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FAQs

FAQ for JUXTA Series

JUXTA SeriesSignal Conditioner

  • With the UZ007 control signal conditioner, if the switching circuit drive power is OFF, what happens to the switching operation?

    It holds the switching side immediately before the power went OFF.

    Publishd:
    Jan, 2018
    ID:
    w0011070
    Category:
    Specification
  • How much heat does the D series nest produce?

    The nest itself has no electrical circuitry, therefore it produces no heat. The total value is therefore the sum of the calorific values of all cards inserted into the nest.

    Publishd:
    Jan, 2018
    ID:
    w0011071
    Category:
    Specification
  • Terminal arrangement when updating the MA1W.

    Not necessarily. The socket itself can be reused, but the terminal arrangement may differ depending on the specifications. Check the switch on the back of the MA1W to determine whether power is supplied to the transmitter. If the switch for supply of power to the transmitter is ON, use the MA5D-12x....

    Publishd:
    Nov, 2017
    ID:
    w0011069
    Category:
    Specification
  • Are PCBs used in the JUXTA?

    PCBs were banned from manufacturing and imports in 1975. JUXTA was first released in 1987, therefore they should not include PCBs.

    Publishd:
    Sep, 2017
    ID:
    w0011068
    Category:
    Other
  • Wants to adjust the thermocouple input card (DT5)

    This type is adjusted by using the VJ77 or Handy Terminal. Connecting it will require an extension card (DXT) or communication card (DSC2).

    Publishd:
    Aug, 2016
    ID:
    w0011054
    Category:
    Setting
  • No output with an isolator

    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 the accessory resistor is connected to the input termina...

    Publishd:
    Aug, 2016
    ID:
    w0011055
    Category:
    Wiring/Connection/Communciation
  • No output with a distributor

    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. Measure the voltage between the input terminal (+) and COM....

    Publishd:
    Aug, 2016
    ID:
    w0011056
    Category:
    Wiring/Connection/Communciation
  • No output with a thermocouple temperature converter

    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 equivalent to the terminal temperature. If the output signal...

    Publishd:
    Aug, 2016
    ID:
    w0011057
    Category:
    Wiring/Connection/Communciation
  • No output with an RTD temperature converter

    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 output is equivalent to 0°C. If the output signa...

    Publishd:
    Aug, 2016
    ID:
    w0011058
    Category:
    Wiring/Connection/Communciation
  • No output with a pulse signal repeater and pulse rate converter

    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-voltage contact, check whether there is an external r...

    Publishd:
    Aug, 2016
    ID:
    w0011059
    Category:
    Wiring/Connection/Communciation
  • No output with an analog/pulse converter

    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 M series), confirm that the accessory r...

    Publishd:
    Aug, 2016
    ID:
    w0011060
    Category:
    Wiring/Connection/Communciation
  • No output with a pulse/analog converter

    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-voltage contact, check whether there is an external resi...

    Publishd:
    Aug, 2016
    ID:
    w0011061
    Category:
    Wiring/Connection/Communciation
  • Unable to change the input type with a digital alarm setting device (MVHK, MVRK, and MVTK)

    Check whether the key lock is engaged. If LOC = 1 or 2, set LOC = 0 with the SET/ENTER key, then enter setup parameters while LOC = -1.

    Publishd:
    Aug, 2016
    ID:
    w0011062
    Category:
    Setting
  • Wants to use the VJ77 on a PC without an RS232C port

    It hasn't been officially validated, but some have made it work with the BUFFALO BSUSRC0605BS RS232C/USB adapter cable.

    Publishd:
    Aug, 2016
    ID:
    w0011063
    Category:
    Specification
  • Unable to determine the gain and bias used for the MXT-R temperature/pressure compensation formula

    Usually these are in the orifice specifications. Depending on the product, it may be listed with the normal operating pressure and temperature.

    Publishd:
    Aug, 2016
    ID:
    w0011064
    Category:
    Specification
  • Use of a resistor that came with an isolator

    Resistors come with isolators that have terminal block format current input specifications. Please attach it to the input terminals before use.

    Publishd:
    Aug, 2016
    ID:
    w0011065
    Category:
    Specification
  • Signal conditioner warm up time

    Yes. To satisfy the performance specifications, you should power the unit for 10–15 minutes.

    Publishd:
    Aug, 2016
    ID:
    w0011066
    Category:
    Specification
  • Terminal processing method with a 2 output type signal conditioner when not using a current output terminal

    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.

    Publishd:
    Dec, 2015
    ID:
    w0011052
    Category:
    Wiring/Connection/Communciation
  • Units that come with the X019 mounting board

    An air supply unit and power distributor come with it. You'll need to purchase a power supply unit (FPSU) separately.

    Publishd:
    Dec, 2015
    ID:
    w0011053
    Category:
    Model selection
  • I want to unplug the main unit from the socket (VJ series)

    The black knob on the front panel is the screw that secures the main unit. Turn it counterclockwise to loosen, then remove the unit.

    Publishd:
    Jul, 2015
    ID:
    w0011047
    Category:
    Wiring/Connection/Communciation
  • I want to reverse the output on the MH5.

