Installation Guide
9
1.8
Power Supply Status LEDs
Each NX-7500 AC or DC power supply module has a single bi-color LED to indicate power supply status. The LED
is visible on the rear panel of each installed power supply.
The LED functionality for the power supplies is listed in the following table:
1.9
Power Protection
• If possible, use a circuit dedicated to data processing equipment. Commercial electrical contractors are familiar
with wiring for data processing equipment and can help with the load balancing of these circuits.
• Install surge protection. Be sure to use a surge protection device between the electricity source and the
NX-7500 series integrated services platform.
• Install an
Uninterruptible Power Supply
(UPS). A UPS provides continuous power during a power outage. Some
UPS devices have integral surge protection. UPS equipment requires periodic maintenance to ensure reliability.
A UPS of the proper capacity for the data processing equipment must be purchased.
State
Description
Off
No power to all power supplies
Flashing red
No input power
Flashing blue or green
Power present. Only standby output on.
Blue or green
Power supply on. Normal operation.
Red
Power supply failure
Flashing red/blue
or
Flashing red/green
Power supply warning. Reaching end of life or exceeding
limits.
