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Figure 2. System Level Connection, Typical

1

2

Safety Interlock Connector

Test Fixture Enclosure

Operator Access Door

Mechanical Detection Switches

Mechanical detection switch is actuated

by operator access point

3

4

1. Safety Interlock Input
2. Safety Interlock Ground

3. Safety Interlock Pass Thru - Input
4. Safety Interlock Pass Thru - Ground

Related Information

Fore more information about the Safety Interlock, refer to the NI DC Power Supplies and
SMUs Help.
Testing the Safety Interlock

 on page 13

Mechanical Detection Switch Recommendations

Use high-reliability, fail-safe, normally open mechanical detection switches on all access
points to the test fixture enclosure.

Use two normally open switches wired in series so that a single switch failure does not
compromise safety protections.

Isolate switches so the operator cannot trigger or bypass the switches without the use of a
tool.

Ensure the switches' certifications meet your test application requirements. NI
recommends UL-certified safety switches to ensure reliability.

Install the switches in accordance with the switch manufacturer specifications.

Test the switches periodically to ensure proper implementation and reliability.

Safety Guidelines for System Operation

Caution

 

Hazardous voltages of up to the maximum voltage of the PXIe-4135 may

appear at the output terminals if the safety interlock terminal is closed. Open the
safety interlock terminal when the output connections are accessible. With the safety
interlock terminal open, the output voltage level/limit is limited to ±40 V DC, and

PXIe-4135 Getting Started Guide

  | 

© National Instruments

  | 

7

Summary of Contents for PXIe-4135

Page 1: ...the product is damaged return it to NI for repair Contents Electromagnetic Compatibility Guidelines 2 Safety Guidelines for Hazardous Voltages 2 Verifying the System Requirements 2 Unpacking the Kit 3...

Page 2: ...sories connected to the LO Sense LO Output HI and Sense HI connectors Only twisted shielded pair cable i e Belden 83321E should be used to connect the signals of the LO Sense LO connector Any compatib...

Page 3: ...unding strap or by holding a grounded object such as your computer chassis 1 Touch the antistatic package to a metal part of the computer chassis 2 Remove the device from the package and inspect the d...

Page 4: ...tems not included in your device kit that you need to operate the PXIe 4135 Your application may require additional items not included in your kit to install or operate your device Required Items A PX...

Page 5: ...ree 2 Indoor use only Note Refer to the device specifications on ni com manuals for complete specifications Installing the Software You must be an Administrator to install NI software on your computer...

Page 6: ...that it is properly connected to safety ground Ensure that the PXIe 4135 is properly secured to the chassis using the two front panel mounting screws Double insulate all electrical connections that a...

Page 7: ...ed in series so that a single switch failure does not compromise safety protections Isolate switches so the operator cannot trigger or bypass the switches without the use of a tool Ensure the switches...

Page 8: ...talling the PXIe 4135 Caution To prevent damage to the PXIe 4135 caused by ESD or contamination handle the module using the edges or the metal bracket 1 Ensure the AC power source is connected to the...

Page 9: ...e 11 Cover all empty slots using EMC filler panels or fill using slot blockers to maximize cooling air flow depending on your application 12 Prepare the LO Sense LO connector assembly Caution To ensur...

Page 10: ...ngth for the safety interlock cable is 7 5 mm 0 295 in minimum and 10 mm 0 394 in absolute maximum The acceptable AWG range for the safety interlock cable is 16 24 b Use an insulation strip tool to ex...

Page 11: ...l ACCESS VOLTAGE LO HI GUARD GUARD INT PASS THRU SENSE LO SENSE HI SAFETY INTERLOCK 3 3 V MAX OUTPUT 200 V 1 A 3 A Pulse MAX 250 V MAX to PXIe 4135 Precision System SMU A C D E B K M J L F H I G PXIe...

Page 12: ...ries Table 2 PXIe 4135 Accessories Accessory Manufacturer Part Number Additional Connector Kit with Interlock Connector for PXIe 4135 SMU NI 784484 01 Safety Interlock Connector Phoenix Contact 179029...

Page 13: ...sure that the safety interlock input on the test fixture is closed 3 Set the niDCPower Output Function property or NIDCPOWER_OUTPUT_FUNCTION attribute to DC Voltage for the PXIe 4135 4 Set the voltage...

Page 14: ...tatus Indicator is red and that a hazardous voltage error message appears 11 On the error message dialog click OK to prompt the PXIe 4135 to attempt to clear the error and re initialize the session to...

Page 15: ...quisition and measurement options using LabVIEW VIs or LabWindows CVI functions C or LabWindows CVI Available at Program Files IVI Foundation IVI Drivers NI DCPower Microsoft Visual C C NI DCPower doe...

Page 16: ...st with the PXI Express power rails a hardware module or the LED 1 Caution Apply external signals only while the PXIe 4135 is powered on Applying external signals while the module is powered off may c...

Page 17: ...te is your complete resource for technical support At ni com support you have access to everything from troubleshooting and application development self help resources to email and phone assistance fr...

Page 18: ...oducts technology refer to the appropriate location Help Patents in your software the patents txt file on your media or the National Instruments Patent Notice at ni com patents You can find informatio...

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