The functional specifications for the Bus Interface Unit:
Bus Interface Unit:
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Reliability: More than 183,000 hours of operation MTBF, calculated
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24VDC Power Supply Input:
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Nominal Rated Voltage: 24 VDC
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Voltage Range: 18 VDC to 30 VDC
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Power: 16.8 Watts maximum at full load (nominal voltage)
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Inrush Current: 15-50 Amps peak, 3 mS maximum. Inrush current is installation dependent. See page 2-4.
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Power Supply Output to I/O modules:
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Voltage: 6.5 VDC ±5%
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Maximum Current: 1.4 Amp maximum. See page 2-4.
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Holdup Time: 10 ms maximum from nominal input voltage.
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115VAC/125VDC Power Supply Input:
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Nominal Rated Voltage: 115 VAC, 125 VDC
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Voltage Range: 90 to 135 VAC, 105 to 150 VDC
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Frequency (AC): 47 to 63 Hz
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Power:
- 115 VAC: 48 VA maximum at full load (nominal voltage)
- 125 VAC: 24 W maximum at full load (nominal voltage)
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Inrush Current: 20 Amps peak, 3 mS maximum.
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Power Supply Output to I/O modules:
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Voltage: 6.5 VDC ±5%
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Maximum Current: 2 Amp maximum. See page 2-4.
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Holdup Time: 20 ms maximum from nominal input voltage.
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Bus Interface Unit Terminal Block:
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Power Requirements: 16 mA maximum
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Reliability: More than 600,000 hours of operation MTBF, calculated
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