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Power Supplies
7-7
PS
19 D
C
Power Sup
ply U
nit
7
-48VDC Output Power
The PS19 DC also filters and limits the –48VDC input to feed the peripheral card
slots.
Ripple and Noise
Filtering circuitry minimizes ripple and noise on the –48VDC feed to the peripheral
cards. The filtering circuitry produces an output voltage approximately 1.5V to 2.0V
lower than the input voltage to the PS19 DC.
Monitoring Circuitry
All outputs, with the exception of the –48VDC output, are regulated. Voltage and
current level monitoring circuitry check each output of the PS19 DC (including
message and ring generator currents), and produce an alarm signal to the Coral system
main processor in the event of malfunction.
Monitoring circuitry verifies that each voltage output (with the exception of the
–48VDC output) is within specification. If any of the voltage outputs drop below
specification, the monitoring circuitry produces an alarm signal to the Coral system
processor, causing the red
Alarm
indicator to illuminate. Note that the green
Power
indicator of the PS19 DC remains illuminated at the same time as the red alarm
indicator.
If the Input voltage drops below 36.5±1VDC, the unit shuts down and returns to power
only when the voltage increases above 38.5±1VDC again. Additionally, if the voltage
is greater than 62±1VDC, then the unit shuts down until the input voltage drops below
58±1VDC.
Summary of Contents for Coral IPx 500X
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Page 32: ...1 4 Coral IPx 800 Installation Manual Document Description 1 NOTES...
Page 34: ...1 6 Coral IPx 800 Installation Manual Special Symbols Used in this Document 1 NOTES...
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Page 48: ...2 8 Coral IPx 800 Installation Manual Site Inspection 2 NOTES...
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Page 116: ...3 26 Coral IPx 800 Installation Manual Shared Service and Peripheral Card Test 3 NOTES...
Page 118: ...3 28 Coral IPx 800 Installation Manual Installation Wrap up 3 NOTES...
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Page 142: ...5 16 Coral IPx 800 Installation Manual Protection Devices 5 NOTES...
Page 150: ...5 24 Coral IPx 800 Installation Manual Terminal Data Communication Ports RS 232E 5 NOTES...
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Page 278: ...6 38 Coral IPx 800 Installation Manual Cage Description and Installation 6 NOTES...
Page 292: ...6 52 Coral IPx 800 Installation Manual Coral IPx 800X Expansion Cage Description 6 NOTES...
Page 312: ...6 72 Coral IPx 800 Installation Manual System Configuration Options Coral IPx 800 6 NOTES...
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Page 352: ...7 38 Coral IPx 800 Installation Manual PS19 DC D Power Supply Unit with Duplication 7 NOTES...
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Page 372: ...8 4 Coral IPx 800 Installation Manual Common Control Cards 8 NOTES...
Page 382: ...8 14 Coral IPx 800 Installation Manual Software Authorization Unit SAU 8 NOTES...
Page 384: ...8 16 Coral IPx 800 Installation Manual MAP 8 NOTES...
Page 386: ...8 18 Coral IPx 800 Installation Manual LIU 8 NOTES...
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Page 396: ...8 26 Coral IPx 800 Installation Manual HDC Card High Density Control 8 NOTES...
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