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1200-Watt AC-Input Power Supply Replacement Instructions  7

Environmental Monitoring and Reporting Functions

Table 2

Typical Processor-Monitored Temperature Thresholds

Table 3

Typical Power Supply-Monitored DC-Voltage Thresholds

If the air temperature exceeds a defined threshold, the system processor displays warning messages
on the console terminal and, if the temperature exceeds the shutdown threshold, it shuts down the
system. The system stores the present parameter measurements for both temperature and DC voltage
in NVRAM, so that you can retrieve it later as a report of the last shutdown parameters.

The power supplies monitor internal power supply temperature and voltages. A power supply is
either within tolerance (Normal) or out of tolerance (Critical or Warning levels), as shown in Table 3.
If an internal power supply temperature or voltage reaches a critical level, the power supply shuts
down without any interaction with the system processor.

If the system detects that AC or DC input power is dropping, but it is able to recover before the power
supply shuts down, it logs the event as an intermittent power failure. The reporting functions display
the cumulative number of intermittent power failures logged since the last power up.

Environmental Reports

The system displays warning messages on the console if chassis interface-monitored parameters
exceed a desired threshold or if a blower failure occurs. You can also retrieve and display
environmental status reports with the show environmentshow environment allshow
environment last
 and show environment table commands. Parameters are measured and reporting
functions are updated every 60 seconds. A brief description of each of these commands follows.

Caution

To prevent overheating the chassis, ensure that your system is drawing cool inlet air.

Overtemperature conditions can occur if the system is drawing in the exhaust air of other equipment.
When viewing the chassis from the interface processor end, the airflow intake vent is on the front of
the chassis (below the card cage), and the exhaust vent in on the front of the chassis (behind the lower
front panel). Ensure adequate clearance around the sides of the chassis so that cooling air can flow
through the chassis interior unimpeded. Obstructing or blocking the chassis sides will restrict the
airflow and can cause the internal chassis temperature to exceed acceptable limits.

Parameter

Normal

High Warning

High Critical

Shutdown

Inlet

10–40C

44C

50C

Hotpoint

10–40C

54C

60C

Exhaust

10–40C

Processors

70C

Power supply

75C

Restart

40C

Parameter

Normal

Low Critical

Low Warning

High Warning

High Critical

+5V

4.74 to 5.26

4.49

4.74

5.25

5.52

+12V

10.20 to 13.8

10.76

11.37

12.64

13.24

–12V

–10.20 to –13.80

–10.15

–10.76

–13.25

–13.86

+24V

20.00 to 28.00

19.06

21.51

28.87

26.51

Summary of Contents for PWR-7513-AC

Page 1: ... A second identical power supply when installed provides redundant power In systems with redundant power the power supplies are load sharing and fully hot swappable you can remove and replace one supply while the remaining supply immediately ramps up to full power to maintain uninterrupted system operation The sections in this document include the following Product Overview page 2 Environmental Mo...

Page 2: ...ith the Cisco 7513 do not mix DC input and AC input power supplies in the same chassis Your Cisco 7513 must have either DC input or AC input power supplies The power A bay contains the first or standard power supply and the power B bay contains the second optional supply in systems with redundant power Table 1 lists the AC input power supply specifications ENABLE ENABLE H5268 EJE CT SLO T 0 SLO T ...

Page 3: ...th the Cisco 7513 uses a 20 amp male plug Figure 2 shows the cable connector plug and the 20 amp receptacle required to connect the 20 amp cable to your AC source Note Wiring codes prevent this type of power cable from being used with the power strips in equipment racks Figure 2 20 Amp AC Power Cable Connector and Plug and 20 Amp Receptacle 1 VAC volts direct current 2 The Cisco 7513 requires a mi...

Page 4: ... by the system or an actual failure in the AC input power Power shutdown initiated by the power supply because it detected an out of tolerance voltage condition in the power supply In systems with a single power supply and in systems with redundant power when both power supplies are shutting down the output fail LED lights momentarily as the system ramps down but goes out when the power supply has...

Page 5: ...ntrolled by the chassis interface board enable you to maintain normal system operation by identifying and resolving adverse conditions prior to loss of operation The environmental monitoring functions constantly monitor the internal chassis air temperature and DC supply voltages and currents Each power supply monitors its own voltage and temperature and shuts itself down if it detects a critical c...