    Yes, with a handy terminal or VJ77. Under D:SET, change D49:OUT1DR = DIRECT to REVERSE.

    Publishd:
    Jul, 2015
    ID:
    w0011048
    Category:
    Setting
  • Wants to use an isolator with a 4-20 mA current input specification with 1-5 VDC.

    Yes. Wire it without using the included resistor.

    Publishd:
    Jul, 2015
    ID:
    w0011049
    Category:
    Wiring/Connection/Communciation
  • Converter that converts voltage pulse to a non-voltage contact

    We have pulse repeaters such as the VJP1, and VJP8.

    Publishd:
    Jul, 2015
    ID:
    w0011050
    Category:
    Model selection
  • Shipping the VJ series alarm setter with preset alarm types and values

    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.

    Publishd:
    Jul, 2015
    ID:
    w0011051
    Category:
    Specification
  • Ability to change the MVHK, MVRK, and MVTK input ranges

    Yes, with front panel keys.

    Publishd:
    May, 2015
    ID:
    w0011042
    Category:
    Specification
  • Connecting a PC to the computing unit

    Use the dedicated cable that came with the VJ77 and connect it to the dedicated port on the front panel of the computing unit.

    Publishd:
    May, 2015
    ID:
    w0011043
    Category:
    Wiring/Connection/Communciation
  • Replacing MA1 style A with style B

    Yes. We have improved functions such as raising the withstand voltage, adding a power supply indicator, and reducing the power consumption.

    Publishd:
    May, 2015
    ID:
    w0011044
    Category:
    Specification
  • Support for the RoHS directive

    Please see the document below. You can confirm the compliance status of recorders and controllers with the RoHS directive. RoHS directive compliance status

    Publishd:
    Jul, 2014
    ID:
    w0000046
    Category:
    Other
  • Substitutes for discontinued models

    Please see the following page for recommended replacements for discontinued models. Information on discontinued products and recommended substitute models

    Publishd:
    Jul, 2014
    ID:
    w0003053
    Category:
    Specification
  • Burnout change

    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.)

    Publishd:
    Jul, 2014
    ID:
    w0011001
    Category:
    Specification
  • Connecting a conditioner that allows range changes to the handy terminal's terminals (JHT200)

    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).

    Publishd:
    Jul, 2014
    ID:
    w0011002
    Category:
    Setting
  • Changing settings from a BT200 (BRAIN terminal)

    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 F9182EE Modular conversion: model E9786WH

    Publishd:
    Jul, 2014
    ID:
    w0011003
    Category:
    Specification
  • Changing MQ0 ranges

    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.

    Publishd:
    Jul, 2014
    ID:
    w0011004
    Category:
    Specification
  • Changing VJT6 ranges

    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.

    Publishd:
    Jul, 2014
    ID:
    w0011005
    Category:
    Specification
  • Changing settings

    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 Example setting  I/O range: can be set through numeric...

    Publishd:
    Jul, 2014
    ID:
    w0011006
    Category:
    Setting
  • Merits of plugin conditioners

    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 need to touch any wiring

    Publishd:
    Jul, 2014
    ID:
    w0011007
    Category:
    Model selection
  • Merits of conditioner nests

    These are generally used for connecting a DCS. The advantages are: 1 nest holds 16 units Allows checking while activated Removable card format One power supply for all units

    Publishd:
    Jul, 2014
    ID:
    w0011008
    Category:
    Model selection
  • Merits of front panel terminal type conditioners

    They have the following advantages: Enables rack, DIN rail, or wall-mounting Enables checking of signals through operating status and live wire status (assuming the person checking the signals has experience with that)

    Publishd:
    Jul, 2014
    ID:
    w0011009
    Category:
    Model selection
  • Current input resistance

    The resistance is 250 Ω (4?20 mADC). However some computing units also have 100 Ω input.

    Publishd:
    Jul, 2014
    ID:
    w0011010
    Category:
    Specification
  • Internal load resistance of pulse input

    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 W and 2 W are available based on the transmitter p...

    Publishd:
    Jul, 2014
    ID:
    w0011011
    Category:
    Specification
  • Determining internal load resistance

    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.

    Publishd:
    Jul, 2014
    ID:
    w0011012
    Category:
    Specification
  • Difference in Pt100 Ω standard

    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 the present. JPt100: A standard unique to Japan wh...

    Publishd:
    Jul, 2014
    ID:
    w0011013
    Category:
    Other
  • Number of instruments that can be connected to a voltage output terminal (1?5 VDC)

    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.

    Publishd:
    Jul, 2014
    ID:
    w0011014
    Category:
    Specification
  • Number of instruments that can be connected to a current output terminal (4?20 mADC)

    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.

    Publishd:
    Jul, 2014
    ID:
    w0011015
    Category:
    Specification
  • Frequency setting of analog pulse converters

    100 × 1000/10/H = 10000/3600 Hz = 2.778 Hz (4 significant digits).

    Publishd:
    Jul, 2014
    ID:
    w0011016
    Category:
    Specification
  • Error when connecting an open collector output conditioner with a counter or relay

    The open collector needs a power supply. Use one within the maximum allowable load.

