SEL-2894

SEL-2894

Interface Converter

Transfer SEL Mirrored Bits communications via an IEEE C37.94 fiber-optic link through a communications multiplexer. Or, convert other EIA-232 serial links to IEEE C37.94 optical fiber links for improved safety, signal integrity, and longer distances.

Starting at

$507
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EIA-232 to Fiber-Optic Interface

Interface asynchronous EIA-232 devices with synchronous networks through IEEE C37.94 compliant multiplexers or transfer switches. The IEEE C37.94 standard provides plug-and-play transparent communications between different manufacturers' teleprotection and multiplexer devices. The SEL-2894 uses 850 nm wavelength optics.

SEL Mirrored Bits Communications

Connect the SEL-2894 to any relay with Mirrored Bits communications, and transport at data rates from 300 to 19200 bps with less than 375 µs delay, back-to-back.

Safety and Security

Install fiber-optic connections to isolate communications from ground potential rise and electrical interference.

SEL-2894 Features

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  1. EIA-232 Connection
  2. LED Indicators
  3. IEEE C37.94 Fiber-Optic Connection

SEL-2894 Details

High-Speed Communications
The SEL-2894 has very low latency adding only 375 µs of through delay back-to-back. It works with EIA-232 signals from 300 bps to 19,200 bps. Three LED Indicators
TX and RX green LEDs show incoming and outgoing fiber-optic states. A standard yellow alarm LED indicates a transmission problem. Selectable Time Reference
A side-selector switch on the SEL-2894 configures the internal clock for either external or internal time reference. Flexible Power Supply
The converter connects directly to a standard 9-pin serial port and receives power directly on Pin 1 so no external power is required when used with SEL relays. The converter can also receive power from an external supply when connected to other devices.
Use an SEL Transceiver Mounting Kit and adapter cable when connecting the transceiver to IEDs with an RJ-45 male serial connector or when the mounting depth is an issue (e.g., in switchgear applications). The following kits provide a simple and secure way to remote-mount the transceiver away from the host connector:

Kit Part Number:  915900573SEL Transceiver Mounting Kit Components: Mount onlyApplication: All applications

Kit Part Number:  915900574SEL Transceiver Mounting Kit Components: Mount and SEL-C478A cable (6 ft, RJ-45 to DB-9 female)Application: Connect to SEL-3350, SEL-3355, and SEL-3360 Automation Controllers or an SEL-851 relay

Kit Part Number: 915900575SEL Transceiver Mounting Kit Components: Mount and SEL-C641 cable (6 ft, DB-9 male to DB-9 female)Application: Connect to an SEL IED with a DB-9 interface