Schweitzer Engineering Laboratories, Inc. SEL-411L Data Sheet
35
Control Inputs
Optoisolated (Use With AC or DC Signals)
Main Board: No I/O
INT2, INT7, INT8, and
INTE Interface Boards: 8 inputs with no shared terminals
INT4, INTC, and INTD
Interface Board:
6 inputs with no shared terminals
18 inputs with shared terminals
(2 groups of 9 inputs with each group
sharing one terminal)
Voltage Options: 24, 48, 110, 125, 220, 250 V
Current Draw: < 5 mA at nominal voltage
< 8 mA for 110 V option
Sampling Rate: 2 kHz
DC Thresholds
24 Vdc: Pickup 19.2–30.0 Vdc;
Dropout < 14.4 Vdc
48 Vdc: Pickup 38.4–60.0 Vdc;
Dropout < 28.8 Vdc
110 Vdc: Pickup 88.0–132.0 Vdc;
Dropout < 66.0 Vdc
125 Vdc: Pickup 105–150.0 Vdc;
Dropout < 75 Vdc
220 Vdc: Pickup 176–264.0 Vdc;
Dropout < 132 Vdc
250 Vdc: Pickup 200–300.0 Vdc;
Dropout < 150 Vdc
AC Thresholds (Ratings met only when recommended control input
settings are used.)
24 Vac: Pickup 16.4–30.0 Vac rms;
Dropout <10.1 Vac rms
48 Vac: Pickup 32.8–60.0 Vac rms;
Dropout < 20.3 Vac rms
110 Vac: Pickup 75.1–132.0 Vac rms;
Dropout < 46.6 Vac rms
125 Vac: Pickup 89.6–150.0 Vac rms;
Dropout < 53.0 Vac rms
220 Vac: Pickup 150.3–264.0 Vac rms;
Dropout < 93.2 Vac rms
250 Vac: Pickup 170.6–264.0 Vac rms;
Dropout < 106 Vac rms
Communications Ports
EIA-232: 1 Front and 3 Rear
Serial Data Speed: 300–57600 bps
Communications Card Slot for Optional Ethernet Card
Ordering Options: 10/100BASE-T
Connector Type: RJ45
Ordering Option: 100BASE-FX Fiber-Optic
Connector Type: LC
Fiber Type: Multimode
Wavelength: 1300 nm
Source: LED
Min. TX Power: –19 dBm
Max. TX Power: –14 dBm
RX Sensitivity: –32 dBm
Sys. Gain: 13 dB
Differential Communications Ports
Fiber Optics—ST Connector
1550 nm Single-Mode
Tx Power: –18 dBm
Rx Min. Sensitivity: –58 dBm
Rx Max. Sensitivity: 0 dBm
System Gain: 40 dB
Distance Limitations: 120 km
1300 nm Multimode or Single-Mode
Tx Power: –18 dBm
Rx Min. Sensitivity: –58 dBm
Rx Max. Sensitivity: 0 dBm
System Gain: 40 dB
Distance Limitations: x km
where: x = 30 for multimode
x = 80 for single mode
1300 nm Single-Mode, C37.94
Tx Power: –24 dBm
Rx Min. Sensitivity: –37.8 dBm
Rx Max. Sensitivity: 0 dBm
System Gain: 13.8 dB
Distance Limitations: 15 km
850 nm Multimode, C37.94
Tx Mean Power: 50 µm: –23 dBm to –11 dBm
62.5 µm: –19 dBm to –11 dBm
Extinction Ratio: <10%
Rx Sensitivity: 50 µm: –32 dBm to –11 dBm
62.5 µm: –32 dBm to –11 dBm
System Gain: 50 µm: >9 dB; 62.5 µm: >13 dB
Distance Limitations: 2 km
Electrical
EIA-422: 64 kbps synchronous
CCITT G.703: 64 kbps synchronous, codirectional
Time Inputs
IRIG-B Input—Serial Port 1
Input: Demodulated IRIG-B
Rated Voltage: 5 Vdc
Operational Voltage Range: 0–8 Vdc
Logic High Threshold: 2.8 Vdc
Logic Low Threshold: 0.8 Vdc
Input Impedance: 2.5 k
IRIG-B Input—BNC Connector
Input: Demodulated IRIG-B
Rated Voltage: 5 Vdc
Operational Voltage Range: 0–8 Vdc
Logic High Threshold: 2.8 Vdc
Logic Low Threshold: 0.8 Vdc
Input Impedance: > 1 k
Rated Insulation Voltage: 150 Vdc
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