Specifications

Summit WM Maintenance Guide, Software Version 5.3 113

Figure 12: Power supply LEDs

If a power supply is connected, the PWR GOOD (amber) LED is lit. If a power supply is not connected,

or if the power supply is connected but is experiencing problems, the FAULT (red) LED is lit.

Power FRUs

This section describes the power field replaceable units (FRUs) for the Summit WM200/2000 Controller.

It also provides procedures for removing, replacing, and verifying each FRU.

Summit WM200/2000 Controller, AC-powered, redundant system

The power FRUs on an AC-powered redundant Summit WM200/2000 Controller are two AC-to-DC

shelf power supply units (ACPCI).

Fan Tray

The fan tray is a plug-in unit for 19-inch houses and consists of two 12-V DC fans. It is suitable for on-

site installation and replacement. An air current (from left to right) of 84 m3/h per fan is sufficient. Each

fan generates a square wave, open collector signal that is proportional to the fan speed. The absence of

this signal indicates a fan problem in the system. The fan tray is hot swappable. In order to replace the

fan tray, the two screws on the fan tray cover must be removed.

WARNING!

Exercise caution when removing fan trays. It is recommended to wait until the fans stop rotating before removing the

fan trays.

Power supply LEDs