EnerSys Alpha Micro 100, Installation And Operation Manual

Page: 33 / 88

017-220-J0 Rev C
32
9.2 Operating Modes
The Alpha Micro 100 operating mode automatically changes as a result of changes in the AC input voltage. Refer to
Chapter "3. Specifications", for Boost/Buck/Line transfer thresholds.
Table H — UPS Operating Modes
Mode Description
SHUTDOWN
The Alpha Micro 100 inverter is switched off. Line power is disconnected from the load.
LINE The Alpha Micro 100 is switched on. Line power is provided to the load.
BOOST1 or BOOST2
When the input voltage is lower than the nominal voltage, the Alpha Micro 100 raises line
voltage without using the batteries. Automatic voltage regulation (AVR) is enabled.
BUCK1 or BUCK2 The Alpha Micro 100 lowers line voltage without using the batteries. AVR is enabled.
INVERTER The Alpha Micro 100 is providing backup battery power to the load.
RETRAN The Alpha Micro 100 is transferring from Inverter mode to Line mode.
TRAN The Alpha Micro 100 is transferring from the state it is now in into Inverter mode.
STANDBY
The Alpha Micro 100 is switched on and waiting for the line power to be qualified or the user to
clear some faults.
CAUTION: Do not touch the AC output terminals; they may become energized.
BYPASS
This locks the unit into line mode and turns off the battery charger so the unit can work with a
manual break-before-make bypass switch. AVR will be disabled. This mode may be used to
service the batteries.
9.3 Control Parameters
The Alpha Micro 100's parameters can be controlled, programmed and adjusted to suit a user's specific application
needs. The following table lists the various parameters and their functions. These parameters can be accessed and
modified using the web interface or the USB serial port.
Table I — Control Parameters
Web Interface Description
AC Output Shutdown
When this function is switched on, the Alpha Micro 100 inverter is shut off. Neither Line nor
Inverter power is supplied to the load.
DC Output Shutdown
When this function is switched On, the LVD configured relay will be de-energized. Applies when
ANY programmable dry contact is programmed to be the LVD indicator. When the function
is switched from On to Off, a 10 second delay occurs before the LVD configured relay is re-
energized.. See "9.7.4 Programming the Dry Contacts" on page 67.
Bypass Mode
This function can be enabled only when the Alpha Micro 100 is in Line mode.
When enabled, the unit can work with a manual break-before-make bypass switch. AVR and
battery charger will be disabled. This mode may be used to service the batteries.
Power Quality or AVR
This function toggles between:
AUTOMATIC VOLTAGE REGULATION (AVR): The buck and boost modes are active.
OR:
QUALITY: The buck and boost modes are switched off, the input voltage is the Alpha Micro 100
output voltage.
Sense Normal or
Generator
This function can only be used when the Alpha Micro 100 is in Standby or Shutdown mode—see
Table H for operating mode descriptions.
This function toggles between:
NORMAL: The Alpha Micro 100 can operate successfully with most line conditions.
or,
GENERATOR: The Alpha Micro 100 input voltage and frequency parameters are expanded so
the Alpha Micro 100 can work with the fluctuations caused by a generator or noisy line.
Rated Input
Frequency
The frequency can only be changed when the Alpha Micro 100 is in Standby mode. This lets
you set the Alpha Micro 100’s frequency setting to 50 Hz or 60 Hz. This should ONLY be done
by a qualified technician acting under the instructions of Alpha Technologies Customer Service
Department. See "Service and Technical Support". Failure to contact Alpha Technologies before
doing this procedure could void your warranty.