# PXI-2512 Specifications

Version:

Caution

The protection provided by the PXI-2512 can be impaired if it is used in a manner not described in this document.

## Definitions

Warranted specifications describe the performance of a model under stated operating conditions and are covered by the model warranty.

The following characteristic specifications describe values that are relevant to the use of the model under stated operating conditions but are not covered by the model warranty.

• Typical specifications describe the performance met by a majority of models.
• Nominal specifications describe an attribute that is based on design, conformance testing, or supplemental testing.

Specifications are Warranted unless otherwise noted.

## Conditions

Specifications are valid under the following conditions unless otherwise noted.

• The PXI/PXIe chassis fan speed is set to High.
• The fan filters are clean.
• The empty slots contain filler panels.

For more information, refer to the Maintain Forced-Air Cooling Note to Users document available at ni.com/manuals.

## Topology

 Topologies Independent

## Input[1]

All input specifications are DC, ACrms, or a combination unless otherwise specified.

Caution

Steady state voltages applied to the PXI-2512 between any two I/O connector pins in excess of the maximum switching voltage specification may damage this module.

Caution

This module is rated for Measurement Category I and intended to carry signal voltages no greater than 30 Vrms/42 Vpk/50 VDC. Do not use this module for connection to signals or for measurements within Categories II, III, or IV. Do not connect to MAINs supply circuits (for example, wall outlets) of 115 or 230 VAC.

 Maximum switching voltage 50 VDC, 30 V ACrms, CAT I[2] Maximum continuous current 10 A (per channel or common, switching or carry) Maximum pulsed current 50 A (for 600 μs max) Maximum switching power (per channel)[3] 500 W

Use the following equation to determine the maximum possible pulse width (seconds) for a given maximum inrush current “peak” amplitude (A) and steady state current (A).

$\mathrm{MaxPulseWidth}=\frac{1.512-0.01\cdot \left({I}_{\mathrm{SteadyState}}{\right)}^{2}}{\left({I}_{\mathrm{PeakInrush}}{\right)}^{2}}$
 DC path resistance 16 mΩ, typical 35 mΩ, maximum Bandwidth (50 Ω system) >800 kHz, typical

## Overcurrent Detection[4]

 Overcurrent detection limit 10.5 A, typical Overcurrent detection delay 20 ms

## Overtemperature Detection[5][6]

To help protect against fault conditions, the PXI-2512 incorporates circuitry to detect overtemperature conditions.

The Switching Current Waveform graph figure indicates where on the inrush waveform you can find the parameters necessary for determining maximum cycle rate.

Figure 1. Switching Current Waveform
Figure 2. Maximum Cycle Rate
Figure 3. Maximum Cycle Rate Derating Factor by Pulse Width

### Determining the Maximum Cycle Rate

Complete the following steps using the previous figures to determine the maximum cycle rate at which a channel can be switched when the peak impulse current value and duration are known:
1. Using the Maximum Cycle Rate figure, choose the plot line that meets or exceeds the peak inrush current value of the signal being switched. Find the point on the trace that equates to the steady state current being switched by the load.
2. Find the corresponding intersection on the y-axis that indicates the maximum cycle rate allowed for a signal with a 50 μs maximum inrush pulse duration.
3. Find the point in the Maximum Cycle Rate Derating Factor by Pulse Width figure that corresponds to the measured pulse width of the inrush current pulse. Find the corresponding derating factor.
Then calculate the maximum cycle rate using the following equation:
$\mathrm{MaxCycleRate}=\text{\hspace{0.17em}}CR{50}_{\mu s}\cdot DF\left(Hz\right)\text{\hspace{0.17em}}\text{\hspace{0.17em}}$

where CR50 μs is the maximum cycle rate for a 50 μs wide inrush current pulse in Hz, and DF is the derating factor.

Note

If the peak impulse current does not exceed 10 A, do not derate the maximum cycle rate below 220 Hz.

For switching a steady state current of 4 A into a load with peak inrush current of 45 A that lasts for 400 μs, choose the 50 A plot line in the Maximum Cycle Rate figure. Find the y-axis value that corresponds to the 4 A load current (650 Hz). Then find the derating factor in the Maximum Cycle Rate Derating Factor by Pulse Width figure that corresponds to 400 μs, which is 0.1.

