Eaton SC100, Operation Handbook

Page: 30 / 86

SC100 Handbook
24
Copyright © 2008-2011 Eaton Corporation. All Rights Reserved.
IPN 997-00012-63C August 2011
Rectifier Shutdown
Manual Rectifier Shutdown
► To shut down a rectifier

In DCTools go to: Rectifiers > Configuration .

Set Rectifier Shutdown to Enabled .

In the Rectifiers table select the Shutdown check box.

The rectifier will shut down and the yellow LED will be on.

The SC100 will restart any shutdown rectifiers if: ac has failed, or more than one rectifier has
failed, or the bus voltage is below the Low Load threshold, or Rectifier Shutdown is disabled.

Shutdown rectifiers will restart if Load Based Rectifier Shutdown is enabled.
Rectifier Restart
► To restart all shutdown rectifiers

Use the SC100 keypad to go to: Menu > Controls >Restart All Rectifiers.
Or

In DCTools go to: Rectifiers . Click Restart All Rectifiers.
► To restart individual rectifiers

In DCTools go to: Rectifiers .

For each rectifier clear the Shutdown check box.
The rectifier(s) will then resume normal operation.

The SC100 will restart any shutdown rectifiers if: ac has failed, or more than one rectifier has
failed, or the bus voltage is below the Low Load threshold, or Rectifier Shutdown is disabled.

The SC100 will restart a shutdown rectifier if LBRS is active. See Load Based Rectifier Shutdown
on page
24 .
Load Based Rectifier Shutdown

Load Based Rectifier Shutdown is not available with APR48-3G, EPR48-3G, APR24-3G and
CR48-3G rectifiers.
If Load Based Rectifier Shutdown (LBRS) is enabled then the SC100 automatically shuts down
rectifiers when the total load current is significantly less than the total rectifier capacity.
This raises the average load on the remaining rectifiers which will then operate at a higher
efficiency. This results in a decrease in system power consumption.
The run time of all rectifiers is recorded and balanced to ensure even aging (and a balanced
number of rectifiers on each ac phase if rectifiers are assigned to phases).
The SC100 will progressively restart rectifiers if the load increases.

Rectifiers shut down by LBRS will have the yellow LED on.

If N plus 0 rectifier redundancy is selected, then only sufficient rectifiers to supply the load will be
on. If N plus 1 rectifier redundancy is selected, then one additional rectifier will always be on.

The SC100 will automatically restart all rectifiers if ac supply has failed, or more than one rectifier
has failed, or Battery Test / Equalize / Fast Charge are active, or the bus voltage is below the Low
Load threshold.