National Instruments RMX-4120 User Manual

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Contents
Chapter 1
Installation and Preparation
Attaching the Connector Cover ........................................................................................ 1-1
Connecting the Power Cord.............................................................................................. 1-1
RMX-4120/4121/4122/4123 (750 W Models)......................................................... 1-2
Necessary Cable ............................................................................................... 1-2
RMX-4124/4125/4126/4127 (1500 W Models)....................................................... 1-2
Necessary Cable ............................................................................................... 1-3
Switchboard Breaker Requirements ................................................................. 1-3
Connection Procedure............................................................................................... 1-4
Turning the Power On ...................................................................................................... 1-6
Turning the POWER Switch On .............................................................................. 1-6
Inrush Current................................................................................................... 1-7
Turning the POWER Switch Off.............................................................................. 1-7
Rack Mounting ................................................................................................................. 1-8
Load Considerations ......................................................................................................... 1-8
Loads with Peak Current or Pulse-Shaped Current.................................................. 1-8
Loads that Generate Reverse Current to the Power Supply ..................................... 1-9
Loads with Accumulated Energy ............................................................................. 1-9
Load Cables ...................................................................................................................... 1-10
Protecting Against Noise .......................................................................................... 1-11
Cabling Considerations When Using Remote Sensing ............................................ 1-11
Connecting to the Output Terminals ................................................................................ 1-12
Attaching the Output Terminal Cover ...................................................................... 1-15
Sensing.............................................................................................................................. 1-17
Local Sensing ........................................................................................................... 1-19
Remote Sensing ........................................................................................................ 1-19
Connecting an Electrolytic Capacitor Across the Load.................................... 1-22
Inserting a Mechanical Switch Between the RMX Programmable
Power Supply and the Load.............................................................................. 1-22
Accessories ....................................................................................................................... 1-23
Parallel Operation Signal Cable ............................................................................... 1-23
Chapter 2
Basic Functions
Measured Value Display and Setting Display.................................................................. 2-1
Measured Value Display .......................................................................................... 2-1
Power Display................................................................................................... 2-1
Setting Display ......................................................................................................... 2-2
Overvoltage Protection and Overcurrent Protection Setting Display....................... 2-2
System Configuration Setting Display ..................................................................... 2-2
Panel Operations............................................................................................................... 2-3

National Instruments RMX-4120 Specifications

General

Brand	National Instruments
Model	RMX-4120
Category	Power Supply
Language	English