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          Active / Available from OEM
          Apter Power supports EH0*B identification, documentation review and quotation.

        EH0*B

        / 4.9
        1001 reviews ｜ Need a Specific Revision?
        Yokogawa EH0*B is a 1 to 5 V DC output isolator card for CENTUM signal paths. It reproduces one voltage command through an isolated low-resistance output for a load of 2 kΩ or greater.
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
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        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
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        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for EH0*B

        • Manufacturer:
          Yokogawa
        • Part Number:
          EH0*B
        • Product Family:
          Yokogawa DCS system
        • Product Type:
          Voltage Output Isolator Card
        • Stock:
          1
        • Input signal:
          1 to 5 V DC
        • Input resistance:
          1 MΩ; 100 kΩ when power is off
        • Output signal:
          1 to 5 V DC, one output
        • Output resistance:
          1 Ω maximum
        • Minimum load resistance:
          2 kΩ
        • Isolation:
          Input/output/power/ground isolated
        • Supply voltage:
          24 V DC ±10%
        • Maximum current consumption:
          50 mA
        • Operating temperature:
          0 to 50 °C
        • Relative humidity:
          5 to 90% RH, non-condensing
        • Style code:
          B
        • Allowable input voltage:
          ±30 V DC
        • Output points:
          1
        • Accuracy rating:
          Within ±0.1% of span
        • Isolation resistance:
          100 MΩ at 500 V DC between output, input and power circuits
        • Output-to-input withstand voltage:
          1,500 V AC for 1 minute
        • Input-to-power withstand voltage:
          500 V AC for 1 minute
        • Ambient-temperature effect:
          Maximum ±0.2% of span per 10 °C change
        • Supply-voltage effect:
          Maximum ±0.1% of span for 24 V DC ±10%
        • Mounting method:
          Special signal-conditioner nest through backboard connector
        • Process wiring:
          M4 screw terminals in the signal-conditioner nest
        • Weight:
          0.154 lbs (0.07 kg)
        • Estimated shipping dimensions:
          7.3 x 2.4 x 11.5 cm
        • Tariff Code:
          Please confirm the destination before shipping.
        • Country of origin:
          Japan
        • Place of shipment:
          Xiamen,Fujian,China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Applications Performance Interoperability Operating Environment

        Features:

        • Transfers a standard 1 to 5 V command through an isolated channel.
        • Presents a high input resistance to the upstream controller output.
        • Drives receiving equipment whose input resistance is at least 2 kΩ.
        The ordered card is a voltage-output isolator and does not generate transmitter loop power.

        Its isolated transfer stage reproduces the control command while separating source and load grounds.

        Signal type, load resistance and terminal polarity must all match the existing voltage-command circuit.

        Apter Power can review sourcing, documentation and system matching for EH0*B.
        Verified resources for Yokogawa EH0*B: Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        • Valve-positioner and actuator command paths can be isolated from the controller analog output.
        • Recorder or indicator inputs can receive a clean 1 to 5 V signal without sharing the source ground.
        • Legacy panels use the card where a standard voltage command must cross between different electrical references.
        • The output follows the 1 to 5 V input across the documented operating range.
        • Output resistance remains no greater than 1 ohm under specified conditions.
        • A load of 2 kΩ or greater preserves the intended transfer accuracy.
        • The upstream device must provide a standard 1 to 5 V control signal.
        • The downstream receiver must be a high-impedance voltage input rather than a current loop.
        • Isolation permits equipment with different reference potentials to exchange the analog command.
        • The card operates from 0 to 50 °C in the supported signal-conditioner enclosure.
        • Permitted humidity is 5 to 90% RH without condensation.
        • The 24 V DC supply must remain within the documented ±10% range.
        Description
        EH0*B receives a 1 to 5 V DC command and transfers it across an isolated conditioning stage. The output maintains the same standard range with resistance no greater than 1 ohm for a suitably high-impedance load.

        The isolator breaks direct electrical continuity between the control source and the receiving device. This supports stable analog command distribution where ground-potential differences might otherwise introduce offset or circulating current.

        The receiving load must remain at or above 2 kΩ, and the off-state input path should be considered during maintenance tests. Substitution with a current-output card would change both signal type and field wiring.
        Alternative Names
        EH0*B Yokogawa EH0*B EH0 Star B EH0STARB EH0B EH0*B Voltage Output Isolator Card Yokogawa CENTUM Signal Conditioner Cards Yokogawa EH0*B Voltage Output Isolator Card
        Technical notes
        Keep the receiving load for Yokogawa EH0*B at 2 kΩ or higher; a lower impedance can drive the isolated voltage output outside specification.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        What signal does Yokogawa EH0*B isolate?
        It isolates one 1 to 5 V DC analog command and reproduces the same range at its output.
        Which receiving input is electrically suitable for Yokogawa EH0*B?
        Use a voltage input with resistance of at least 2 kΩ.
        Where can Yokogawa EH0*B reduce ground-loop risk?
        It can separate controller outputs from positioners, recorders or indicators on different reference potentials.
        What exact identifier should be used when checking Yokogawa EH0*B supply?
        Use EH0*B with its B style designation and verify the installed conditioner-card system.
        Why is a current-output replacement unsuitable for Yokogawa EH0*B without redesign?
        It would change the signal standard, load requirement and terminal wiring from voltage to current operation.
        Which receiving-device data is needed to quote Yokogawa EH0*B?
        Provide input resistance, signal range, cabinet identity, quantity and delivery destination.

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