User's Manual

Table Of Contents
46 Installation
Chapter 2 - Installation Guidelines
2.2.5.1 Preparing a Power Cable for the regular (35A) PIU
A 2.5m DC power cable is supplied with each chassis. Additional DC cables can
be ordered from Alvarion. If necessary, use the following instruction to prepare a
DC cable.
1 Use a cable capable of supporting a current of at least 40A. Use a cable with 2
x 8AWG (or thicker) wires for the power plus an additional 8AWG to 20AWG
ground wire.
2 The matching power connector to be used is Amphenol D-type power P/N
177TWA/3W3/SP3Y with high power socket contacts P/N 17DM53744-1.
3 Connect the cable to the power connector as follows:
Pin 1 (RTN): Red (8 AWG min wire)
Pin 2 (-48V): Black (8 AWG min wire)
Pin 3 ( ): Ground (shield) (8AWG-20AWG wire)
Table 2-6: PIU LEDs
PWR and
MASTER/ACT LEDs
PIU Status
PWR MASTER/
ACT
Off Off Chassis is not connected to power
Red Off Power input is out of range or PIU card is damaged. Chassis is powered by the
redundant PIU
Red Green Power input is out of range or PIU card is damaged. Chassis is powered by the PIU
Green Off Power to PIU is OK. PIU is in redundant mode and the chassis is powered from the
other PIU
Green Green Power to PIU is OK. The chassis is powered from the PIU.
HOT SWAP LED Off: Power from the module to the chassis is not disconnected, the PIU is not ready for
removal
Blue: Power from the module to the chassis can be disconnected and the PIU can be
safely removed
For instructions on using the HOT SWAP handles refer to
Section 2.2.9.
To prepare the power cable: