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1.11.1 Voltage Control
The rectifier voltages are set by the system monitor via the serial communications bus. The rectifier
voltage can be set to any value between 21.5V-30V (24V mode), 43V-60V (48V mode). The monitor
operates in a number of modes that will affect the rectifier voltage setting.
Float Voltage Mode (AVC Off)
The monitor sets the float voltage to its target level at start up, and then resends this same level at
regular intervals thereafter. The voltage control is open loop.
Float Voltage Mode (AVC On)
The monitor sets the system voltage to its target float voltage, then monitors the system voltage
and adjusts rectifier voltages to maintain the system voltage at the desired float voltage.
Equalise Voltage Mode
The monitor sets the system voltage to an elevated level (e.g. 28V) for a fixed period, and then
resets the system voltage to the float voltage setting.
Fast Charge Mode
The monitor sets the system voltage to an elevated level after a battery discharge. This keeps the
rectifiers in current limit for a longer period, leading to a faster battery recharge. When the battery
is recharge the monitor resets the system voltage to the float voltage level.
1.11.2 Rectifier Alarm states
The rectifier will report the following states to the monitor via the serial communications:
AC Fail
The AC supply is not present at the rectifier.
Rectifier Fail
The rectifier is not functioning. This could be due to high output voltage, AC failure
or a fault with the rectifier internally.
Over Temperature
The internal temperature of the rectifier is too high and the rectifier has begun to limit
its output to control this temperature.
Fan Fail
The fan has ceased to work.
Current Limit
The rectifier output has reached maximum and the output current is being limited.
Shutdown
The rectifier has been shutdown by the monitor. It will restart again in 5 minutes
unless the shutdown instruction is repeated.
EEPROM Fault
The rectifier microprocessor has encountered an error while reading from EEPROM.
Soft Start
The rectifier has just turned on and is slowly increasing its output.
1.11.3 Rectifier Shutdown
The rectifier can be remotely forced to shutdown, via the serial communications, by the system monitor
and/or remote supervisory software. The rectifier will shut down for 5 minutes then restart. If a further
shutdown signal is received by the rectifier before the 5 minutes is up, the timer will reset to 5 minutes.
Hence, if a rectifier is to be kept shutdown a shutdown signal must be sent to it at regular intervals.
1.12
Post-mate Connection
The rectifier is "hot plug" capable. This is achieved by having one pin on the rear connector that mates
after the other pins. This pin must be connected to negative bus volts and the rectifier will not start until
this pin engages. If a rectifier will not start, ensure the rectifier is fully engaged in the Goldfish connector in
the rectifier shelf.
Newmar • PO Box 1306, Newport Beach, CA 92663
• Phone: 714-751-0488 • E-mail: techservice@newmarpower.com
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