    Publishd:
    Jul, 2014
    ID:
    w0011017
    Category:
    Specification
  • Temperature and pressure correction unit according to differences in detection methods

    Differential pressure: choose the MXT-R or WTXx-R computing unit. Vortex: choose the MXT-T or WXTx-T computing unit.

    Publishd:
    Jul, 2014
    ID:
    w0011018
    Category:
    Model selection
  • What is response speed?

    It means the time until the output reaches 63% when input is applied in 10 Ω 90% steps.

    Publishd:
    Jul, 2014
    ID:
    w0011019
    Category:
    Other
  • Comparison of response speeds

    A 90% response time is equivalent to 2.3 times the duration of a 63% response time.

    Publishd:
    Jul, 2014
    ID:
    w0011020
    Category:
    Other
  • Definition of time constant

    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 reaches the time constant, the e exponent becomes...

    Publishd:
    Jul, 2014
    ID:
    w0011021
    Category:
    Terminology
  • Meaning of total resistance on models with total resistance, zero, and span resistance specifications

    The total resistance ≥ zero side resistance + span resistance.

    Publishd:
    Jul, 2014
    ID:
    w0011022
    Category:
    Other
  • Output on burnout

    When UP, 106% of the output range or more; when DOWN, -6% or less.

    Publishd:
    Jul, 2014
    ID:
    w0011023
    Category:
    Specification
  • Meaning of burnout OFF

    When input is interrupted it reaches ±OVER, but which of these is uncertain.

    Publishd:
    Jul, 2014
    ID:
    w0011024
    Category:
    Specification
  • ASTEM correction capable models

    None support it completely, but if you can identify the fuel type you can use an MTX-A user program. When changing the type, change the correction curve.

    Publishd:
    Jul, 2014
    ID:
    w0011026
    Category:
    Model selection
  • Number of computation steps

    The F series has 30 steps. The W series has 40 steps. The M/VJ series has 59 steps.

    Publishd:
    Jul, 2014
    ID:
    w0011027
    Category:
    Specification
  • JUXTA series computation intervals

    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.)

    Publishd:
    Jul, 2014
    ID:
    w0011028
    Category:
    Specification
  • Model of the M series 8-pin terminal block

    It is A1653MR. (Please consult with your dealer at the time of purchase.)

    Publishd:
    Jul, 2014
    ID:
    w0011029
    Category:
    Model selection
  • Model of the M series 11-pin terminal block

    It is A1654MR. (Please consult with your dealer at the time of purchase.)

    Publishd:
    Jul, 2014
    ID:
    w0011030
    Category:
    Model selection
  • Model of the M series 15-pin terminal block

    It is A1681MR. (Please consult with your dealer at the time of purchase.)

    Publishd:
    Jul, 2014
    ID:
    w0011031
    Category:
    Model selection
  • Model of the VJ series terminal block

    The VJ socket is built with holes for screws that prevent falling off, therefore an Omron socket cannot be used.

    Publishd:
    Jul, 2014
    ID:
    w0011032
    Category:
    Model selection
  • Externally attached resistance for current input comes standard

    It is with plug-in types. It is also sold separately.

    Publishd:
    Jul, 2014
    ID:
    w0011033
    Category:
    Model selection
  • Conditioners supporting HART communication

    A distributor for the V series (VJA1/H), and a distributor (DA7) and isolator (DC7) for the D series are available.

    Publishd:
    Jul, 2014
    ID:
    w0011034
    Category:
    Model selection
  • Input signal noise suppression

    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 units.

    Publishd:
    Jul, 2014
    ID:
    w0011035
    Category:
    Specification
  • Instruments supporting upper/lower input signal limiting

    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 broken-line approximation function can also be cover...

    Publishd:
    Jul, 2014
    ID:
    w0011036
    Category:
    Model selection
  • Orientation of attachment of the VJ and M series

    As the orientation affects heat dissemination, it cannot be horizontal.

    Publishd:
    Jul, 2014
    ID:
    w0011037
    Category:
    Other
  • CCC standard support

    JUXTA does not support the CCC standard, but it can be used in China.

    Publishd:
    Jul, 2014
    ID:
    w0011038
    Category:
    Other
  • Guideline for adjusting the timeout time and acquisition interval set on GateCONTROL

    With the Ethernet gateway function for VJET and UT351/UT551, the serial communication timeout with devices connected downstream is about 4-5 seconds, therefore you should set the timeout time on GateCONTROL at about 5 seconds or perhaps more.

    Publishd:
    Jul, 2014
    ID:
    w0013014
    Category:
    Specification
  • VJ series RS-485 communication

    Because the RS-485 communication on output 2 is reserved for I/O or error status monitoring, it cannot be used to write parameters.

    Publishd:
    Apr, 2014
    ID:
    w0011040
    Category:
    Model selection
  • Restrictions on placement of lightning arresters

    As our lightning arresters are not explosion proof, they cannot be used in the configuration of instruments you described.

    Publishd:
    Apr, 2014
    ID:
    w0011041
    Category:
    Specification