NATIONAL INSTRUMENTS NI PXIe-1075 Power Supply Shuttle User Guide
- June 16, 2024
- NATIONAL INSTRUMENTS
Table of Contents
USER GUIDE
NI PXIe-1075 Power Supply Shuttle
The NI PXIe-1075 power supply shuttle is a replacement part for the NI
PXIe-1075 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-1075 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 PXIe-1075 chassis (the unit being repaired)
❑ NI PXIe-1075 power supply shuttle
❑ Read Me First: Safety and Electromagnetic Compatibility
❑ NI PXIe-1075 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.
1 Universal AC Input
2 Push-Reset Circuit Breaker
3 Chassis Ground Screw
4 Air Filter Retainer Screws
5 Power Supply Shuttle ID Label
6 10 MHz REF OUT BNC
7 10 MHz REF IN BNC| 8 Remote Inhibit and Voltage Monitoring Connector
9 Inhibit Mode Selector Switch
10 Fan Speed Selector Switch
11 Power Supply Shuttle Mounting Screws (10x)
12 Power Supply Shuttle Handle (2x)
13 Power Supply Shuttle
14 Air Filter Retainer
---|---
Figure 1. Rear View of the NI PXIe-1075 Chassis
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 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 a 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-1075 chassis.
The NI PXIe-1075 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 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. With the chassis powered off,
disconnect the power cable from the power supply shuttle on the back of the
chassis. Identify the ten 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.
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. Install and tighten the ten 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.
Note The power supply shuttle will not power up unless connected to the backplane in a functional NI PXIe-1075 chassis.
Power Cord
For 100–120 VAC installation, use gray power cords rated for 125 V/15 A, using
the NI cable part numbers listed in the following table.
| Country | NI Part Number |
|---|---|
| North America | 763830-01 |
| Japan | 763841-01 |
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:
- 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).
- 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 120 VAC, 220 to 240 VAC
Operating voltage range 1…………………… 90 to 120 VAC, 200 to 264 VAC
Input current rating…………………………… 12 A, 6 A
Input frequency ……………………………….. 50/60 Hz
Over-current protection …………………….. 15 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 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. For more
information, refer to the Inhibit Mode Switch section of Chapter 2,
Installation and Configuration, in the NI PXIe-1075 User Manual.
DC Output
DC current capacity (I MP)
| Voltage | Maximum Current |
|---|---|
| +3.3 V | 61 A |
| +5 V | 56 A |
| +12 V | 62 A |
| –12 V | 4 A |
| 5 VAUX | 1.5 A |
Notes Maximum total power is 791 W.
The maximum power dissipated in the system slot should not exceed 140 W.
Backplane pin current capacity
Slot| +5 V| V (I/O)| +3.3 V| + 12 V| –12 V| 5
V AUX
---|---|---|---|---|---|---
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 PXI-1 Peripheral| 6 A| 5 A| 6 A| 1 A| 1 A| 0 A
Hybrid Peripheral Slot with PXI-5 (PXI Express) Peripheral| 0 A| 0 A| 3 A| 2
A| 0 A| 1 A
PXI-1 Peripheral Slot| 6 A| 11 A| 6 A| 1 A| 1 A| 0 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
Power supply shuttle MTTR ……………… Replacement in under 5 minutes
Where to Go for Support
The National Instruments Web site 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
from NI Application Engineers.
A Declaration of Conformity (DoC) is our claim of compliance with 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 obtain the DoC for your
product by visiting ni.com/certification. If
your product supports calibration, you can obtain the calibration certificate
for your product at ni.com/calibration.
National Instruments corporate headquarters is located at 11500 North Mopac
Expressway, Austin, Texas, 78759-3504.
National Instruments also has offices located around the world to help address
your support needs. For telephone support in the United States, create your
service request at ni.com/support and follow the
calling instructions or dial 512 795 8248. For telephone support outside the
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372539A-01 Jul08
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References
- Test and Measurement Systems, a part of Emerson - NI
- Product Certifications - NI
- Support - NI
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