Power Supply
7-23
PS5
00 AC Power Supply
Un
it
7
Battery Pack function In Case of Power Failure
The DC input consists of: battery wires, internal mounted battery fuse and charge
current limit.
The DC input consists of: battery pack wires and battery pack fuse.
Should the AC power interrupt, and properly charged battery pack is installed, the
PS500 AC automatically operates from the battery. The DC input is protected against
reverse polarity. The battery discharge current is limited by a slow blow 10A fuse.
The power provided by the battery pack is fed into the current limit circuit as well as
the DC/DC converter, thus replacing the DC power usually provided from the AC/DC
circuit. See
Figure 7-7
.
When the battery voltage drops below 44VDC, the alarm circuit generates a signal
towards the Coral IPx 500 common control MCP-IPx, indicating that the shutdown
procedure is to be started by the operator. When the battery voltage drops below
42VDC, the systems shuts down completely.
The power supply automatically restarts when the AC power returns. The battery pack
is recharged as soon as the AC/DC converter provides over 50VDC.
Disconnecting the AC Power Cord from the AC Power Mains
Disconnecting the AC power cord from the AC power mains will not cause normal
operation to discontinue. The battery pack takes over and provide the DC inputs
necessary for the DC/DC converter circuitry. All output voltages will remain active.
The best way to disable the output voltages is by turning OFF the power switch.
Turning the Power Switch OFF
Turning the power switch off allows you to shut down all power to the Coral IPx 500
system and to discontinue battery charging. It is used for maintenance purposes.
Monitoring Circuitry
The PS500 AC also limits the –48VDC output to feed the peripheral card slots.
All outputs, with the exception of the –48 VDC output, are regulated.
Voltage and current level monitoring circuitry checks each output of the PS500 AC
and produces an alarm signal to the Coral system main processor in the event of
malfunction.
Monitoring circuitry verifies that each voltage output is within specification. If any
voltage deviates from specification, the monitoring circuitry produces an alarm signal
to the Coral system processor, causing the red
Alarm
indicator to illuminate. Note that
Summary of Contents for Coral IPx 500
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Page 58: ...2 16 Coral IPx 500 Installation Manual Site Inspection 2 NOTES...
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Page 126: ...3 6 Coral IPx 500 Installation Manual Power Supply Test 3 NOTES...
Page 152: ...3 32 Coral IPx 500 Installation Manual Installation Wrap up 3 NOTES...
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Page 184: ...5 14 Coral IPx 500 Installation Manual Protection Devices 5 NOTES...
Page 188: ...5 18 Coral IPx 500 Installation Manual Power Fail PF Transfer Circuits 5 NOTES...
Page 204: ...5 34 Coral IPx 500 Installation Manual MDFipx Units Supplied by the Manufacturer 5 NOTES...
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Page 288: ...6 32 Coral IPx 500 Installation Manual Coral IPx 500M Main Cage Description 6 NOTES...
Page 296: ...6 40 Coral IPx 500 Installation Manual Coral IPx 500X Expansion Cage Description 6 NOTES...
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Page 332: ...7 16 Coral IPx 500 Installation Manual PS500 DC Power Supply Unit 7 NOTES...
Page 350: ...7 34 Coral IPx 500 Installation Manual PS500 AC Power Supply Unit 7 NOTES...
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Page 380: ...8 4 Coral IPx 500 Installation Manual Control Cards 8 NOTES...
Page 404: ...8 28 Coral IPx 500 Installation Manual IMC8 Card Flash Erasable Software Memory Unit 8 NOTES...
Page 412: ...8 36 Coral IPx 500 Installation Manual DBX Card Database Expansion Memory Unit 8 NOTES...
Page 426: ...8 50 Coral IPx 500 Installation Manual CLA Card CoraLINK Adapter 8 NOTES...
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Page 432: ...9 4 Coral IPx 500 Installation Manual Shared Service Circuitry Installation 9 NOTES...
Page 460: ...9 32 Coral IPx 500 Installation Manual Three Way Conference Conference Circuitry 9 NOTES...
Page 490: ...9 62 Coral IPx 500 Installation Manual KB1 KB2 KB3 RS 232E Data Serial Port 9 NOTES...
Page 498: ...9 70 Coral IPx 500 Installation Manual Music Background and Music On Hold M1 M2 9 NOTES...
Page 518: ...9 90 Coral IPx 500 Installation Manual Relay Contacts RLY1 RLY2 RLY3 9 NOTES...
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Page 526: ...10 6 Coral IPx 500 Installation Manual Peripheral Card Installation 10 NOTES...
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