing unit Free programmable type and fixed computation (Moving average, Dead time, 1st-order lag/lead, Linearizer, Ratio setting, etc.) type are available for almost every application.
  • Field configuration A field configuration of input range, computation program, etc. are possible from your PC (with VJ77 PC-based parameters setting tool) or using our Handy Terminal (JHT200).
  • Two isolated outputs, Second isolated current or voltage output is available as optional feature.
  • Communication function (VJX7) Optional MODBUS (RS-485) communication function can be obtained simultaneously with analog output signal from one VJ.
  • Two relay contact outputs (VJX7) Optional two relay contact outputs can be output simultaneously with analog output signal from one VJ unit.
  • Power supply voltage is either 100 to 240 VAC or 15 to 30 VDC.
  • Withstand voltage The standard withstand voltage for a unit of this size is 2000 VAC.
  • Three years warranty.
  • Compliance with international safety standards, CE, CSA and UL CE, UL and CSA marks are available for model VJX7. CE mark is available for models VJXS and VJ77. The above complied instruments are only for power supply voltage of 15 to 30 V DC.
Construction Compact plug-in type (Main unit with Socket)
Mounting Method: Wall, DIN rail, or dedicated VJ mounting base mountings
Connection Method: M3 screw terminal
External Dimension: Converters: 76×29.5×124.5 mm (H×W×D)
VJCE Base: 130×482.6×121 or 177×482.6×121 mm (H×W×D)

 

VJ Mounting Base

Model Product Name Descriptions
VJCE VJ Mounting Base The multiple mounting base for VJ Series, mixed and housed up to 16 converters, JIS/EIA standards rack-mounting dimensions.

 

Computing Units

Model Product Name Input Type Output Type Descriptions
VJX7-A1 Free program DC Voltage or DC Current DC Voltage or DC Current 1 output type
VJX7-A2 2 outputs type (Note 1)
VJX7-B1 Moving average computation 1 output type
VJX7-B2 2 outputs type (Note 1)
VJX7-C1 Dead time computation 1 output type
VJX7-C2 2 outputs type (Note 1)
VJX7-D1 First-order lag computation 1 output type
VJX7-D2 2 outputs type (Note 1)
VJX7-E1 First-order lead computation 1 output type
VJX7-E2 2 outputs type (Note 1)
VJX7-F1 Uniform-speed response (Velocity limiter) 1 output type
VJX7-F2 2 outputs type (Note 1)
VJX7-G1 Limiter 1 output type
VJX7-G2 2 outputs type (Note 1)
VJX7-H1 Velocity computation 1 output type
VJX7-H2 2 outputs type (Note 1)
VJX7-J1 Linearizer 1 output type
VJX7-J2 2 outputs type (Note 1)
VJX7-K1 Ratio setting 1 output type
VJX7-K2 2 outputs type (Note 1)
VJXS-A1 Free program DC Voltage or DC Current DC Voltage or DC Current 1 output type
VJXS-A2 2 outputs type (Note 2)
VJXS-B1 Moving average computation 1 output type
VJXS-B2 2 outputs type (Note 2)
VJXS-C1 Dead time computation 1 output type
VJXS-C2 2 outputs type (Note 2)
VJXS-D1 First-order lag computation 1 output type
VJXS-D2 2 outputs type (Note 2)
VJXS-E1 First-order lead computation 1 output type
VJXS-E2 2 outputs type (Note 2)
VJXS-F1 Uniform-speed response (Velocity limiter) 1 output type
VJXS-F2 2 outputs type (Note 2)
VJXS-G1 Limiter 1 output type
VJXS-G2 2 outputs type (Note 2)
VJXS-H1 Velocity computation 1 output type
VJXS-H2 2 outputs type (Note 2)
VJXS-J1 Linearizer 1 output type
VJXS-J2 2 outputs type (Note 2)
VJXS-K1 Ratio setting 1 output type
VJXS-K2 2 outputs type (Note 2)

【Support Information】List of RoHS

This is a list of recorder and controller products that support the RoHS (2011/65/EU) directive.

