Remote Operation 
 
M370430-01  Rev B  5-69 
Configure Other Protection Mechanisms 
Foldback Protection 
Foldback protection causes the output of the power supply to shut 
down if the selected regulation mode is entered and the configured 
delay time expires. A delay time may be specified as well. The 
only way to clear foldback is by pressing the rotary Adjust/Enter 
control for 3 seconds and executing the Clear command. 
Command: 
[:]OUTPut[<channel>]:PROTection:CLEar 
Setting the Foldback Mode 
The following command will set the foldback mode. The mode 
selected by the character mnemonic sent will indicate which mode 
will trigger the foldback alarm to begin counting. For example, if 
the command is sent with the CV mnemonic and the output is 
enabled with no load attached (open circuit), the unit will operate 
in constant voltage mode and the foldback counter will begin 
counting. If the CC mode was set and the output was enabled with 
no load connected, the unit will operate in CV mode and the 
foldback counter will not trigger. 
To set the foldback mode, send the command:  
Command: 
[:]OUTPut[<channel>]:PROTection:FOLDback {?|CC|CV|NONE} 
Where: 
NONE indicates foldback protection is disabled. 
CC indicates the supply will shut down due to constant current 
condition. 
CV indicates the supply will shut down due to constant voltage. 
The default value is NONE. 
To set the foldback delay, send the command: 
Command: 
[:]OUTPut[<channel>]:PROTection:FOLDback:DELay 
<delay_time>