NATIONAL INSTRUMENTS NI PXI-1042 Series Power Supply Shuttle User Guide

: June 16, 2024
: NATIONAL INSTRUMENTS

Table of Contents

NATIONAL INSTRUMENTS NI PXI-1042 Series Power Supply Shuttle
Product Information
Introduction And Unpacking
What You Need to Get Started
Description
Installation and Maintenance
Specifications
Compliance and Certifications
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)
1 Phillips screwdriver

NATIONAL INSTRUMENTS NI PXI-1042 Series Power Supply Shuttle

Product Information

The NI PXI-1042 Series power supply shuttle is a replacement part for the NI PXI-1042 Series chassis. It is designed to provide power to the chassis and ensure proper functioning of the system.

Specifications

Circuit Breaker
Universal AC Inlet
Chassis Grounding Screw
Fan Speed Selector Switch
PXI_CLK10 OUT BNC
Remote Inhibit and Voltage Monitoring Connector
PXI_CLK10 IN BNC
Filter Cover
Filter Retainer Screw
Mounting Screws (8X)

The NI PXI-1042 Series power supply shuttle is a replacement part for the NI PXI-1042 Series chassis.

Introduction And Unpacking

Introduction

To minimize downtime caused by a power-supply failure, the NI PXI-1042 Series chassis has a modular power supply shuttle. This power supply shuttle includes the chassis power supply, cooling fans, and fan-control circuitry. Key features of the power supply shuttle include:

Universal AC input with automatic voltage and frequency ranging
Over-current protection via push-reset circuit breaker
Remote power monitoring and inhibit via a rear-panel connector
Temperature-sensing module that can adjust fan speed based on air-intake temperature to minimize audible noise
Circuitry to control a front-panel LED that indicates power supply failure

Unpacking

Carefully inspect the shipping container and the power supply shuttle for damage. Check for visible damage to the metal work. Check to make sure all handles, hardware, and switches are undamaged. Visually inspect the inside of the shuttle for any possible damage, debris, or detached components. If damage appears to have been caused during shipment, file a claim with the carrier. Retain the packing material for possible inspection and/or reshipment.

What You Need to Get Started

NI PXI-1042 Series chassis (the unit being repaired)
NI PXI-1042 Series power supply shuttle
Read Me First: Safety and Radio-Frequency Interference
NI PXI-1042 User Manual (provided with the chassis; also available at ni.com/support)
1 Phillips screwdriver

Description

Refer to Figure 1 to locate user-accessible components on the power supply shuttle.

Figure 1. NI PXI-1042 Series Power Supply Shuttle Rear Panel

Circuit Breaker
Universal AC Inlet
Chassis Grounding Screw
Fan Speed Selector Switch
PXI_CLK10 OUT BNC
Remote Inhibit and Voltage Monitoring Connector
PXI_CLK10 IN BNC
Filter Cover
Filter Retainer Screw
Mounting Screws (8X)

Installation and Maintenance

The information in this section is for qualified service personnel only. Read the Read Me First: Safety and Radio-Frequency Interference document included with your kit before using the power supply shuttle.

Caution: Many components within the NI PXI-1042 Series chassis under repair are susceptible to static discharge damage. Service the chassis only in a static-free environment. Observe standard handling precautions for static- sensitive devices while servicing the chassis. Always wear a grounded wrist strap, or equivalent, while servicing the chassis.

Caution: Always disconnect the AC power cable before cleaning or servicing the chassis.
Caution: Never connect the AC power cable to the power supply shuttle until you install it in an NI PXI-1042 Series chassis. Do not use, test, or configure the power supply shuttle outside of a chassis.

The power supply shuttle is a replacement part for the NI PXI-1042 Series chassis. The NI PXI-1042 User Manual contains all of the most up-to-date chassis service procedures, including removal and replacement of power supply shuttles. The chassis includes a hardcopy of the NI PXI-1042 User Manual; additionally, you can download a softcopy from ni.com/ support.

Removal

Before attempting to replace the power supply shuttle, verify that there is adequate clearance behind the chassis. Set the power switch on the front panel to the Off (nonrecessed) position and disconnect the power cable from the power supply shuttle on the back of the chassis. Identify the eight captive mounting screws that attach the power supply shuttle to the chassis. Refer to Figure 1 for the mounting screw locations. Using a Phillips screwdriver, loosen the captive mounting screws. Pull on the two rear handles of the power supply shuttle to remove it from the back of the chassis.

Installation

Ensure that there is no visible damage to the new power supply shuttle. Verify that the housing and connector on the new power supply shuttle have no foreign material inside. Remove the protective cap on the PXI_CLK10 connector. Install the new power supply shuttle into the opening on the rear of the chassis. Tighten the eight captive mounting screws with a Phillips screwdriver.

