9
Densité 3+ FR1
User Manual
Users who wish to utilize this alarm reporting
mechanism should be aware of the circuit driving
the GPI connector, in order to correctly interpret
its signalling.
Field-Serviceable Items
Field-serviceable items on the Densité 3+ FR1 frame itself include the power supplies, the
controller card, the system card, and the ventilation fans.
The power supplies, controller card and system card are located behind the door on the
front panel.
Changing the Power Supply
• The Densité 3+ FR1 frame supports dual redundant hot-swappable power supplies.
The basic configuration includes a single supply, plus an empty slot for the optional
redundant power supply. Installing a second power supply module and applying
power to it automatically engages the redundant supply mode. Each power supply has
its own power socket on the rear panel, and should be connected to the AC supply
using the supplied power cord or other approved cord.
• A single power supply can be installed in either of the two slots, but it makes sense to
install it in the right hand slot so that it is not necessary to remove the controller card if
you need to remove the power supply.
• Power integrity is enhanced if the two supplies are plugged into different circuits
To install or change a power supply module
1 Open the front door of the frame
2 If you are removing the left-side power supply, you must first remove the controller
card. See
