Power supplies, Fan tray – Thinklogical VX640 Router Manual User Manual
Page 15
VX640 Router Manual, Rev. F
10
November, 2013
Power Supplies
The dual, redundant power supplies for each card cage ensure continuous, uninterrupted power. The
supplies are current sharing which means the supplies equally share the load. If a power supply fails,
the redundant power supply can support the entire current load of one fully populated card cage.
Although the VX Router functions properly with one Power Module per card cage, it is recommended
that both modules be used, preferably connected to two independent power sources (for redundancy).
Additionally, the hot-swappable feature allows for easy replacement of a module without interrupting the
VX Router’s system functionality. All four power supplies should be turned on during normal use,
even if one of the card cages is not populated with modules.
Fan Tray
The VX640 Router uses 3 DC fans located in one modular, hot-swappable fan tray designed for easy
replacement without interrupting system functionality. The Fan Tray forces air into the chassis
through air baffles in the front door. This cools the vertically mounted I/O cards, the integrated
circuits on the Switch Cards, and the backplane, as well as removing any heat generated by
the power supply modules. (Each power supply module also has its own, internal cooling fan.)
Warning!
KEEP THE DOOR CLOSED WHEN IN USE! The VX640 Front Door contains air-
flow baffles that are integral to the router’s cooling system. Do not leave the front door
open or off the chassis for more than a few minutes if the unit is running. Keeping the front
door open for an extended period may lead to a malfunction of the VX640.
The Fan Tray is also equipped with an Annunciator Port for the use of alarms. The system alarms can
be configured to trigger an external control system or generate e-mail notifications.
ALARM
Annunciator
Ports for
ALARMS
VX640 Fan Tray with Alarm Annunciator
The VX640 Critical Hardware Alarms are as follows (Contacts are NC, Normally Closed):
Alarm Descriptions for the VX640