NI-9472 Specifications

Connector Types

The NI-9472 has more than one connector type: NI-9472 with screw terminal, NI-9472 with spring terminal, and NI-9472 with DSUB. Unless the connector type is specified, NI-9472 refers to all connector types.

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. All voltages are relative to COM unless otherwise noted.

NI-9472 Pinout



Note You must use 2-wire ferrules to create a secure connection when connecting more than one wire to a single terminal on the NI-9472 with screw terminal or NI-9472 with spring terminal.
Table 1. NI-9472 Signal Descriptions
Signal Description
COM Common reference connection to isolated ground
DO Digital output signal connection
Vsup Voltage supply connection
Table 2. LED Indicators
LED Pattern Indication
Solid The channel has been programmed to be in the ON state.
Off The channel has been programmed to be in the OFF state.

Output Characteristics

Number of channels

8 digital output channels

Output type

Sourcing

Power-on output state

Channels off

External power supply voltage range (Vsup)

6 VDC to 30 VDC

Output impedance (R0)

Typical

0.07 Ω

Maximum

0.13 Ω

Continuous output current (I0), per channel

0.75 A maximum

Output voltage (V0)

Vsup - (I0 · R0)

I/O protection

Voltage

30 VDC maximum

Reversed voltage

None

Short circuit trip time

10 μs at 14 A

Table 3. Short-circuit Behavior
Current Channel Behavior Module Protection
Less than .75 A Channel does not trip Module is not damaged
.75 A to 1.5 A for 100 ms maximum, repeatable after 1 s[1]1 One channel at a time. Channel does not trip Module is not damaged
1.5 A to 4.4 A Channel does not trip Module may be damaged
4.4 A to 14 A Channel may trip Module may be damaged
Greater than 14 A Channel trips Module is not damaged
Figure 1. Short-circuit Behavior


Output delay time (full load)

100 µs maximum

MTBF

1,113,301 hours at 25 °C; Bellcore Issue 2, Method 1, Case 3, Limited Part Stress Method

NI-9472 with Screw Terminal and Spring Terminal Safety Voltages

Connect only voltages that are within the following limits.

Channel-to-COM

30 VDC maximum

Isolation

Channel-to-channel

None

Channel-to-earth ground

Continuous

250 Vrms, Measurement Category II

Withstand

2,300 Vrms, verified by a 5 s dielectric withstand test

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-9472 with DSUB Safety Voltages

Connect only voltages that are within the following limits.

Channel-to-COM

30 VDC maximum

Isolation

Channel-to-channel

None

Channel-to-earth ground

Continuous

60 VDC, Measurement Category I

Withstand

1,000 Vrms, verified by a 5 s dielectric withstand test

Caution Do not connect the product to signals or use for measurements within Measurement Categories II, III, or IV.
Attention Ne pas connecter le produit à des signaux dans les catégories de mesure II, III ou IV et ne pas l'utiliser pour effectuer des mesures dans ces catégories.
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-9472 with screw terminal

2,000 m

NI-9472 with spring terminal

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

230 mW maximum

Sleep mode

0.4 mW maximum

Thermal dissipation (at 70 °C)

Active mode

1.5 W maximum

Sleep mode

55 mW maximum

Physical Characteristics

Dimensions

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

Weight

NI-9472 with screw terminal

150 g (5.3 oz)

NI-9472 with spring terminal

139 g (4.9 oz)

NI-9472 with DSUB

145 g (5.1 oz)

Screw Terminal Wiring

Gauge

0.2 mm2 to 2.5 mm2 (26 AWG to 14 AWG) copper conductor wire

Wire strip length

13 mm (0.51 in.) of insulation stripped from the end

Temperature rating

90 °C, minimum

Torque for screw terminals

0.5 N · m to 0.6 N · m (4.4 lb · in. to 5.3 lb · in.)

Wires per screw terminal

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

Ferrules

0.25 mm2 to 2.5 mm2

Spring Terminal Wiring

Gauge

0.2 mm2 to 2.5 mm2 (30 AWG to 12 AWG) copper conductor wire

Wire strip length

10 mm (0.39 in.) of insulation stripped from the end

Temperature rating

90 °C, minimum

Wires per spring terminal

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

Ferrules

0.25 mm2 to 2.5 mm2

Connector Securement

Securement type

Screw flanges provided

Torque for screw flanges

0.2 N · m (1.80 lb · in.)

1 One channel at a time.