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USER GUIDE
NI PXIe-1082 Power Supply
Shuttle
The NI PXIe-1082 power supply shuttle is a replacement part for the
NI PXIe-1082 chassis.
Caution This power supply is not compatible with any other National Instruments chassis.
Introduction
To minimize downtime caused by a power-supply failure, the
NI PXIe-1082 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
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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 PXIe-1082 chassis (the unit being repaired)
❑ NI PXIe-1082 power supply shuttle
❑ Read Me First: Safety and Electromagnetic Compatibility
❑ NI PXIe-1082 User Manual (provided with the chassis; also available
at
ni.com/support)
❑ #1 Phillips screwdriver
NI PXIe-1082 Power Supply Shuttle User Guide 2 ni.com
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Description
4
Refer to Figure 1 to locate user-accessible components on the power supply
shuttle.
1211 732 910
14
13
1 Power Supply Shuttle
2 Push-Reset Circuit Breaker
3 Universal AC Input
4 Chassis Ground Screw
510 MHz REF OUT BNC
6 10 MHz REF IN BNC
7 Remote Inhibit and Voltage Monitoring Connector
Figure 1. Rear View of the NI PXIe-1082 Chassis
1
865
8 Air Filter Retainer
9 Air Filter Retainer Screw
10 Power Supply Shuttle ID Label
11 Fan Speed Selector Switch
12 Inhibit Mode Selector Switch
13 Power Supply Shuttle Handle (2x)
14 Power Supply Shuttle Mounting Screws (8x)
© National Instruments Corporation 3 NI PXIe-1082 Power Supply Shuttle User Guide
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Installation and Maintenance
The information in this section is for qualified service personnel only. Read
the Read Me First: Safety and Electromagnetic Compatibility document
included with your kit before using the power supply shuttle.
Caution Many components within the NI PXIe-1082 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 PXIe-1082 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 PXIe-1082
chassis. The NI PXIe-1082 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 PXIe-1082 User
Manual; additionally, you can download a softcopy from
support
.
ni.com/
Removal
Installation
Before attempting to replace the power supply shuttle, verify that there is
adequate clearance behind the chassis. With the chassis powered off,
disconnect the power cable from the power supply shuttle on the back of
the chassis. Identify the eight mounting screws that attach the power supply
shuttle to the chassis. Refer to Figure 1 for the mounting screw locations.
Using a Phillips screwdriver, remove the mounting screws. Pull on the
two rear handles of the power supply shuttle to remove it from the back of
the chassis.
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. Install and tighten the eight mounting
screws with a Phillips screwdriver.
NI PXIe-1082 Power Supply Shuttle User Guide 4 ni.com
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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
(IEC 60320) 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:
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).
Specifications
AC Input
2. Attach the opposite end of the wire to permanent earth ground using
toothed washers or a toothed lug.
Input voltage range................................. 100 to 240 VAC
Operating voltage range
Input frequency ...................................... 50/60 Hz
Operating frequency range
Input current rating................................. 8–4 A
Over-current protection.......................... 10 A circuit breaker
1
........................ 90 to 264 VAC
1
................... 47 to 63 Hz
1
The operating range is guaranteed by design.
© National Instruments Corporation 5 NI PXIe-1082 Power Supply Shuttle User Guide
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DC Output
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
front-panel power switch causes
the internal chassis power supply
to provide DC power to the
CompactPCI/PXI Express
backplane. You also can use the
rear-panel D-SUB 9-pin connector
and power mode switch to control
the internal chassis power supply.
DC current capacity (IMP)
Vo lt ag e Maximum Current
+3.3 V 32 A
+5 V 34 A
+12 V 32 A
–12 V 2.0 A
5 V
AUX
Notes Maximum total power is 507 W.
2.0 A
The maximum power dissipated in the system slot should not exceed 140 W.
The maximum power dissipated in a peripheral slot should not exceed 38 W.
NI PXIe-1082 Power Supply Shuttle User Guide 6 ni.com
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Backplane pin current capacity
Slot +5 V V (I/O) +3.3 V +12 V –12 V 5 V
System Controller Slot 9 A 0 A 9 A 11 A 0 A 1 A
System Timing Slot 0 A 0 A 3 A 2 A 0 A 1 A
Hybrid Peripheral Slot with
6 A 5 A 6 A 1 A 1 A 0 A
PXI-1 Peripheral
Hybrid Peripheral Slot with
0 A 0 A 3 A 2 A 0 A 1 A
PXI-5 Peripheral
PXI-1 Peripheral Slot 6 A 11 A 6 A 1 A 1 A 0 A
Load regulation
Vo lt ag e Load Regulation
+3.3 V <5%
+12 V <5%
+5 V <5%
AUX
–12 V <5%
Maximum ripple and noise (20 MHz bandwidth)
Vo lt ag e Maximum Ripple and Noise
+3.3 V 50 mV
+12 V 50 mV
+5 V 50 mV
–12 V 50 mV
pp
pp
pp
pp
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
Power supply shuttle MTTR .................. Replacement in under 5 minutes
© National Instruments Corporation 7 NI PXIe-1082 Power Supply Shuttle User Guide
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Refer to the Terms of Use section on ni.com/legal for more information about National
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© 2009 National Instruments Corporation. All rights reserved.
373026A-01 Nov09
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