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IS200ISBEH1A

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General Electric IS200ISBEH1A is an ISBus extender board that converts RS-485 signals between electrical and fiber-optic paths and supports node bypass.
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Technical specifications for IS200ISBEH1A

  • Manufacturer:
    General Electric
  • Part Number:
    IS200ISBEH1A
  • Product Family:
    GE Mark V/VI Driver Board
  • Product Type:
    ISBus Extender Board
  • Stock:
    1
  • Communication System:
    ISBus
  • Conversion Function:
    Fiber-optic to electrical RS-485
  • Mounting:
    DIN rail
  • Module Power:
    24 Vdc
  • Fiber Interfaces:
    U5 receive and U9 transmit, ST type
  • Adjustable Hardware:
    JP1 interlock-bypass jumper
  • Indicators:
    Four LEDs
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • 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 Signal Conversion Bypass Relay Connectors & Power Status Indication

Features:

  • IS200ISBEH1A converts ISBus traffic between RS-485 electrical and fiber-optic media.
  • An interlock-controlled relay keeps an unpowered node from opening the communication ring.
  • Separate optical, electrical, and power connectors divide the board's interface boundaries.
IS200ISBEH1A supports inter-panel ISBus communication where the standard shielded-pair transceiver path must continue over fiber.

The relay logic in IS200ISBEH1A handles both normal full-duplex routing and the bypass state created by loss of relay power or an open interlock.

Four indicators on IS200ISBEH1A let an operator distinguish module power, incoming transmit activity, interlock state, and valid optical carrier detection.

The General Electric IS200ISBEH1A ISBus Extender Board may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
General Electric IS200ISBEH1A ISBus Extender Board Manuals, Datasheets, LinksImportant 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.

Electrical and Optical Path

  • Electrical side: The full-duplex interface uses differential RS-485 signals.
  • Transmit path: Electrical input is converted to the fiber-optic output.
  • Receive path: Optical input is converted back to differential electrical data.
  • Data timing: The receive route includes retiming before the electrical output.

Ring Continuity Logic

  • Normal state: Powered relay contacts connect the source to the optical ISBus path.
  • Interlock: The relay also requires a closed interlock connection.
  • Power-loss state: Normal source transmit and receive connections are interrupted.
  • Bypass route: Converted optical receive data is coupled to the optical transmitter.

Interface Assignment

  • P1A: This connector carries the full-duplex electrical interface and relay interlock.
  • P1B: The auxiliary connector accepts a separate RS-485 transmit input.
  • U5/U9: ST connectors provide optical receive and transmit interfaces respectively.
  • Module supply: Active electronics use an independent 24 Vdc power input.

Four Visual States

  • POWER: The green LED confirms 24 Vdc at the board electronics.
  • XMIT DATA IN: The yellow LED follows electrical transmit activity.
  • INTERLOCK ACTIVE: A green LED reports relay-interlock power.
  • DETECT: The remaining green LED indicates valid optical input carrier.
Description
General Electric IS200ISBEH1A is an ISBus Extender Board for the high-speed synchronous ISBus communication system. It connects between a full-duplex source and the ISBus, converting RS-485 electrical signals to and from the fiber-optic link used for inter-panel communication.

A bypass relay on IS200ISBEH1A links the full-duplex transmit input or auxiliary transmit input to the optical transmit output while returning optical receive data through the electrical receive path. Relay operation depends on 24 Vdc power and a closed interlock path.

If relay power is removed, IS200ISBEH1A interrupts the normal full-duplex source connections and joins optical receive data to the optical transmit route after conversion, allowing the ring path to bypass the unpowered node.

The DIN-rail-mounted IS200ISBEH1A provides six connectors, one terminal board, the JP1 interlock-bypass jumper, and four indicators. U5 is the ST-type receive interface and U9 is the ST-type transmit interface; a separate 24 Vdc input powers the active board electronics.
Alternative Names
IS200-ISBE-H1A GE IS200ISBEH1A IS200 ISBE H1A General Electric IS200ISBEH1A ISBE H1 ISBus Extender IS200ISBE H1A GE InSync Bus Extender Board IS200ISBEHIA
Technical notes
IS200ISBEH1A extends an ISBus ring across fiber while retaining a 24 Vdc interlock-controlled relay path for node bypass.
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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.
An ISBus node loses cabinet power. What path does IS200ISBEH1A establish instead of leaving the ring open?
The de-energized relay on IS200ISBEH1A places the affected station in bypass, allowing incoming optical traffic to continue toward the next ring segment rather than terminating at the unpowered source interface.
Only fiber-to-electrical conversion is needed and P1A is not used. Which IS200ISBEH1A input accepts the auxiliary transmit signal?
P1B on IS200ISBEH1A provides the auxiliary RS-485 transmit input for installations that do not use the P1A full-duplex connector.
Receive and transmit fibers were swapped during service. How are the ST connectors assigned on IS200ISBEH1A?
U5 is the receive-data interface to ISBus, and U9 is the transmit-data interface on IS200ISBEH1A.
The bypass relay on IS200ISBEH1A will not energize although board electronics are powered. What separate conditions control it?
IS200ISBEH1A requires the interlock 24 Vdc supply and a closed interlock path; JP1 can bypass the external interlock but does not replace relay power.
Which IS200ISBEH1A indicators separate optical carrier detection from electrical transmit activity?
The DETECT indicator on IS200ISBEH1A follows valid optical input, while XMIT DATA IN follows electrical transmit data; separate LEDs show module power and interlock-active state.
JP1 has been moved from its default position on IS200ISBEH1A. What operational change does that make?
The default JP1 position requires the external interlock to close before IS200ISBEH1A energizes its relay; the bypass position shorts that interlock requirement while power is still required.