Configuration

The fan-speed selector switch is on the rear panel of the power supply shuttle. Refer to Figure 1 to locate the fan-speed selector. Select HIGH for maximum cooling performance (recommended) or AUTO for quieter operation. When set to AUTO, air-intake temperature determines the fan speed.

Connecting Safety Ground

Caution: The power supply shuttle is designed with a three-position NEMA 5-15 jack that connects the ground line to the chassis ground. To minimize shock hazard, make sure the electrical power outlet you use to power the chassis has an appropriate earth safety ground.

If your power outlet does not have an appropriate ground connection, you must connect the premise safety ground to the chassis grounding screw. Refer to Figure 1 to locate the chassis grounding screw. To connect the safety ground, complete the following steps:

Connect a 16 AWG (1.3 mm) wire to the chassis grounding screw using a grounding lug. The wire must have green insulation with a yellow stripe or must be non-insulated (bare).
Attach the opposite end of the wire to permanent earth ground using toothed washers or a toothed lug.

Specifications

AC Input

Input voltage range ……………………………100 to 240 VAC
Operating voltage range1 ……………………90 to 264 VAC
Input frequency …………………………………50/60 Hz
Operating frequency range1 ………………..47 to 63 Hz
Input current rating ……………………………8 A
Over-current protection ……………………..10 A circuit breaker
Line regulation
- 3.3 V…………………………………………<±0.2%
- 5 V……………………………………………<±0.1%
- ±12 V………………………………………..<±0.1%
Efficiency ……………………………………….. 70% typical
Power disconnect …………………………….. The AC power cable provides main power disconnect. The chassis front-panel power switch causes the power supply to provide DC power to the CompactPCI/PXI backplane.

DC Output

DC current capacity (IMP)

Voltage

| NI PXI-1042| NI PXI-1042Q
---|---|---
0–50 °C| 0–55 °C| 0–40 °C
+3.3 V| 20 A| 18 A| 20 A
+5 V| 29 A| 25 A| 29 A
+12 V Peripheral slots| 3.5 A| 3.5 A| 3.5 A
+12 V System slot| 0.5 A| 0.5 A| 0.5 A
–12 V| 2 A| 2 A| 2 A

Load regulation

Voltage	Load Regulation
+3.3 V	<5%
+12 V	<5%
+5 V	<5%
–12 V	<5%

Maximum ripple and noise (20 MHz bandwidth)

Voltage	Maximum Ripple and Noise
+3.3 V	50 mVpp
+12 V	120 mVpp
+5 V	50 mVpp
–12 V	120 mVpp

Over-current protection ……………………..All outputs protected from short circuit and overload with automatic recovery
Over-voltage protection
- 3.3 V and 5 V……………………………..Clamped at 20 to 30% above nominal output voltage
- +12 V and –12 V ………………………..Clamped at 26 to 29 V difference between +12 and –12 V outputs
- Power supply shuttle MTTR……………….Replacement in under 5 minutes

Compliance and Certifications

Safety

This product meets the requirements of the following standards of safety for electrical equipment for measurement, control, and laboratory use:

IEC 61010-1, EN 61010-1
UL 61010-1, CSA 61010-1

Note

For UL and other safety certifications, refer to the product label or the Online Product Certification section.

Electromagnetic Compatibility

This product meets the requirements of the following EMC standards for electrical equipment for measurement, control, and laboratory use:

EN 61326 (IEC 61326): Class 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

For the standards applied to assess the EMC of this product, refer to the Online Product Certification section.
For EMC compliance, operate this product according to the documentation.

Online Product Certification

Refer to the product Declaration of Conformity (DoC) for additional regulatory compliance information. To obtain product certifications and the DoC for this product, visit ni.com/certification, search by model number or product line, and click the appropriate link in the Certification column.

CE Compliance

This product meets the essential requirements of applicable European Directives as follows:

2006/95/EC; Low-Voltage Directive (safety)
2004/108/EC; Electromagnetic Compatibility Directive (EMC)

Environmental Management

National Instruments is committed to designing and manufacturing products in an environmentally responsible manner. NI recognizes that eliminating certain hazardous substances from our products is beneficial not only to the environment but also to NI customers.

For additional environmental information, refer to the NI and the Environment Web page at ni.com/environment. This page contains the environmental regulations and directives with which NI complies, as well as other environmental information not included in this document.

Waste Electrical and Electronic Equipment (WEEE)

EU Customers: At the end of their life cycle, all products must be sent to a WEEE recycling center. For more information about WEEE recycling centers and National Instruments WEEE initiatives, visit ni.com/environment/weee.htm.

RoHS

National Instruments (RoHS)

National Instruments RoHS ni.com/environment/rohs_china
(For information about China RoHS compliance, go to ni.com/environment/rohs_china.)

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Refer to the Terms of Use section on ni.com/legal for more information about National Instruments trademarks. Other product and company names mentioned herein are trademarks or trade names of their respective companies. For patents covering National Instruments products/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.