National Instruments RMX-4120 User Manual

Also see for RMX-4120: Safety & installation instructions

Contents

1-6 | ni.comChapter 1 Installation and PreparationTurning the Power OnTurning the POWER Switch OnCaution Risk of electric shock. Regardless of whether load cables are connected tothe output terminals, be sure to attach the OUTPUT terminal cover before turning thePOWER switch on.You can use the CONFIG settings to set how the RMX programmable power suppliesstart when you turn the POWER switch on. Depending on the setting, the output maybe turned on automatically when the POWER switch is turned on. If you connect aload without setting OVP and OCP to appropriate values, the load may be damagedif the output is programmed to automatically turn on when the power is switched on.When you turn the POWER switch on for the first time after purchase, the RMX programmablepower supply will be programmed with its factory default settings. Refer to Chapter 2, FactoryDefault Settings (Initialization), for more information about these settings. Each subsequenttime you turn the power supply on, it starts with the panel settings (excluding the output on/offsetting) that were in use immediately before the POWER switch was turned off.You can use the CONFIG setting CF02 to select how the RMX programmable power supplystarts when the POWER switch is turned on. Refer to Chapter 2, CF02 Power-on StatusParameter, for more information about this setting.1. Check that the power cord is connected correctly.2. Check that the OUTPUT terminal cover is attached. Refer to the Attaching the OutputTerminal Cover section for more information about attaching the terminal cover. When theproduct is shipped from the factory, the OUTPUT terminal cover is not attached.3. Turn the POWER switch on. All the LEDs light, and then the voltmeter and the ammeterdisplay the following sequence of information: the rated voltage and rated current, thefirmware version number, the build number, and then the selected interface. Each item isdisplayed for approximately 1 second. After a few seconds, the RMX programmable powersupply enters the operation standby state during which the output value is displayed.