Overview:

Weir-type flow volume calculation using the M series Free Programmable MXS (or VJXS) Computing Units

Overview:

DAQWORX Data Acquisition Software Suite helps the administrative department collect and monitor data on each section of the factory, including data on the usage of chemicals, gas, and electricity.

The black knob on the front panel is the screw that secures the main unit. Turn it counterclockwise to loosen, then remove the unit.
As our lightning arresters are not explosion proof, they cannot be used in the configuration of instruments you described.
Yes. Wire it without using the included resistor.
Yes. Wire it without using the included resistor.
We have pulse repeaters such as the VJP1, and VJP8.
Because the RS-485 communication on output 2 is reserved for I/O or error status monitoring, it cannot be used to write parameters.
JUXTA VJ series is not a CCC standard scope. Some models of the VJ series have acquired GB standard and can be used in China. Please contact us for applicable models. ...
You can do this with a limiter or broken-line approximation function. You can use the following for this: M series plug-in type signal conditioners, VJ series compact plug-in type units, or F/W series front panel terminal type computing units. The br...
You can do this with a limiter or broken-line approximation function. You can use the following for this: M series plug-in type signal conditioners, VJ series compact plug-in type units, or F/W series front panel terminal type computing units. The br...
As the orientation affects heat dissemination, it cannot be horizontal.
As the orientation affects heat dissemination, it cannot be horizontal.
It is shipped with factory default settings. Alarm types and values should be set by the user with a handy terminal or the VJ77 parameter setting tool.
Short with a 250 Ω resistor (rated power of 0.25 W or more). If you don't have a resistor, a simple short is fine.
Resistors come with isolators that have terminal block format current input specifications. Please attach it to the input terminals before use.
  Check the power supply wiring. Check whether the power supply voltage meets the specifications. Check the polarity of the input wiring. Check the pulse specifications of the other instrument. For voltage pulse, open collector, and non-v...
Yes. To satisfy the performance specifications, you should power the unit for 10–15 minutes.
Please provide information about PCB usage.
(ns-faq-juxta-11068-other)
PCBs were banned from manufacturing and imports in 1975. JUXTA was first released in 1987, therefore they should not include PCBs.
Check the power supply wiring.Check whether the power supply voltage meets the specifications.Check the polarity (+), (-) of the input wiring. Use a tester to measure the input terminal voltage.For current input specifications (applies to the VJ and ...
  Check the power supply wiring. Check whether the power supply voltage meets the specifications. Check the polarity of the input wiring. Check the pulse specifications of the other instruments. For voltage pulse, open collector, and non-...
  Check the power supply wiring. Check whether the power supply voltage meets the specifications. Check the polarity of the input wiring. Use a tester to measure the input terminal voltage. For current input specifications, confirm that t...
  Check the power supply wiring. Check whether the power supply voltage meets the specifications. Check the polarity of the input wiring. Measure the voltage between the input terminal (-) and COM. The normal range is 1–5 VDC. Measu...
  Check the power supply wiring. Check whether the power supply voltage meets the specifications. Confirm that the accessory RJC sensor is connected to the input terminal. Short the input terminals, then confirm that the output is equivale...
  Check the power supply wiring. Check whether the power supply voltage meets the specifications. For Pt100 input specifications, connect a 100 Ω resistance between input terminals A and B, short the B terminals, then confirm that the...
Using a first-order lag or moving average computing unit helps suppress noise. You can use the following for this: M series plug-in type signal conditioners, VJ series compact plug-in type units, or F/W series front panel terminal type computing unit...
A distributor for the V series (VJA1/H), and a distributor (DA7) and isolator (DC7) for the D series are available.
