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The Power Filter Unit (PFU) supported in TJ1600-2 chassis supports load sharing on redundancy basis i.e. if one PSU fails, other will be the active load driver and provide a stable DC power to other cards in the system. The unit provides a filtered input voltage of -40V to -57.6V to the chassis and the cards on the chassis.
There are two HCPPFU04 cards in each system to provide input source redundancy. An EMI filter is used to restrict conducted emissions. The filters have transient voltage suppressors to prevent voltage surges affecting the system.
Front panel
The front panel of this unit provides a power connector and a local safety ground connection.
Visual indicator details
The visual indicators on the HCPPFU04 card include two LEDs namely Act (ACTIVE) and Sts (STATUS), provided to indicate the card status and whether the card has become active.
TJ1600-6 HCPPFU04 - LED indications
Card State |
Sts LED |
Act LED |
|---|---|---|
Card initialization: State before the card initialize is complete on card insertion. |
Amber (Steady) |
Amber (Steady) |
Card in service: Initialization complete and card in service. |
Green (Steady) |
Green (Steady) |
Card mis-match: Node has already configured the slot with some other card. |
Amber |
Amber |
Card failed during boot up. |
Red |
Amber |
Card failed while in-service. |
Red |
Green |
Operational specifications
TJ1600-6 HCPPFU04 - Operational specifications
Specification |
Range |
|---|---|
Input Voltage Range |
-40V to -57.6V DC |
Reverse Polarity Protection |
Continuous |
Input Current |
21A continuous at nominal voltage, 25A maximum at -40V during normal operation. |
Maximum operating Ambient Temperature |
-5°C to 55°C |
Output Voltage |
-40V to -57V DC |
Output Current |
21A |
Output Power |
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Efficiency |
>90% Load when input is -48V DC |
Fuse |
40A Telecom fuse |
Under Voltage Protection |
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Hold-up Time (Interruption) |
1.5ms at -53.2V and above |
Power Interface |
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Protections |
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Status Indication |
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