2: General Description
14
UPS471-02-00 PW9000DPA User Manual UK Dated 06/08/14
Figure 2.13 UPS Module control panel
2.5.1 UPS Module control panel keys
The keys on the operator control panel allow the user to:
• Make settings and adjustments via a menu driven LCD display
• Start-up and shut-down the UPS and transfer the load between inverter and bypass
• Monitor and display the UPS operating voltages, currents, frequencies and other values on the LCD display
• Reset/cancel an alarm
Key function summary
ON/OFF Keys
The UPS can be switched ON or OFF by simultaneously pressing both
ON/OFF
keys on the control panel. The
requirement to press both buttons is to help avoid accidental UPS start-up or shutdown operation.
During normal operation, pressing the two
ON/OFF
buttons simultaneously will immediately shutdown the UPS module.
• In a single module system (e.g. DPA-50) this will disconnect the UPS from the load unless the load is first
transferred to the maintenance bypass.
• In a parallel module system the power module will shutdown and be disconnected from the load bus. However, the
load may or may-not transfer to the static bypass depending on whether or not the number of remaining live
modules satisfies the system’s redundancy – i.e. if there are a sufficient number of modules remaining to support
the system’s load then the load will not be transferred.
Note:
To shut down all the modules in a parallel system you must press both
ON/OFF
buttons on every module.
KEYS
FUNCTION
ON/OFF
ON/OFF
Used to switch-on or switch-off the UPS
UP
)
Scroll upwards through a displayed menu
DOWN
(
)
Scroll downwards through a displayed menu.
ENTER
Confirms (selects) a chosen menu item.
RESET
Cancels an audible alarm. If the alarm condition was transient the
ALARM
LED will also extinguish, otherwise it will remain
ON
(red).
Power Management Display (PMD)
Mimic LED Indicators
Menu navigation &
Alarm & Reset
selection keys
Module ON/OFF
control keys
