© National Instruments | 2-27
RMX Programmable Power Supplies User Manual
CF03 Method for Clearing OHP, FAN, and AC-FAIL Alarms
Sets the method for clearing alarms when overheat protection (OHP), fan failure protection
(FAN), or low AC input protection (AC-FAIL) has been activated. You cannot set this parameter
separately for each protection function.
When you select “Auto,” if the overheat protection function (OHP) has been activated, output
will turn on again automatically when the internal temperature drops to a normal level. However,
if you do not fix the problem that caused the alarm to occur, the alarm will occur again, which
will force you to clear the alarm again. The overheat protection devices have long service lives
(approximately 100000 uses), but if they reach the end of their service lives, they will stop
operating. To maintain the performance of the RMX programmable power supply for a long
time, we request that you fully understand the Auto feature and only use it when necessary.
CF04 Memory Content Display Parameter
Sets whether to display the saved contents in the preset memory before recalling them. You can
use this CONFIG parameter if you forget what settings have been saved to a preset memory entry
or if you want to view the saved settings.
You can only specify this parameter when the RMX programmable power supply is being used
as a master unit.
CF05 CC Control Using a Vext or Rext
Selects whether constant current will be controlled by an external voltage (Vext) or an external
resistance (Rext) or an external resistance (Rext) via the J1 connector. This is set to “oFF” when
the panel settings are reset (CF00) and when a preset memory entry is recalled.
You can only specify this parameter when the RMX programmable power supply is being used
as a master unit.
Value Parameter Description
SAFE After the problem that caused an alarm to occur is fixed, the
output is not turned on automatically (factory default setting).
Auto After the problem that caused an alarm to occur is fixed, the
output is turned on automatically.
Value Parameter Description
oFF The saved contents of preset memory will be recalled without
displaying them.
on The saved contents of preset memory will be displayed and then
recalled after confirmation (factory default setting).
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