26
4.1
Start-up, Test and Shutdown
NOTE: ALL rack mount units require an external battery pack. Before
attempting to operate these units without a battery pack, contact Alpha
Technologies for additional information.
UPS Start-up
1. Plug the CFR’s AC line cord into a wall receptacle or turn the AC input circuit
breaker on. The TEST LED and OUTPUT LOAD display LEDs will flash for a
few seconds to indicate the CFR is powering up. The LINE PRESENT LED will
then come ON to indicate the AC input line is OK and the CFR is running on AC
line power.
2. Switch the rear panel BATTERY circuit breaker ON to activate the battery circuit.
3. Test the UPS by unplugging the AC line cord fromthe wall receptacle or turn the
AC Circuit Breaker off. The front panel amber “LINE FAILURE” LED will light as
the UPS initiates LINE FAILURE operation.
4. Plug the AC line cord back into the wall receptacle or turn the AC Circuit Breaker
on. The “LINE PRESENT” LED will come ON to indicate the presence of AC
line power. Within 20 seconds, the “LINE FAILURE” LED will shut OFF to indicate
that the UPS has resumed LINE PRESENT operation.
5. Once the UPS has been tested, switch the load ON, one piece of equipment at
a time, and observe the front panel “OUTPUT LOAD” display. As each additional
piece of equipment is switched ON, the LEDs will display the increased load up
to 100%. If the “OVERLOAD” LED lights, decrease the load by switching
equipment OFF, one unit at a time, until the “OVERLOAD” LED goes OFF.
WARNING: Do not run the UPS in an overloaded condition.
4. OPERATION
47
“BATTERY PARAMETERS” provides UPS Battery Voltage, Charger Current,
and Charger Status information.
5. RS-232 TERMINAL COMMUNICATION
4
5
“USER PARAMETERS” allows you to set the information for automatic
test, output voltage shutdown, display unit identification, and to change
the security codes. Whenever one of the USER PARAMETER items is
accessed, you are prompted for a security code.
NOTE: The code (1111) is preset at the factory and can be changed by
entering the SET USER SECURITY CODE screen (menu item 58).
Unsolicited Alarm Messages
The CFR can transmit alarm messages (in ASCII format) to notify a status
change or a power problem. Once this feature is enabled, alarm messages are
transmitted automatically on the RS-232 port as soon as the status of the CFR changes.
You can connect a terminal to the CFR to monitor its status and log all power problems.
Refer to menu items 56 and 509-511 for a detailed description.
Automatic Output Shutdown
The output of the CFR can be turned off by sending a command via the RS-
232 port using a computer or terminal. Refer to menu items 501-508 a for detailed
description (menu items 501-506 are intended for scheduled shutdown even when the
AC line is present; 507 and 508 items can be used to switch the inverter ON and OFF
to preserve the battery).
5.8
Battery Parameters
Voltage
Voltage indicates the average DC voltage of UPS batteries. When the UPS is
running in “LINE PRESENT” mode and the batteries are charged, the voltage will be
approximately 27.6 VDC (equal to the charger’s “FLOAT” charge). When the UPS is
running in “LINE FAILURE” mode, the battery voltage will slowly decrease until the
Battery Low Voltage Cutout is reached (approximately 21.0 VDC). Once utility power is
restored, after a prolonged power outage, the battery voltage will slowly climb until the
batteries are recharged.
NOTE: If external batteries are connected, their voltage will be reflected as
well.
Battery Current
When the UPS is running in “LINE PRESENT” mode, the average DC charger
current is displayed (i.e., 2.1 Amps). When the UPS is running in “INVERTER” mode
the battery charge current is zero (0).
Charger Status
When the UPS is in “LINE PRESENT” mode, the charger keeps the batteries
charged, indicated by “CHARGER STATUS ON”. When the UPS is in “LINE FAILURE”
mode and running on the batteries, the charger immediately switches OFF, indicated
by the display “CHARGER STATUS OFF”. Once utility power returns, or an alternative
power source (generator) is connected, the charger will switch ON and the DC current
will slowly rise after an initial 3 second “soft start” delay.
5.9
User Parameters
