JUXTA R Series Relay Input/Output Cards

The R Series is DCS-supported status input / output signals interface. Relay I/O cards have 2 channels per card. Up to 16 cards (32 channels total) can be stored in a JIS and EIA conformed mounting nest, and connect with DCS (Yokogawa CENTUM-XL, µ-XL, etc.) by block connection by cable.


The R Series is a DCS-supported status input/output signals interface, consisting of relay input/output cards and a housing nest. It makes insulation for On-Off contact signal of push button switch, limit switch, etc. and transmit the signal to DCS. It also transmits status signal of DCS to field through contact output for On-Off of magnetic valve and start/stop/natural rotate/reverse rotate of motor, etc. Capability of high density mixed mounting of input / output cards, and horizontal and vertical types of mounting nests are available. Mounting nests conform with JIS and EIA specifications.

  • High density mounting
    Maximum 16 relay cards, 32 points (2 channels per card) relay cards on 19" rack.
  • Mounting nests conform JIS and EIA standards. Horizontal and vertical mounting types are available.
  • Block connection by cable with DCS (Yokogawa CENTUM-XL, µ-XL, etc.).
  • Mixed mounting for input and output cards
    Equipped DC / DC converter on input card realizes mixed mounting with output card in the same nest.
  • Standard test switch
    Equipped test switch (AUTO / OFF / ON) makes easy startup and loop test of system.
  • LED indicates relay operation status
  • Switchable output contact type
    Two N.O., N.C. or Form-C with internal changeover.
Construction Nest-mounting type
(up to 16 input/output cards and mounting nest)
Mounting Method: Rack mounting (JIS/EIA specifications 19") or wall mounting
Connection Method: M4 screw terminal (for power supply, grounding and alarm)
M3.5 screw terminal (for input/output)
Block connector cable (for DCS)
External Dimensions: Horizontal mounting RYH: 110×482.6×120.5 mm (H×W×D)
Vertical mounting RYV-3: 110×490×104.1 mm (H×W×D)
RYV-1/2: 110×490×142.4 mm (H×W×D)
Power Requirements: RYH: 24 V DC±10%
RYV: 85 to 132 V AC, 170 to 264 V AC or 24 V DC±10%


Nests for mounting

Model Product Name Descriptions
RYH-31 Nest for Relay I/O cards (Horizontal mounting type) For model ST2, ST3 or ST4 card (Yokogawa).
Maximum: 16 Relay inputs / outputs cards.
RYH-32 For connecting to model ST5, ST6 or ST7 card (Yokogawa).
Maximum: 16 Relay inputs / outputs cards.
RYV-11 Nest for Relay I/O cards (Vertical mounting type) For connecting to model ST2, ST3, ST4, ST5, ST6 or ST7 card (Yokogawa).
Maximum: 16 Relay inputs / outputs cards.


Relay Input / Output Cards

Model Product Name Input Type Output Type Descriptions
RY1-10 Relay Input Card Non-voltage contact or open collector Output 1: N.O.
Output 2: Form-C
No test switch
RY1-11 With test switch
RY2-10 Wet Contact Relay Input Card 100 V AC Wet voltage contact (85 to 132 V AC) Output 1: N.O.
Output 2: Form-C
No test switch
RY2-11 With test switch
RY2-20 200 V AC Wet voltage contact (170 to 264 V AC) No test switch
RY2-21 With test switch
RY2-30 24 V DC Wet voltage contact (24 V DC±10%) No test switch
RY2-31 With test switch
RY0-10 Relay Output Card Non-voltage contact or open collector Output 1: N.O. or N.C. (Non-voltage)
Output 2: Form-C
No test switch
RY0-11 With test switch (AUT - OFF - ON)
RY0-12 With test switch (OFF - AUT - ON)
RY0-20 Output 1: N.O. (Wet voltage, with fuse)
Output 2: Form-C
No test switch
RY0-21 With test switch (AUT - OFF - ON)
RY8-10 Relay Output Card for Motor Start/Stop Non-voltage contact or open collector Output 1: For motor start, N.O. or N.C. (dry voltage)
Output 2: For motor stop, Form-C (dry voltage)
No test switch
RY8-11 With test switch


What are the 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  
Can I change the burnout operation?
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.)
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...
How do I change 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...
The resistance is 250 Ω (4–20 mADC). However some computing units also have 100 Ω input.
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 does response speed **ms(10-90%) mean?
It means the time until the output reaches 63% when input is applied in 10 Ω 90% steps.
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. ...
A 90% response time is equivalent to 2.3 times the duration of a 63% response time.
What does "time constant" mean?
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...
Please provide information about PCB usage.
PCBs were banned from manufacturing and imports in 1975. JUXTA was first released in 1987, therefore they should not include PCBs.
Yes. To satisfy the performance specifications, you should power the unit for 10–15 minutes.


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