NI-9423 Specifications

NI-9423 Nomenclature

In this article, the NI-9423 with screw terminal and NI-9423 with spring terminal are referred to inclusively as the NI-9423. The information in this document applies to all version of the NI-9423 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-9423 Pinout



Table 1. Signal Descriptions
Signal Description
COM Common reference connection to isolated ground
DI Digital input signal connection
NC No connection

LED Indicators

Each channel has an LED that indicates the state of the channel, as the following table describes. The LEDs are disabled when the chassis is in sleep mode.

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.

Input Characteristics

Number of channels

8 digital input channels

Input type

Sinking

Digital logic levels
OFF state

Input voltage

≤5 V

Input current

150 μA

ON state

Input voltage

11 V to 30 V

Input current

≥3 mA

I/O protection

Input voltage

35 V maximum

Reverse-biased voltage

-30 V maximum

Input current

8.5 mA maximum, internally limited

Input delay time

1 μs maximum

MTBF

979,623 hours at 25 °C; Bellcore Issue 2, Method I, Case 3, Limited Part Stress Method

Safety Voltages

Connect only voltages that are within the following limits:

Channel-to-COM

30 V maximum

Isolation

Channel-to-channel

None

Channel-to-earth ground

Continuous

250 V RMS, Measurement Category II

Withstand

2,300 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.

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

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

290 mW maximum

Sleep mode

7 mW maximum

Thermal dissipation (at 70 °C)

Active mode

1.5 W maximum

Sleep mode

1.3 W maximum

Physical Characteristics

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

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

Connector securement

Securement type

Screw flanges provided

Torque for screw flanges

0.2 N · m (1.80 lb · in.)