JUXTA M Series Computing Units

M Series computing units include a type that supports user-specified programs, and types that support analog memory, peak/bottom holders, moving averages, dead times, temperature/pressure compensation, and a wide range of other applications.

The M Series, plug-in style and microprocessor based 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. Three models of MXD, MXS, MXT covering 23 mathematical functions allow wide applications. Various parameters such as input range and computation programs can be set and modified using a Handy Terminal (JHT200) or PC (VJ77). Using industry standard pin configurations, anyone can upgrade to JUXTA performance by just plugging one in.

  • 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 (withVJ77 PC-based parameters setting tool) or using our Handy Terminal (JHT200).
  • Equipped with two isolated current outputs (MXS)
  • 3 inputs for one computing unit (MXT) Temperature/pressure compensation for 3 inputs per one computing unit is realized by abundant variable parameters.
  • Analog output signal and integrated pulse signal are available (MXD).
  • Universal range of input and output signals
  • Plug-in type construction Easy for instrumentation planning, field wiring and maintenance because of its flexible insertion/extraction and ability to be pre-wired.
  • Power supply voltage is either 12 to 48 V DC or 85 to 264 V AC.
Construction Plug-in type (Main unit with Socket)
Mounting Method: Wall mounting or DIN-rail mounting
Connection Method: M3.5 screw terminal
External Dimensions: 85×50×132 mm (H×W×D)
Power Requirements: 12 to 48 V DC or 85 to 264 V AC

 

Computing Units

Model Product Name Input Type Output Type Descriptions
MXD-A Free program DC Voltage or Current (1 point, free range) DC Voltage or Current (Free range) Setting of computing parameter, input range and zero/span adjustment, input/output value monitoring, etc. can be made through Handy Terminal (JHT200) or PC (with VJ77).
MXD-L Analog memory DC Voltage or Current (1 point, free range) and contact (1 point)
MXD-M Peak holder
MXD-N Bottom holder
MXD-P Program setter Contact (1 point)
MXD-Q Integrated pulse output DC Voltage or Current (1 point, free range) DC Voltage or Current (Free range) and integrated pulse
MXS-A Free program DC Voltage or Current (1 point, free range) DC Voltage or Current (Isolated 2 points, free range) Setting of computing parameter, input range and zero/span adjustment, input/output value monitoring, etc. can be made through Handy Terminal (JHT200) or PC (with VJ77).
MXS-B Moving average
MXS-C Dead time
MXS-D First-order lag
MXS-E First-order lead
MXS-F Velocity limiter
MXS-G Limiter
MXS-H Velocity computation
MXS-J Linearizer
MXS-K Ratio setter
MXT-A Free program DC Voltage or Current (3 points, free range) DC Voltage or Current (Free range) Setting of computing parameter, input range and zero/span adjustment, input/output value monitoring, etc. can be made through Handy Terminal (JHT200) or PC (with VJ77).
MXT-R Temperature / pressure compensation
MXT-S Adder/subtracter
MXT-T Multiplier/Divider
MXT-U Square root extractor
MXT-V High Selector
MXT-W Low Selector

【Support Information】List of RoHS

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

Overzicht:

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

Overzicht:

This describes a rainfall pulse integration that uses an M series computing unit MXT (XJJM.511) free program. The XJJM.511 hardware is a computing unit with 3 isolated inputs and 1 output. There is 1 analog input, 2 digital inputs, and 1 analog output. The rain gauge's unit rainfall pulses are integrated and sent to the analog output (e.g. 1–5 VDC). The output rainfall integral value is 0% for a count of 0, and 100% for a count of 100. When the rainfall integral value reaches 100%, 100% is output for 1 second, and then the integral value returns to 0%. The maximum value of the rain integration can be changed on the JHT200 or other device.

Overzicht:

This introduces use of a contact input multiplication/addition computing unit that employs a user program of the MXT computing unit (XJJM.507) on fluid mixture and other calculated measurement outputs from flow meters. The figure below shows examples of connecting various field instruments to an upstream system.

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