Alpha Technologies Cordex HP CXRF 48-12kW - Manual (Page 31)

29 9400000-J0 Rev C
9.2 Main Rectifier Modes
In addition to the main rectifier states, there is a set of main rectifier modes. These modes can be divided into two
categories, the output voltage mode and the output current/power mode.
9.2.1 Output Voltage Modes
Voltage modes can be thought of as modes that, under software control, can directly adjust the output voltage.
The qualification of “under software control” is made because there are processes that occur in the rectifier
that can change the output voltage that do not adjust the output voltage directly, for example, if the rectifier has
reached the current limit.
Table B lists four output voltage modes and a description of when they are active.
Table B — Output voltage modes
Output Voltage Modes Active when…
Float Output voltage is set to the float voltage setting.
Equalize Output voltage is set to the equalize voltage setting.
Battery Test Output voltage is set to the battery test voltage setting.
Safe Output voltage is set to the safe mode voltage setting.
9.2.2 Output Current/Power Modes
These modes directly affect the output current and power. Table C lists the four output current/power modes and
a description of when they are active.
Table C — Output current/power modes
Output Voltage Modes Active when…
Temperature foldback mode
Output current and power limit have been reduced because a high temperature has
been detected on the heatsink or internal ambient temperature sensor.
AC foldback mode
Output current and power limits have been reduced because the AC input voltage is
low. This will reduce the risk of tripping an AC breaker due to increased AC current
draw as the AC voltage decreases.
Short circuit foldback mode Output current limit has been reduced due to a short circuit at the output.
Internal fault foldback mode Output current limit has been reduced due to an internal fault.
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