National Instruments RMX-4120 Safety & Installation Instructions Download Page 6

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RMX Programmable Power Supplies Safety Information & Installation Guide

Turning the Power On

Turning the POWER Switch On

Caution

Risk of electric shock. Regardless of whether load cables are connected to 

the output terminals, be sure to attach the OUTPUT terminal cover before turning the 
POWER switch on.

Load Cables

Caution

Risk of fire. Use load cables whose capacity is adequate for the RMX 

programmable power supply’s rated output current. The output connector and its 
surrounding area become hot. Use cables whose covers have heat resistance at 85 °C 
and higher. 

Caution

Risk of electric shock. Use the cable which has higher withstanding voltage 

than the specified insulation voltage of the product to secure the double insulation or 
reinforced insulation.

Connecting to the Output Terminals

Caution

Risk of electric shock. Turn the POWER switch off before you touch the 

OUTPUT terminals. Even if you turn the output off or turn the POWER switch off, 
if the bleeder on/off setting (CF11) is set to “OFF,” the voltage that was present when 
the output was on will remain at the output terminals. Turn the bleeder circuit on 
before you touch the output terminals. Regardless of whether load cables are 
connected to the output terminals, be sure to attach the OUTPUT terminal cover 
before turning the POWER switch on. Confirm that the voltage between any output 
terminal and ground is lower than the isolation voltage of the RMX programmable 
power supply.

Figure 4.  

RMX-4125 Output Terminal

- (negative) terminal

+ (positive) terminal

Chassis terminal

Summary of Contents for RMX-4120

Page 1: ...supplies Safety Guidelines Indicates general danger warning or caution When this symbol is marked on the product see the relevant section in the operation manual Indicates a location whose surface can...

Page 2: ...2 4123 750 W Models Necessary Cable North America Extra Hard Usage Cord min 300 V 60 C 14 AWG 3 Conductor cord 3 m or less with a NEMA 5 15P to C14 Europe HAR Marked min 300 V 60 C 2 5mm2 3 Conductor...

Page 3: ...e switchboard In an emergency turn off the switchboard breaker to disconnect the product from the AC power line Necessary Cable Vinyl cabtire cable VCTF Nominal cross sectional area 5 5 mm2 3 core Fin...

Page 4: ...nal to the GND wire Figure 2 Attaching the Crimping Terminal 4 Connect the power cord and the included INPUT terminal cover to the AC INPUT terminal on the rear panel Be sure to connect the AC INPUT L...

Page 5: ...ect Incorrect Incorrect The stripped wire is touching the chassis The wire strands are touching the chassis INPUT terminal cover INPUT terminal cover INPUT terminal cover AC INPUT terminal L Black or...

Page 6: ...fied insulation voltage of the product to secure the double insulation or reinforced insulation Connecting to the Output Terminals Caution Risk of electric shock Turn the POWER switch off before you t...

Page 7: ...re to the chassis terminal Use the screw on the output terminal to connect the wire to the output terminal Figure 5 RMX 4120 4121 4124 4125 Figure 6 RMX 4122 4123 4126 4127 3 Attach crimping terminals...

Page 8: ...for RMX 4122 4123 4126 4127 Note If you do not connect load cables in the correct orientation you will not be able to attach the OUTPUT terminal cover Spring washer Washer Nut Bolt M8 Crimping termin...

Page 9: ...bles that are between 10 mm and 18 mm in diameter Put the top and bottom halves of the OUTPUT terminal cover together so that the hole diameter is large 1 Remove the screw that is attached next to the...

Page 10: ...ove Align the protrusion of the top half of the cover with the top section of the protrusion of the bottom half Bottom half of the cover For thick load cables Cover hole diameter 10 mm to 18 mm Cover...

Page 11: ...category II Operating temperature 0 to 50 C 32 to 122 F Operating humidity 20 to 85 rh no condensation Altitude Up to 2 000 m Pollution degree 2 RMX 4124 4125 4126 4127 AC Input Nominal input rating 1...

Page 12: ...ass A emissions Basic immunity EN 55011 CISPR 11 Group 1 Class A emissions AS NZS CISPR 11 Group 1 Class A emissions FCC 47 CFR Part 15B Class A emissions ICES 001 Class A emissions Note In the United...

Page 13: ...ible manner NI recognizes that eliminating certain hazardous substances from our products is beneficial to the environment and to NI customers For additional environmental information refer to the Min...

Page 14: ...th the Council of the European Communities using the manufacturer s declaration of conformity This system affords the user protection for electromagnetic compatibility EMC and product safety You can o...

Page 15: ...nts You can find information about end user license agreements EULAs and third party legal notices in the readme file for your NI product Refer to the Export Compliance Information at ni com legal exp...

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