NI-9476 and sbRIO-9476 Specifications

NI-9476 Nomenclature

In this article, the NI-9476 with spring terminal and NI-9476 with DSUB are referred to inclusively as the NI-9476. The information in this document applies to all versions of the NI-9476 unless otherwise specified.

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 Typical unless otherwise noted.

Conditions

Specifications are valid for the range -40 °C to 70 °C unless otherwise noted.

NI-9476 Pinout



Table 1. Signal Descriptions
Signal Description
COM Common reference connection
DO Digital output signal connection
Vsup Voltage supply input connection

Output Characteristics

Number of channels

32 digital output channels

Output type

Sourcing

Output Voltage

Vsup - (I0 * R0)

Power-on output state

Channels off

External power supply voltage range (Vsup-to-COM)

6 V DC to 36 V DC

Continuous output current (I0) per channel (DO-to-COM)

With 6 V DC to 30 V DCsupply voltage

250 mA maximum

With 30 V DC to 36 V DCsupply voltage

200 mA maximum

Output impedance (R0)

0.3 Ω maximum

Continuous overvoltage protection (Vsup)

up to 40 V maximum

Reversed-voltage protection

None

Current limiting

None

Short-circuit protection

Indefinitely protected when a channel is shorted to COM or to a voltage up to Vsup

Trip current for one channel

With all other channels at rated current

3 A typical

With all other channels off

5 A typical

Vsup current consumption

28 mA maximum

Maximum update rate

40 μs maximum

Propagation delay

500 μs maximum

MTBF

1,091,425 hours at 25 °C; Bellcore Issue 2, Method 1, Case 3, Limited Part Stress Method

NI-9476 with Spring Terminal Safety Voltages

Connect only voltages that are within the following limits.

Vsup-to-COM

40 V DC maximum

DO

VCOMVDOVsup

Isolation

Channel-to-channel

None

Channel-to-earth ground

Continuous

250 V RMS, Measurement Category II

Withstand up to 5,000 m

3,000 V RMS, verified by a 5 s dielectric withstand test

Measurement Category II

Caution Do not connect the product to signals or use for measurements within Measurement Categories III or IV.
Attention Ne pas connecter le produit à des signaux dans les catégories de mesure III ou IV et ne pas l'utiliser pour effectuer des mesures dans ces catégories.

Measurement Category II is for measurements performed on circuits directly connected to the electrical distribution system. This category refers to local-level electrical distribution, such as that provided by a standard wall outlet, for example, 115 V for U.S. or 230 V for Europe.

NI-9476 with DSUB Safety Voltages

Connect only voltages that are within the following limits.

Vsup-to-COM

40 V DC maximum

DO

VCOMVDOVsup

Isolation

Channel-to-channel

None

Channel-to-earth ground

Continuous

60 V DC, Measurement Category 1

Withstand up to 2,000 m

1,000 V RMS, verified by a 5 s dielectric withstand test

Measurement Category I

Warning Do not connect the product to signals or use for measurements within Measurement Categories II, III, or IV, or for measurements on MAINs circuits or on circuits derived from Overvoltage Category II, III, or IV which may have transient overvoltages above what the product can withstand. The product must not be connected to circuits that have a maximum voltage above the continuous working voltage, relative to earth or to other channels, or this could damage and defeat the insulation. The product can only withstand transients up to the transient overvoltage rating without breakdown or damage to the insulation. An analysis of the working voltages, loop impedances, temporary overvoltages, and transient overvoltages in the system must be conducted prior to making measurements.
Mise en garde Ne pas connecter le produit à des signaux dans les catégories de mesure II, III ou IV et ne pas l'utiliser pour des mesures dans ces catégories, ou des mesures sur secteur ou sur des circuits dérivés de surtensions de catégorie II, III ou IV pouvant présenter des surtensions transitoires supérieures à ce que le produit peut supporter. Le produit ne doit pas être raccordé à des circuits ayant une tension maximale supérieure à la tension de fonctionnement continu, par rapport à la terre ou à d'autres voies, sous peine d'endommager et de compromettre l'isolation. Le produit peut tomber en panne et son isolation risque d'être endommagée si les tensions transitoires dépassent la surtension transitoire nominale. Une analyse des tensions de fonctionnement, des impédances de boucle, des surtensions temporaires et des surtensions transitoires dans le système doit être effectuée avant de procéder à des mesures.

Measurement Category I is for measurements performed on circuits not directly connected to the electrical distribution system referred to as MAINS voltage. MAINS is a hazardous live electrical supply system that powers equipment. This category is for measurements of voltages from specially protected secondary circuits. Such voltage measurements include signal levels, special equipment, limited-energy parts of equipment, circuits powered by regulated low-voltage sources, and electronics.

Note Measurement Categories CAT I and CAT O are equivalent. These test and measurement circuits are for other circuits not intended for direct connection to the MAINS building installations of Measurement Categories CAT II, CAT III, or CAT IV.

Environmental Characteristics

Temperature

Operating

-40 °C to 70 °C

Storage

-40 °C to 85 °C

Humidity

Operating

10% RH to 90% RH, noncondensing

Storage

5% RH to 95% RH, noncondensing

Ingress protection

IP40

Pollution Degree

2

Maximum altitude

NI-9476 with spring terminal

5,000 m

NI-9476 with DSUB

2,000 m

Shock and Vibration
Operating vibration

Random

5 g RMS, 10 Hz to 500 Hz

Sinusoidal

5 g, 10 Hz to 500 Hz

Operating shock

30 g, 11 ms half sine; 50 g, 3 ms half sine; 18 shocks at 6 orientations

To meet these shock and vibration specifications, you must panel mount the system.

Power Requirements

Power consumption from chassis

Active mode

250 mW maximum

Sleep mode

25 μW maximum

Thermal dissipation (at 70 °C)

Active mode

1.5 W maximum

Sleep mode

30 mW maximum

Physical Characteristics

If you need to clean the module, wipe it with a dry towel.

Dimensions

Visit ni.com/dimensions and search by module number.

Spring-terminal wiring

Gauge

0.14 mm2 to 1.5 mm2 (26 AWG to 16 AWG) copper conductor wire

Wire strip length

10 mm (0.394 in.) of insulation stripped from the end

Temperature rating

90 °C, minimum

Wires per screw terminal

One wire per spring terminal; two wires per spring terminal using a 2-wire ferrule

Ferrules

0.14 mm2 to 1.5 mm2

Connector securement

Securement type

Screw flanges provided

Torque for screw flanges

0.2 N · m (1.80 lb · in.)

Weight

NI-9476 with spring terminal

167 g (5.9 oz)

NI-9476 with spring terminal

147 g (5.2 oz)