FTP9000 Series Programmable DC Power Supply Operation Manual
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3.8 Protection
FTP9000 series power supply provides protections against overvoltage, overcurrent, overpower, low voltage,
output reverse voltage, communication timed out, overtemperature.
When a protection occurs, the power supply will turn off output, sounds an alarm, and prompt corresponding
protection information on display.
1. Press
to enter the main menu.
2. Select “Set” >> “Protect” and press
to enter protection setting page as shown below:
Set
System
Edit
About
OVP
0.000 V
OCP
0.000 A
OPP
0.000 W
LVP
0.000 V
Over time
0.0 s
Detect RV OFF
Figure 3-12 Protection Set
3. Select the corresponding item to set the desired value.
4. When a protection occurred, press
to clear the protection state and warning message.
Overvoltage protection (OV/OVP)
It has two kinds of overvoltage protection: hardware overvoltage (OV) and software overvoltage (OVP).
Hardware overvoltage protection (OV): It is triggered once the output voltage exceeds 105% rated output
voltage, and “OV” is prompt on display.
Software overvoltage protection (OVP): It is programmable as shown in “Figure 3-12 Protection Set”. Users are
able to set the OVP threshold, set to 0 means to turn off OVP. OVP is triggered once the output voltage exceeds
OVP set, and “OVP” is prompt on display.
Overcurrent protection (OC/OCP)
It has two kinds of overcurrent protection: hardware overcurrent (OC) and software overcurrent (OCP).
Hardware overcurrent protection (OC): It is triggered once the output current exceeds 105% rated output
current, and “OC” is prompt on display.
Software overcurrent protection (OCP): It is programmable as shown in “Figure 3-12 Protection Set”. Users are
able to set the OCP threshold, set to 0 means to turn off OCP. OCP is triggered once the output current exceeds
OCP set, and “OCP” is prompt on display.
Overpower protection (OP/OPP)
It has two kinds of overpower protection: hardware overpower (OP) and software overpower (OPP).
