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NI 9485

Product Name
NI-9485 8-Channel Solid-State Relay Digital Output Module.
Product Introduction
C Series SSR output module that switches DC and AC loads from CompactDAQ or CompactRIO controllers.
Technical Specifications
Brand: National Instruments
Category:
Description
Model: NI-9485
Channels: 8 digital output
Relay Type: Normally open solid-state relay
Switching Voltage: 60 VDC max, 30 Vrms max
Current up to 4 channels: 1.2 A per channel
Current all channels: 0.75 A per channel
Channel-to-Earth: 250 Vrms CAT II
Channel-to-Channel: 60 VDC isolation
Operating Temperature: -40 to 70 °C
Performance Parameters
Relay Open Time: 0.5 ms typical
Relay Close Time: 9.0 ms typical
Switching Rate at 90% Duty: 1 operation per second typical
Vibration: 5 g
Shock: 50 g
Functional Features
Sourcing or sinking load switching.
Hot-swappable C Series module.
Bank / channel isolation options by platform.
Controls solenoids, lamps, indicators, small actuators.
Software-controlled digital outputs.
Application Scenarios
Factory I/O control.
Relay replacement.
Load switching.
Automation panels.
CompactDAQ control systems.
CompactRIO embedded control.
Structural Characteristics
C Series module housing.
Screw-terminal or compatible connector version.
Solid-state switching elements.
LED status typically provided by chassis / software state.
Working Principle
Controller sends digital ON/OFF command.
SSR closes internal semiconductor switch.
Load current flows through output terminals.
No mechanical contacts, so wear is lower than electromechanical relays.
Installation Requirements
Install in NI CompactDAQ or CompactRIO chassis.
Use shielded cables for EMC compliance.
Verify load voltage and current before wiring.
Provide free air cooling in panel.
Usage Notes
Do not exceed 60 VDC or 30 Vrms switching voltage.
Observe per-channel and total current limits.
SSRs generate heat; avoid enclosing without ventilation.
Return damaged modules to NI for repair.
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