The UPS has its own installation, operation, and service manual. The manual describes the UPS in detail and is part of the documentation set enclosed with your subsystem.
Environmental Monitor Unit (EMU)
The EMU is an internal circuit board that monitors the operation of the pedestal. The EMU monitors power supply voltages, fans, temperatures which are reported to the user, and controls (turns on and off) the audible alarm and status LED on the front panel. The EMU also reports the subsystem status to the controller that reports to the host, and has the capability of exchanging signals with auxiliary devices and controllers.
The EMU is located internally in the top rear of the pedestal as shown in (Figure
■An alarm switch (S1) that enables (up) or disables (down) the audible alarm
■A power monitor connector (UPS) allows the EMU to monitor and report the status of a battery backup power supply
■An External Fault Condition connector allows the EMU to monitor the status of a
EMU
