Schweitzer Engineering Laboratories SEL-2594 Instruction Manual Download Page 9

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Date Code 20010827

SEL-2594 Contact Transfer Module

SEL-2594 Operating Time Performance

SEL-2594 Operating Time Performance

depicts the time to transfer a contact closure between a local and

remote SEL-2594. This figure includes a nominal 0.5 millisecond multiplexer
through delay. Actual through delay will vary depending on multiplexer type
and network configuration.

Figure 9

End-to-End Operating Time Diagram

Input

SEL-2594

Contact

Power

Fiber-Optic

Transmitter

SEL-2594

Output

Fiber-Optic

Receiver

MULTIPLEXER

6.5 ms

0.5 ms

8 ms Total

1 ms

Summary of Contents for SEL-2594

Page 1: ...e to these conditions Isolation Fiber optic connections provide isolation and prevent ground loops associated with electric communications cables Immunity Fiber optics provide immunity to radiated and induced voltages associated with control wiring Simple LEDs indicate the state of inputs contact outputs and channel status All settings are made with a control switch PC software is not required Sec...

Page 2: ...unds when applied to center grounded systems LEDs indicate input and output status channel activity device status and communications channel health Fiber optic port provides electrical isolation Communications protocol enhances data transfer security Quick setup Rugged and compact flush mount enclosure withstands EMI RFI shock and vibration Output contacts rated for trip and close duty Each output...

Page 3: ... runs between devices increasing susceptibility to problems associated with metallic control wiring The SEL 2594 provides a contact interface between the protective relay and IEEE C37 94 compliant multiplexer equipment via a short haul fiber interface Figure 2 The SEL 2594 Is a Low Cost Teleprotection System for Use with IEEE C37 94 Compliant Digital Multiplexers SCADA Use the SEL 2594 to extend t...

Page 4: ...off at the multiplexer channel card and the payload data is included as a DS0 channel in the multiplexer payload At the remote multiplexer the DS0 data is decoded and inserted into a new transport C37 94 frame and sent to the remote SEL 2594 Receive Section The SEL 2594 receives data frame from the multiplexer channel card In the framer section the payload data is separated from the transport fram...

Page 5: ...ress setting When the SEL 2594 detects loop back it illuminates the LOOP LED and extinguishes the DATA LED The SEL 2594 disables the contact outputs to prevent acting on its own message during loop back The SEL 2594 provides 16 transmit and receive address choices Table 1 lists the switch positions for the 16 addresses Switch No Function 1 4 Transmit Address TX 5 8 Receive Address RX 9 Timing Mode...

Page 6: ... 2594s back to back set one timing mode switch to OFF With the timing mode switch set to OFF the SEL 2594 provides timing source for both of the SEL 2594s Connecting the SEL 2594 to a Multiplexer Use a duplex fiber optic patch cord to connect the SEL 2594 to an IEEE C37 94 compliant channel card Connect the TX ST connector on the SEL 2594 to the RX ST connector on the multiplexer channel card and ...

Page 7: ...h a multiplexer by connecting the transmit TX fiber on one unit to the receive fiber RX on the other The DATA TX and RX LEDs on both devices should illuminate In addition the form B ALARM contact should open and the ALARM LED should extinguish Step 6 Apply rated voltage to IN1 on one device The IN1 LED should illuminate on this device On the other SEL 2594 the OUT1 contact should close and the OUT...

Page 8: ...that the SEL 2594 has power applied has passed the self test routines and is ready to receive data IN1 through IN8 indicate that voltage is applied to the corresponding contact input terminals TX LED indicates the SEL 2594 is transmitting data OUT1 through OUT8 indicate that the contact output associated with that LED is energized An illuminated LOOP LED indicates that the SEL 2594 is receiving da...

Page 9: ... between a local and remote SEL 2594 This figure includes a nominal 0 5 millisecond multiplexer through delay Actual through delay will vary depending on multiplexer type and network configuration Figure 9 End to End Operating Time Diagram Input SEL 2594 Contact Power Fiber Optic Transmitter SEL 2594 Output Fiber Optic Receiver MULTIPLEXER MULTIPLEXER 6 5 ms 0 5 ms 8 ms Total 1 ms ...

Page 10: ...10 SEL 2594 Contact Transfer Module Date Code 20010827 Mechanical Diagram Mechanical Diagram Figure 10 SEL 2594 Dimensions and Drill Diagram ...

Page 11: ...ht 2 73 kg 3 lb 0 oz Dimensions 338 6 mm x 165 1 mm x 55 4 mm 13 33 H x 6 5 W x 2 18 D Type Tests Dielectric IEC 255 5 1977 2 5 kV rms 1 min Environmental IEC 68 2 1 1990 IEC 68 2 2 1974 Damp Heat Cycle IEC 68 2 30 1980 Impulse IEC 255 5 1977 5 kV 0 5 J Electrostatic Discharge IEC 801 2 1991 Level 4 IEC 255 22 2 1989 Level 4 Radio Frequency Immunity IEC 801 3 1984 IEC 255 22 3 1989 Fast Transient ...

Page 12: ...atents Pending The software firmware schematic drawings module commands and module messages are copyright protected by the United States Copyright Law and International Treaty provisions All rights are reserved You may not copy alter disassemble or reverse engineer the software You may not provide the software to any third party The information in this manual is furnished for informational use onl...

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