National Instruments RMX-4120 User Manual page 48

Blinking (in orange)
7. Check the output has turned off.
If you do not change the output settings, the OVP or OCP function will be activated again.
Undervoltage Limit (UVL)
This protection function is activated when you attempt to set the output voltage to a value that
is lower than the set undervoltage limit (the UVL trip point). In other words, it prevents you from
setting the output voltage to a value lower than the set limit. Triggering this protection function
does not turn the output off.
CONFIG setting CF15 allows you to choose whether the output setpoint is limited so that it
cannot be set to a value lower than the UVL trip point.
Complete the following steps to set the UVL trip point.
1. Press OCP•OVP.
The OCP•OVP key lights, and the OVP trip point and OCP trip point are displayed in the
display area.
2. Press OCP•OVP again. The present UVL trip point is displayed.
3. While viewing the panel display, turn the VOLTAGE knob to set the UVL trip point.
Table 2-1. UVL Setting Range 0 to 105% of the Rated Output Voltage
UVL Setting
4. Press OCP•OVP to finalize setting.
Figure 2-19. Display of the OCP Activation Alarm
Figure 2-20. Display Example of the UVL Setting
RMX-4120/
RMX-4124
0 to 31.5 V
RMX Programmable Power Supplies User Manual
Lit
RMX-4121/
RMX-4125
0 to 84 V 0 to 241.5 V
RMX-4122/ RMX-4123/
RMX-4126 RMX-4127
0 to 682.5 V
© National Instruments | 2-17