The maximum cycle rate at which this signal can be switched by the module is calculated as follows:

$\mathrm{MaxCycleRate}=\text{\hspace{0.17em}}650Hz\cdot \text{\hspace{0.17em}}0.1\cong 65\text{\hspace{0.17em}}Hz$

## Dynamic

 Relay operate time[7] 8 μs, typical 35 μs, maximum Typical relay life Unlimited, when operated within specified limits

## Trigger

Input trigger

Sources

PXI trigger lines <0...7>

Minimum pulse width[8]

150 ns

Output trigger

Destinations

PXI trigger lines <0...7>

Pulse width

Software-selectable: 1 µs to 62 µs

## Physical

Relay type

FET

Front panel connector

2 DSUB, 8 positions, male

Power requirement
PXI

3.3 V

1.0 W

5 V

13.0 W

PXI Express

+12 V

14.7 W

3.3 V

1.4 W

Dimensions (L × W × H)

3U, two slots, PXI/cPCI module, PXI Express compatible

21.6 cm × 4.1 cm × 13.0 cm (8.5 in. × 1.6 in. × 5.1 in.)

Weight

403 g (14.2 oz)

## Environment

 Operating temperature 0 °C to 50 °C Storage temperature -40 °C to 70 °C Relative humidity 5% to 85%, noncondensing Pollution Degree 2 Maximum altitude 2,000 m

Indoor use only.

## Shock and Vibration

Operational Shock

30 g peak, half-sine, 11 ms pulse (Tested in accordance with IEC 60068-2-27. Test profile developed in accordance with MIL-PRF-28800F.)

Random Vibration

Operating

5 Hz to 500 Hz, 0.3 grms

Nonoperating

5 Hz to 500 Hz, 2.4 grms (Tested in accordance with IEC 60068-2-64. Nonoperating test profile exceeds the requirements of MIL-PRF-28800F, Class 3.)

## Compliance and Certifications

### Safety

This product is designed to meet the requirements of the following electrical equipment safety standards 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 61326-1 (IEC 61326-1): 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

In the United States (per FCC 47 CFR), Class A equipment is intended for use in commercial, light-industrial, and heavy-industrial locations. In Europe, Canada, Australia, and New Zealand (per CISPR 11), Class A equipment is intended for use only in heavy-industrial locations.

Note

Group 1 equipment (per CISPR 11) is any industrial, scientific, or medical equipment that does not intentionally generate radio frequency energy for the treatment of material or inspection/analysis purposes.

Note

For EMC declarations, certifications, and additional information, refer to the Online Product Certification section.

### 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)

### 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.

### Environmental Management

NI is committed to designing and manufacturing products in an environmentally responsible manner. NI recognizes that eliminating certain hazardous substances from our products is beneficial to the environment and to NI customers.

For additional environmental information, refer to the Minimize Our Environmental Impact 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 the product life cycle, all NI products must be disposed of according to local laws and regulations. For more information about how to recycle NI products in your region, visit ni.com/environment/weee.

### 电子信息产品污染控制管理办法（中国RoHS）

中国客户

National Instruments符合中国电子信息产品中限制使用某些有害物质指令(RoHS)。关于National Instruments中国RoHS合规性信息，请登录 ni.com/environment/rohs_china。(For information about China RoHS compliance, go to ni.com/environment/rohs_china.)

• 1 Signal connections through the PXI-2512 are intended to go through the DUTn pin connections. Signal paths that do not use the DUTn pin connections may exceed the module’s thermal capabilities.
• 2 Measurement Categories CAT I and CAT O (Other) are equivalent. These test and measurement circuits are not intended for direct connection to the MAINs building installations of Measurement Categories CAT II, CAT III, or CAT IV.
• 3 The maximum switching power is limited by the maximum switching current and the maximum voltage, and must not exceed 500 W.
• 4 After a switch operation, an overcurrent error condition occurs when both the overcurrent limit of the module is exceeded, and the overcurrent delay time has expired.
• 5 Exceeding the module’s thermal limit induces an overtemperature condition.
• 6 Overtemperature conditions are created when excessive power is dissipated in the channel paths such as when switching large impulses created by switching into capacitive or inductive loads or when switching a signal at a higher rate than the module dissipates the generated heat. Refer to the figures below for information about the maximum cycle rate.