0100037-J0 Rev D
36
User Guide
Cordex HP 2.4kW / 3.0kW Modular Switched Mode Rectifier
8. Rectifier modes and factory defaults
8.1
Rectifier modes
There are two main rectifier modes: output voltage mode and the output current/power mode.
8.1.1 Output voltage modes
Voltage modes are under software control, and can be used to 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 F lists output voltage modes and a description of when they are active. These modes can be set via the
controller.
Table F — 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
If the rectifier is not connected to a controller, the rectifiers will switch to safe mode (51.4V
default) after five minutes.
8.1.2 Output current/power modes
These modes directly affect the output current and power.
Table G lists the output current/power modes and a
description of when they are active.
Table G — Output current/power modes
Output current 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.
Constant power mode
If the output current exceeds max rated current, the rectifier puts out constant power
within a specific voltage range. The rectifier is in constant power mode.
Overload
If the load current increases further, the output voltage and current will reduce. This
mode is called fold back mode or Over Load.
Summary of Contents for Cordex HP CXRF 48-2.4kW
Page 55: ......