PXI-2512 Specifications

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Updated2025-05-22
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PXI-2512 Specifications

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.

Characteristics 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.

PXI-2512 Pinout

Table 2. Signal Descriptions
Signal	Description
BUSn	Fault bus connection
CHn	Signal connection
DUTn	DUT connection

Table 3. LED Descriptions
LED	Color/State	Status
STATUS	Green	OK, no channel errors present on module
STATUS	Red	Error detected on one or more channels on module
LED_DUTn	Off	Open channel
	Green	Pass-through channel closed (CHn to DUTn)
	Blink Amber Once	DUTn connected to fault bus A
	Blink Amber Twice	DUTn connected to fault bus B
	Solid Amber	Any combination of multiple DUTn paths closed (CHn, BusA, BusB)
	Blink Red Once^[1]¹ Overcurrent condition does not exist at the time the overtemperature condition was detected.	Overtemperature error detected on DUTn
	Solid Red^[2]² Overtemperature condition might or might not exist.	Overcurrent error detected on DUTn

Topology

Topologies

Independent

Input Characteristics

Note

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 might exceed the thermal capabilities of the module.

All input specifications are DC, AC_rms, 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 V_rms/42 V_pk/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 AC_rms, CAT I^[3]³ 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.
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)^[4]⁴ The maximum switching power is limited by the maximum switching current and the maximum voltage, and must not exceed 500 W.	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).

MaxPulseWidth = \frac{1.512 - 0.01 \cdot (I_{SteadyState})^{2}}{(I_{PeakInrush})^{2}}

MaxPulseWidth = \frac{1.512 - 0.01 \cdot (I_{SteadyState})^{2}}{(I_{PeakInrush})^{2}}

DC path resistance

16 mΩ, typical

35 mΩ, maximum

Bandwidth (50 Ω system)

>800 kHz, typical

Overcurrent Detection

Note

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.

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

Overtemperature Detection

Note

Exceeding the module’s thermal limit induces an overtemperature condition.

Note

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.

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 5. 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:

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.
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.
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:
$MaxCycleRate = C R 50_{μ s} \cdot D F (H z)$ $MaxCycleRate = C R 50_{μ s} \cdot D F (H z)$

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:

MaxCycleRate = 650 H z \cdot 0.1 ≅ 65 H z

MaxCycleRate = 650 H z \cdot 0.1 ≅ 65 H z

Dynamic Characteristics

Relay operate time^[5]⁵ Certain applications may require additional time for proper settling. Refer to the NI Switches Help for more information about including additional settling time.

8 μs, typical

35 μs, maximum

Typical relay life

Unlimited, when operated within specified limits

Trigger Characteristics

Input trigger
Sources	PXI trigger lines <0...7>
Minimum pulse width^[6]⁶ The PXI-2512 recognizes trigger pulse widths less than 150 ns if digital filtering is disabled. Refer to the NI Switches Help for information about disabling digital filtering.	150 ns

Output trigger
Destinations	PXI trigger lines <0...7>
Default pulse width	2 µs, typical

Physical Characteristics

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

Table 4. 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

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

Compliance and Certifications

Safety Compliance Standards

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 C22.2 No. 61010-1

Note For safety certifications, refer to the product label or the Product Certifications and Declarations 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
EN 55022 (CISPR 22): Class A emissions
EN 55024 (CISPR 24): Immunity
AS/NZS CISPR 11: Group 1, Class A emissions
AS/NZS CISPR 22: 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 Product Certifications and Declarations.

CE Compliance

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

2014/35/EU; Low-Voltage Directive (safety)
2014/30/EU; Electromagnetic Compatibility Directive (EMC)
2011/65/EU; Restriction of Hazardous Substances (RoHS)
2014/53/EU; Radio Equipment Directive (RED)
2014/34/EU; Potentially Explosive Atmospheres (ATEX)

Product Certifications and Declarations

Refer to the product Declaration of Conformity (DoC) for additional regulatory compliance information. To obtain product certifications and the DoC for NI products, visit ni.com/product-certifications, search by model number, and click the appropriate link.

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 Engineering a Healthy Planet 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.

EU and UK Customers

Waste Electrical and Electronic Equipment (WEEE)—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RoHS— NI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NI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 Overcurrent condition does not exist at the time the overtemperature condition was detected.

² Overtemperature condition might or might not exist.

³ 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.

⁴ The maximum switching power is limited by the maximum switching current and the maximum voltage, and must not exceed 500 W.

⁵ Certain applications may require additional time for proper settling. Refer to the NI Switches Help for more information about including additional settling time.

⁶ The PXI-2512 recognizes trigger pulse widths less than 150 ns if digital filtering is disabled. Refer to the NI Switches Help for information about disabling digital filtering.