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JUXTA D Series Signal Conditioners
Signal Conditioners

JUXTA D Series Signal Conditioners

The D Series is DCS-supported signal conditioners, consisting of modular type signal converters with versatile I/O specifications and housing nest. Our complete line of conditioners work well for a large or small scale systems and provide a simple platform for use and maintenance. Mounting nest conforms with JIS and EIA specifications.

HART communication

Details

  • Mixed mounting of Electronic and Pneumatic signal conditioners
    Mixed mounting of Electronic, Electronic-Pneumatic and Pneumatic-Electronic converters are available. Up to 16 converters can be mounted in one nest.
  • Relaying HART communication signals
    Bi-directional relay of HART communication signals is possible while the field devices and the DCS are isolated from each other.
  • BRAIN Communication function
    Equipped with communication functions, the conditioner allows such tasks as parameters setting, and monitoring to be done using a DCS (Yokogawa CENTUM-XL, µ-XL, etc.), PC (with VJ77 PC-based parameters setting tool).
  • Standard second output
    A second output terminal on the front panel is available as standard for output to external recorders, indicators, alarm units, etc.
  • Maintenance can be performed in the field without removing wiring or disturbing other loops.
  • Manual backup for control output (DME, DMP)
    Backup connector for model SPBD Standby Manual Station is equipped, allowing the converter to be maintained without interrupting the control output signals during operation.
  • Upper level communication
    By installing a DSC2 communication interface module, the D series signal conditioners can communicate with a PC or PLC.
Construction Nest-mounting type (up to 16 units of conditioners and mounting nest)
Mounting Method: Rack mounting (JIS/EIA specifications 19") or wall mounting
Connection Method: M4 screw terminal (for input/output, communication, power supply and grounding)
Connecting cable (Yokogawa model: KS2)
Air supply: Rc 3/8 (PT 3/8) female (2 points)
External Dimensions: 145×482.6×120 mm (H×W×D)
Power Requirements: 24 V DC±10%

Nests for mounting

Signal Conditioners

Model Product Name Input Type Output Type Descriptions
DA7 Distributor (with HART Communication) 4 to 20mA DC, from 2-wire type transmitter Output 1: 4 to 20mA DC Bi-directional relay of HART communication signals is possible while the field devices and DCS are isolated each other.
DC7 Output Isolator (with HART Communication) 4 to 20mA DC Bi-directional relay of HART communication signals is possible while the DCS and field devices are isolated each other.
DA1 Distributor 4 to 20 mA DC, from 2-wire type transmitter Output 1: 1 to 5 V DC
Output 2: DC Voltage or DC Current		  
DA5 Distributor (with Square Root Extractor) Field configurable
DA9 Distributor (Non-isolated) Output 1: 1 to 5 V DC Non-isolated output
DA2 Distributor (with Communication Function) Output 1: 1 to 5V DC
Output 2: 1 to 5 V DC		 BRAIN Communication via DSC/DSC2 card.
DA0 Output Isolator (Voltage Input/ Current Output Type) 1 to 5 V DC Output 1: DC Current 1500 V AC (1 min.) of withstand voltage for output signal.
DC0 Output Isolator (Current I/O Type) 4 to 20 mA DC Output 1: 4 to 20 mA or 10 to 50 mA DC
DH0 Output Isolator (Voltage I/O Type) 1 to 5 V DC Output 1: DC Voltage
DH1 Isolator DC Voltage or DC Current Output 1: 1 to 5V DC
Output 2: DC Voltage or DC Current		 Fixed range
DH2 Isolator (Free Range Type) Free range Field configurable
DH5 Isolator (with Square Root Extractor) 1 to 5 V DC Field configurable
DM1 Isolator (mV Input Free Range Type) DC mV Signal Field configurable
DR5 RTD Converter (Free Range Type) Resistance Temperature Detector (RTD) Output 1: 1 to 5 V DC
Output 2: DC Voltage or DC Current		 Field configurable
DT5 Thermocouple Converter (Free Range Type) Thermocouple Field configurable
DS1 Potentiometer Converter (Free Range Type) Potentiometer resistance (3-wire type) Output 1: 1 to 5 V DC
Output 2: DC Voltage or DC Current		 Field configurable
DP1 Pulse Repeater Contact Pulse, Voltage Pulse or Current Pulse Output 1: Open collector
Output 2: Open collector		 Pulse rate fixed in 1:1
DP3 Pulse to Analog Converter Output 1: 1 to 5 V DC
Output 2: DC Voltage or DC Current		 Field configurable
DQ0 Analog to Pulse Converter 1 to 5 V DC or 4 to 20 mA DC Output 1: Open collector Field configurable
DG1 PT Converter (R.M.S.) AC Voltage from PT Output 1: 1 to 5 V DC
Output 2: DC Voltage or DC Current		 R.M.S. conversion
DB1 CT Converter (R.M.S.) AC Current from CT R.M.S. conversion
DD1 Tachometer Converter AC Voltage from tachometer Mean value conversion
DF1 Pneumatic to Electrical Converter Pneumatic Signal Output 1: 1 to 5 V DC
Output 2: DC Voltage or DC Current		 Input signal range: 0.2 to 1.0 kg/cm2, 3 to 15 psi or 20 to 100 kPa
DF0 Electrical to Pneumatic Converter 1 to 5 V DC or 4 to 20 mA DC Pneumatic Signal
DSK Limit Alarm DC Voltage or DC Current 2 Relay Contacts 2 alarm outputs (N.O. or N.C. configurable)
DSC Communication I/F Card BRAIN Communication  
DSC2 Communication I/F Card BRAIN/RS485 Communication (Changeable) Applicable baud rate: 600 to 9600 bps.
DX1 Input/Output Thru Card Input resistance: 250 ohm (input type 2 only) Converts 4 to 20 mA DC signal to 1 to 5 V DC signals

Middelen

Applicatie informatie
Connect Field Instruments and Upstream Devices with HART Communication compatible Signal Conditioners
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Overzicht:

HART communication is a means of transmitting multiple signals by superimposing long-standard 4-20 mA DC analog signals on digital signals. The figure below is an example of connecting field instruments and upstream devices using HART communication compatible VJA1/H signal conditioners.