You specify it for current pulse input. The resistance you specify depends on the specifications of the transmitter (mainly the rated current of the open collector). The internal load resistances are 200 Ω, 500 Ω, and 1 kΩ, and 0.5 ...
The resistance is 250 Ω (4–20 mADC). However some computing units also have 100 Ω input.
For example, if the specification of the open collector on the output side is 30 V/30 mA, use an internal load resistance of 1 kΩ (with a 24 V transmitter power supply). This results in a 0/24 mA current pulse.
IPTS-68: This is an international standard from 1968 where R100/R0=1.3850 that was used by the JIS from 1989 to 1997, but currently it is not in use. ITS90: An international standard from 1990 where R100/R0=1.3851, and used by the JIS from 1997 to th...
The input impedance of typical voltage input type instruments is 1 MΩ. By contrast, the allowable load impedance for voltage output is 2 kΩ or more, therefore the maximum number of units that can be connected is 500.
What are the merits of plugin conditioners?
(ns-faq-juxta-11007-select)
They have the following advantages: Because you can separate the conditioner from the socket, panel work can proceed even without the conditioner. You can remove or replace the conditioner simply by plugging a new one in, so maintenance is easy. No n...
How do I change settings?
(ns-faq-juxta-11006-setting)
Using the following settings tool, you can change the settings listed in the user's manual that came with the conditioner. Handy Terminals JHT-100 and JHT-200 BRAIN terminal BT200 (requires cable, sold separately) VJ77 Parameter Setting Tool...
F and W series: dedicated 3-pin cable D series: dedicated 5-pin cable VJ, J, and M series computation unit: 5-pin cable + modular conversion (E9786WH, sold separately).
If it is a model that allows range changes, it is possible just like from a JHT200. However, the type of cable is different from the one that comes standard, so you will need to purchase another cable. 3-pin cable: model F9182ED 5-pin cable: model F9...
Can I change the range on the MQ0?
(ns-faq-juxta-11004-spec)
No, you can't change the range after purchase. The compact VJQ7 model does allow you to change ranges, but this requires a setting tool that is sold separately.
Can I change the range on the VJT6?
(ns-faq-juxta-11005-spec)
No, you can't change the range after purchase. The compact VJU7 model does allow you to change ranges, but this requires a setting tool that is sold separately.
The input impedance of typical current input type instruments is 250 MΩ. By contrast, the allowable load impedance for current output is 750 kΩ or more, therefore the maximum number of units that can be connected is 3.
On the M series you can select 50, 100, or 200 ms. On the F, W, and VJ series you can select 100 or 200 ms. (The VJXS can support 50 ms.)
The F series has 30 steps. The W series has 40 steps. The M/VJ series has 59 steps.
It is T9093FL. Note that the VJ socket is built with holes for screws that prevent falling off, therefore an Omron socket cannot be used.
It is T9093FL. Note that the VJ socket is built with holes for screws that prevent falling off, therefore an Omron socket cannot be used.
It is with plug-in types. It is also sold separately.
Can I change the burnout operation?
(ns-faq-juxta-11001-spec)
This is possible if it is a microprocessor type converter. You will need a handy terminal to make the change. (VJR6, VJT6, VJS2, MR6, MT6, MS2, and others cannot be changed.)
What happens on a "burnout OFF"?
(ns-faq-juxta-11024-spec)
When input is interrupted it reaches ±OVER, but which of these is uncertain.
What does response speed **ms(10-90%) mean?
(ns-faq-juxta-11019-other)
It means the time until the output reaches 63% when input is applied in 10 Ω 90% steps.
A 90% response time is equivalent to 2.3 times the duration of a 63% response time.
What does "time constant" mean?
(ns-faq-juxta-11021-term)
In the case of conditioners, time constant reflects the response speed. In terms of a transfer function, it is expressed as OUT=INΩ(1-e EXP(-t/T)). OUT: output, IN: input, e: natural log, T: time constant, t: elapsed time When the elapsed time...
What is the output on burnout?
(ns-faq-juxta-11023-spec)
When UP, 106% of the output range or more; when DOWN, -6% or less.
The total resistance ≥ zero side resistance + span resistance.
The open collector needs a power supply. Use one within the maximum allowable load. ...

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