NI 9472 Sourcing Digital Output Module (Screw Terminal)

The NI 9472 is an eight-channel sourcing digital output module designed for direct integration into NI CompactDAQ and CompactRIO systems. It delivers 24 V logic level signals through screw-terminal connectors, making it ideal for controlling industrial devices including motors, actuators, and relays. Each channel sources current from an external power supply (6–30 VDC) to drive loads up to 0.75 A continuous, with output delay as low as 100 μs at full load.

– Technical Specifications

Output Performance
• 8 digital output channels, sourcing topology
• Maximum continuous output current: 0.75 A per channel
• External power supply voltage range: 6–30 VDC
• Output voltage: Vsup – (I0 · R0)
• Output impedance: 0.07 Ω typical, 0.13 Ω maximum
• Output delay time (full load): 100 μs maximum
• Individual LED status indicators per channel

Protection & Safety
• Transient overvoltage protection: 2,300 Vrms between output and backplane
• Maximum input voltage rating: 30 VDC
• Short-circuit protection: Automatic channel trip at >13 A with 10 μs response time
• Internal flyback diodes eliminate external protection diodes for inductive loads
• Measurement Category II for screw-terminal connections

– Key Features

• Screw-terminal connector (10-position) rated for 26 AWG to 14 AWG copper conductor wire
• Recommended screw torque: 0.5–0.6 N · m
• Compact module footprint: 72.2 mm × 85.7 mm
• Sourcing outputs drive current from external supply to load when activated
• No external components required for energy-storing devices thanks to integrated flyback protection

– Typical Applications

• Industrial automation systems requiring multi-channel relay or solenoid control
• Motor and actuator drive circuits in manufacturing environments
• Data acquisition systems needing synchronized digital output signals

– Compatibility & Integration

Designed for NI CompactDAQ and CompactRIO chassis. Compatible with 6 V to 30 V external power supplies. Direct connection to standard industrial control devices via screw terminals.