Industrieën:
Applicatie informatie
Connection to a Process Control Duplex DCS Using a Signal Conditioner
Thumbnail
Overzicht:

Depending on the importance of the process control system, individual isolation, duplexing, or other measures may be needed to increase its reliability. The D series signal conditioners offers DCS supporting input/output nests for connecting to upstream DCS input/output modules. 
What are the merits of conditioner nests?
(ns-faq-juxta-11008-select)
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  
Can I adjust the thermocouple input card (DT5)? I can't find anything like an adjustment volume.
(ns-faq-juxta-11054-setting)
This type is adjusted by using the VJ77 or Handy Terminal. Connecting it will require an extension card (DXT) or communication card (DSC2).
How much heat does the D series nest produce?
(ns-faq-juxta-11071-spec)
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.
Do you have any conditioners that support HART communication?
(ns-faq-juxta-11034-select)
A distributor for the V series (VJA1/H), and a distributor (DA7) and isolator (DC7) for the D series are available.
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. ...
How do I determine the internal load resistance?
(ns-faq-juxta-11012-spec)
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.
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.)
How is a handy terminal (JHT200) connected to a conditioner that allows range changes?
(ns-faq-juxta-11002-setting)
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).
Can I change settings from a BT200 (BRAIN terminal)?
(ns-faq-juxta-11003-spec)
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...
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...
How much resistance is there for current input?
(ns-faq-juxta-11010-spec)
The resistance is 250 Ω (4–20 mADC). However some computing units also have 100 Ω input.
What is the internal load resistance of pulse input?
(ns-faq-juxta-11011-spec)
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 ...
There are Pt100 Ω standards of IPTS-68, ITS-90, and JPt100 Ω, but what is the difference between them?
(ns-faq-juxta-11013-other)
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...
How many instruments can be connected to a voltage output terminal (1–5 VDC)?
(ns-faq-juxta-11014-spec)
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.
How many instruments can be connected to a current output terminal (4–20 mADC)?
(ns-faq-juxta-11015-spec)
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.
What frequency setting should I use on an analog pulse converter when I want to output an integral pulse at 0.01㎥/P by using a 100㎥/H flowmeter?
(ns-faq-juxta-11016-spec)
100 × 1000/10/H = 10000/3600 Hz = 2.778 Hz (4 significant digits).
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.
When I connect an open collector output conditioner with a counter or relay, it doesn't work.
(ns-faq-juxta-11017-spec)
The open collector needs a power supply. Use one within the maximum allowable load. ...
When ordering slide resistor conditioners, on models with total resistance, zero, and span resistance, what does total resistance mean?
(ns-faq-juxta-11022-other)
The total resistance ≥ zero side resistance + span resistance.
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.
What happens on a "burnout OFF"?
(ns-faq-juxta-11024-spec)
When input is interrupted it reaches ±OVER, but which of these is uncertain.
Is an externally attached resistance for current input included?
(ns-faq-juxta-11033-select)
It is with plug-in types. It is also sold separately.
Does the JUXTA VJ series support CCC and GB standards? Can it be used in China?
(ns-faq-juxta-11038-other)
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. ...
I purchased an isolator with a 4-20 mA current input specification. Can I use it with voltages of 1-5 VDC?
(ns-faq-juxta-11049-connect)
Yes. Wire it without using the included resistor.
With a 2 output type signal conditioner, when not using a current output terminal, how should I handle the terminal processing?
(ns-faq-juxta-11052-connect)
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.
There's no output with an isolator. What should I do?
(ns-faq-juxta-11055-connect)
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 acces...
There's no output with a distributor. What should I do?
(ns-faq-juxta-11056-connect)
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 v...
There's no output with a pulse signal repeater and pulse rate converter. What should I do?
(ns-faq-juxta-11059-connect)
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 ...
There is no output with a pulse/analog converter. What should I do?
(ns-faq-juxta-11061-connect)
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 c...
I purchased an isolator, and a resistor came with it. What is the resistor used for?
(ns-faq-juxta-11065-spec)
Resistors come with isolators that have terminal block format current input specifications. Please attach it to the input terminals before use.
There may be a 63% or 90% response depending on the manufacturer, but how should I compare these?
(ns-faq-juxta-11020-other)
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...
On the thermocouple temperature converter, when burnout is OFF, is any burnout detection current flowing?
(ns-faq-juxta-11073-spec)
No.
Please provide information about PCB usage. (JUXTA)
(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.
Is there a warm up time for a signal conditioner?
(ns-faq-juxta-11066-spec)
Yes. To satisfy the performance specifications, you should power the unit for 10–15 minutes.
There's no output with an RTD temperature converter. What should I do?
(ns-faq-juxta-11058-connect)
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 ...
There's no output with a thermocouple temperature converter. What should I do?
(ns-faq-juxta-11057-connect)
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 th...

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