© National Instruments | A-17
RMX Programmable Power Supplies User Manual
Overheat protection (OHP)............................... Turns the output off
1
, displays OHP, and lights
ALARM
Overheat protection2 (OHP2)........................... Turns the output off, displays OHP2, and lights
ALARM
Fan failure protection (FAN)............................ Turns the output off
1
, displays FAN, and lights
ALARM
Incorrect sensing
connection protection (SENSE)........................ Turns the output off, displays SENS, and lights
ALARM
Low AC input protection (AC-FAIL) .............. Turns the output off
1
, displays AC, and lights
ALARM
Shutdown (SD) ................................................. Turns the output off, displays SD, and lights
ALARM
Power limit (POWER LIMIT).......................... Blinks ALARM
Value (fixed)............................................. 1575.0 (approximately105% of the rated output
power)
Communication monitoring (WATCHDOG)... Turns the output off, displays DOG, and lights
ALARM
Signal Output
Monitor signal output
2
Voltage monitor (VMON) ........................ Selectable monitor voltage range: 0 to 5 V or
0 to 10 V
Setting accuracy................................ 2.5% of rtg
Current monitor (IMON) .......................... Selectable monitor voltage range: 0 to 5 V or
0 to 10 V
Setting accuracy................................ 2.5% of rtg
Status signal output
3
OUTON STATUS .................................... Turns on when the output is on
CV STATUS............................................. Turns on during CV operation
CC STATUS............................................. Turns on during CC operation
ALM STATUS ......................................... Turns on when an alarm has been activated
PWR ON STATUS................................... Turns on when the power is turned on
1
Use the CONFIG settings to specify what happens when a protection function is activated and the output
is turned off. You can select to turn the output on automatically when the problem that caused the alarm
is fixed (CF03: Auto) or to leave the output turned off when the problem that caused the alarm is fixed
(CF03:SAFE). The specified protection operation is the same for the OHP, FAN, and AC-FAIL alarms.
You cannot make separate settings for the OHP, FAN, and AC-FAIL alarms.
2
J1 connector on the rear panel.
3
J2 connector on the rear panel. Photocoupler open collector output; maximum voltage 30 V, maximum
current (sink) 8 mA; isolated from the output and control circuits; status commons are floating (withstand
voltage of less than or equal to 60 V); and status signals are not mutually isolated.
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