GW Instek PSU-Series User Manual - Manual (Page 27)

GETTING STARTED
27
Alarms
The PSU power supplies have a number of protection features.
When one of the protection alarms are tripped, the ALM icon on
the display will be lit and the type of alarm that has been tripped
will be shown on the display. When an alarm has been tripped the
output will be automatically turned off. For details on how to clear
an alarm or to set the protection modes, please see page 51.
OVP Over voltage protection (OVP) prevents a high
voltage from damaging the load. This alarm
can be set by the user.
OCP Over current protection prevents high current
from damaging the load. This alarm can be set
by the user.
UVL Under voltage limit. This function sets a
minimum voltage setting level for the output.
It can be set by the user.
OHP Over temperature protection for slave and
master board. OHP is a hardware protection
function. Only when the unit has cooled can
the over temperature protection alarms be
cleared.
OH1 Master board over temperature protection.
OH2 Slave board over temperature protection.
ALM SENS Sense alarm. This alarm will detect if the sense
wires have been connected to the wrong
polarity.
HW OVP Hardware over voltage protection. This is a
hardware OVP that is fixed at approximately
120% of the rated voltage output.