Installation Manual

7
Installation Manual
Expansion/Triple Chassis Installation
When to use an Expansion Chassis
Use an Expansion Chassis or a Triple Expansion Chassis if the UPS has no card slot
available.
The Si
ngle (AP9600) or Triple Expansion Chassis (AP9604) are only
compatible with UPS models that have a DB9 serial port. They are
compatible with following UPS models only: SURT, SURTA,
Symmetra
®
Power Array/RM/LX/PX (excluding PX 250/500), SU,
SUA, and SUM.
When
you install the UPS Network Management Card 2 (NMC 2) in the chassis, the
NMC 2 communicates with the UPS through the cable connection between the
chassis and the UPS.
When to use the AC adapter (AP9505)
Use the optional AC adapter with a chassis u
nder the following circumstances:
• To connect the chassis to an independent AC input so that the NMC 2
can
continue to operate if
the UPS is turned off or not operating.
•
T
o provide the management products mounted in a Triple Expansi
on
Chassis with
more current than the UPS can provide through the UPS-to-
chassis cable.
A Smart-UPS or Sym
metra UPS can provide up to 200 mA.
See the chapter entitled “Power Considerations” in the AP9604
Installation Guide for more information on when to use the AC
adapter, available on the APC website www.apc.com.
For information about the current requirements for management
products, see “How to Install Multiple Management Cards” on
page 21.
Step 1: Disconnect the chassis from all power
Make sure that the Expansion Chassis or Triple Expansion Chassis is disconnected
from any power source:
1.
Disconnect the chassis cable from the UPS.
2. If the chassis uses an AC adapter (AP9505), disconnect that adapter from
the chassis.