NI PXI-1045 Power Supply Shuttle User Guide
Contents
1. 3 3 V lt 0 5 12 V lt 0 5 5 V lt 0 5 12 V lt 0 5 National Instruments Corporation 5 NI PXI 1045 Power Supply Shuttle User Guide Maximum ripple and noise 20 MHz bandwidth Voltage Maximum Ripple and Noise 3 3 V 50 mV pp 12 V 120 mV pp 5 V 50 mV pp 12 V 120 mV pp Over current protection eee All outputs protected from short circuit and overload with automatic recovery when the short or overload is removed Over voltage protection 140 to 150 above nominal output voltage E EEEE 120 to 130 above nominal output voltage 5 V 12 V 12 V Power supply shuttle MTTR Replacement in under 5 minutes 1 To reset over voltage protection remove the MAINS for 30 seconds and then power up NI PXI 1045 Power Supply Shuttle User Guide ni com National Instruments NI and ni com are trademarks of National Instruments Corporation Product and company names mentioned herein are trademarks or trade names of their respective companies For patents covering National Instruments products refer to the appropriate location Help Patents in your software the patents txt file on your CD or ni com patents 2003 National Instruments Corp All rights reserved 323693A 01 Sep032. 1045 Power Supply Shuttle you need the following items Q PXI 1045 chassis the unit being repaired Q PXI 1045 power supply shuttle UO Read Me First Safety and Radio Frequency Interference Q NI PXI 1045 User Manual provided with the chassis also available at ni com support D Number 1 Phillips screwdriver Description Refer to Figure 1 to locate user accessible components on the power supply shuttle A REE a O R ood S y LI a 1 Circuit Breaker 7 Remote Inhibit and Voltage Monitoring Connector 2 Chassis Ground Screw 8 Fan Speed Selector Switch 3 Filter Cover 9 Power Supply Shuttle 4 Filter Retainer Screws 10 Mounting Screw 5 10 MHz REF OUT BNC 11 Universal AC Inlet 6 10 MHz REF IN BNC Figure 1 PXI 1045 Power Supply Shuttle Rear Panel NI PXI 1045 Power Supply Shuttle User Guide 2 ni com 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 UN Caution Many components within the PXI 1045 chassis under repair are sus
3. A USER GUIDE NI PXI 1045 Power Supply Shuttle This document explains the installation and maintenance of the NI PXI 1045 power supply shuttle The NI PXI 1045 power supply shuttle is a replacement part for the PXI 1045 chassis Introduction To minimize downtime caused by a power supply failure the PXI 1045 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 e Universal AC input with automatic voltage and frequency ranging e Over current protection through push reset circuit breaker e Remote voltage monitoring and inhibit through a rear panel connector e Temperature sensing module that can adjust fan speed based on air intake temperature to minimize audible noise e 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 Qr NATIONAL p INSTRUMENTS What You Need to Get Started To set up and use the NI PXI
4. 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 10 MHz REF D sub connector that interfaces with the chassis backplane Install the new power supply shuttle into the opening on the rear of the chassis Replace and tighten the ten mounting screws with a Phillips screwdriver maximum torque of 5 in lbs National Instruments Corporation 3 NI PXI 1045 Power Supply Shuttle User Guide Configuration Connecting Safety 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 Ground UN 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 Specifications AC Input 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 to locate the chassis grounding screw To connect the safety ground complete the follo
5. ceptible 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 gt gt Caution Never connect the AC power cable to the power supply shuttle until you install it in a PXI 1045 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 PXI 1045 chassis The MI PXI 1045 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 1045 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 10 mounting screws that attach the power supply shuttle to the chassis Refer to Figure 1 for the mounting screw locations Using a number 1 Phillips screwdriver remove the screws Pull the two rear handles of the power supply shuttle to remove it from the
6. wing steps 1 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 noninsulated bare 2 Attach the opposite end of the wire to permanent earth ground using toothed washers or a toothed lug Input voltage range n e e 100 240 VAC Operating voltage range oo 90 264 VAC Input frequency eee eects eeeeeees 50 60 Hz Operating frequency range ee 47 63 Hz Input current rating seese 10 5 A Over current protection cee 12 A circuit breaker The operating range is guaranteed by design NI PXI 1045 Power Supply Shuttle User Guide 4 ni com Line regulation SiS UN egnan EEEE R a lt t1 OV AEE lt t1 I2 NVocrinn inean Ss lt t1 EFFICIENCY sistens ienien iiaa 70 minimum Power disconnect sssseseeseseesseeesereesereee The AC power cable provides main power disconnect Depressing the front panel power switch controls the internal chassis power supply that provides DC power to the CompactPCI PXI backplane You also can use the rear panel 9 pin D sub connector to control the internal chassis power supply DC Output DC current capacity Imp Voltage 0 45 C 45 50 C 50 55 C 3 3 V 40 A 37A 32A 5 V 59 A 55 A 48 A 12 V 8 5 A 8 5 A 8A Peripheral slots 12 V 05A 05A 0 5 A System slot 12 V 4 5 A 45A 45A Load regulation Voltage Load Regulation
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