National Instruments RMX-4120 User Manual page 123

Overheat protection (OHP)............................... Turns the output off
Overheat protection2 (OHP2)........................... Turns the output off, displays OHP2, and lights
Fan failure protection (FAN) ............................ Turns the output off
Incorrect sensing
connection protection (SENSE)........................ Turns the output off, displays SENS, and lights
Low AC input protection (AC-FAIL) .............. Turns the output off
Shutdown (SD) ....................................................Turns the output off, displays SD, and lights
Power limit (POWER LIMIT).......................... Blinks ALARM
Value (fixed) ............................................... 787.5 (approximately 105% of the rated output
Communication monitoring (WATCHDOG)... Turns the output off, displays DOG, and lights
Signal Output
Monitor signal output
Voltage monitor (VMON) ........................ Selectable monitor voltage range: 0 to 5 V or
Setting accuracy................................ 2.5% of rtg
Current monitor (IMON) .......................... Selectable monitor voltage range: 0 to 5 V or
Setting accuracy................................ 2.5% of rtg
Status signal output
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.
2
3
RMX Programmable Power Supplies User Manual
ALARM
ALARM
ALARM
ALARM
ALARM
ALARM
power)
ALARM
0 to 10 V
0 to 10 V
1
, displays OHP, and lights
1 , displays FAN, and lights
1
, displays AC, and lights
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