Page 6: ... Immediate operator action is required Processor shutdown The chassis interface has detected a temperature or blower failure condition that could result in physical damage to system components and has disabled DC power to all interface processors in slots 0 through 5 and 8 through 12 DC power to the RSP2 chassis interface and blower stays on but no RSP2 related processing takes place Immediate ope...

Page 7: ... messages on the console if chassis interface monitored parameters exceed a desired threshold or if a blower failure occurs You can also retrieve and display environmental status reports with the show environment show environment all show environment last and show environment table commands Parameters are measured and reporting functions are updated every 60 seconds A brief description of each of ...

Page 8: ...iously measured at 27C 80F RSP 6 Hotpoint previously measured at 38C 100F RSP 6 Exhaust previously measured at 31C 87F 12 Voltage previously measured at 12 17 5 Voltage previously measured at 5 19 12 Voltage previously measured at 12 17 24 Voltage previously measured at 23 40 The show environment table command displays the temperature and voltage thresholds for each of the three RSP2 temperature s...

Page 9: ... as a percentage of maximum There are four active trip points restart OK temperature warning board shutdown and power supply shutdown There are no active trip points shown in the following example The soft shutdowns refer to the number of times the system will reset itself before it executes a complete chassis or hard shutdown The current temperature measurements at the three RSP2 sensors are disp...

Page 10: ...missing safety grounds Safety with Electricity You can remove or install a redundant second power supply without turning off the other supply Before removing a redundant power supply ensure that the first supply is powered on to ensure uninterrupted operation Follow these basic guidelines when working with any electrical equipment Before beginning any procedures requiring access to the chassis int...

Page 11: ...er supply A 1 4 inch flat blade and Number 2 Phillips screwdriver Small wire cutter If the chassis is mounted in an equipment rack and cables from other equipment fall in front of the power supply bays you will need cable ties to temporarily anchor the cables out of the way If access to the power supply bays is partially blocked by a power strip or other permanent rack fixture you will need a 1 4 ...

Page 12: ...affecting system operation When power is removed from one supply the redundant power feature causes the second supply to ramp up to full power and maintain uninterrupted system operation Note This procedure is not for new system installation perform this procedure only if you have already connected the system to network interfaces and performed the first time startup procedures described in the Ci...

Page 13: ...lated versions of this warning refer to page 16 Step 3 Disconnect the power cable from the power receptacle of the power supply to be replaced Step 4 Use the large slotted screwdriver to loosen the captive screw that secures the power supply to the chassis frame See Figure 5 Only loosen the captive screw of the power supply you are removing Figure 5 Removing and Replacing a Power Supply Step 5 Gra...

Page 14: ... Figure 6 and slide it into the power supply bay Push the supply all the way into the chassis until the sides are flush against the chassis frame To prevent damaging the backplane connector do not jam the power supply into the bay Step 2 Use the large slotted screwdriver to tighten the captive screw that secures the power supply to the chassis frame See Figure 5 Step 3 Reconnect the power cable to...

Page 15: ...he slot Do not slam the supply into the slot doing so can damage the connectors on the supply and the backplane Tighten the captive installation screw before proceeding Step 5 Verify that the output fail LED stays off If the output fail LED goes on move the power supply to the other bay if possible and turn the power switch ON If the LEDs go on properly when the supply is installed in the other ba...

Page 16: ...tä tulevat johtimet ennen laitteen huoltamista jotta vältät sähköiskun vaaran Attention Il est possible que cette unité soit munie de plusieurs cordons d alimentation Pour éviter les risques d électrocution débrancher les deux cordons d alimentation avant de réparer l unité Warnung Diese Einheit hat möglicherweise mehr als ein Netzkabel Zur Verringerung der Stromschlaggefahr trennen Sie beide Netz...

Page 17: ... 40 82 Use the following terminal settings VT100 emulation data bits 8 parity none stop bits 1 and baud rates up to 14 4 kbps For a copy of CIO s Frequently Asked Questions FAQ contact cio help cisco com For additional information contact cio team cisco com Note If you are a network administrator and need personal technical assistance with a Cisco product that is under warranty or covered by a mai...

Page 18: ...18 1200 Watt AC Input Power Supply Replacement Instructions Cisco Information Online ...

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