Description
Meta Description
Get field technical specs, exact reorder points, and lifecycle inventory advice for the NI PXIe-2569 100-channel SPST relay switch module. Avoid ATE downtime.
Main Body
Field Reliability and Functional Architecture
Walking through an automotive radar functional testing bay last week, I ran into a system throwing intermittent continuity faults. Swapping the existing card out for a factory sealed NI PXIe-2569 resolved the signal degradation immediately. This high-density module features 100 channels of single-pole single-throw (SPST) armature relays, operating with a maximum switching voltage of 150 V DC or 150 V AC. For physical topology configuration, always trace the terminal block mating pins—otherwise, high-voltage transients can jump adjacent traces during fast cycle switching.
Spares Management and Capital Allocation
Parameter: Value
Model Number: PXIe-2569
Part Number: 780587-69 (or similar configuration variants)
Condition: New Original (New Surplus) or Refurbished (tested)
Relay Type: Armature
Number of Channels: 100 SPST (Form A)
Max Switching Current: 1 A per channel Managing this hardware requires strict buffer stock rules because electromechanical relays exhibit predictable wear-out mechanisms based on cycle counts. Relying on JIT replenishment for automated test equipment (ATE) lines introduces severe lead time variability when channels fail during high-throughput validation runs. Hold a minimum of 1 unit on-site as an insurance policy for facilities operating more than five functional test stations.
- Max Inventory Level: 2 units per regional testing hub
- Min Inventory Level: 1 unit on-site
- Reorder Point: Trigger purchase when stock hits 1 unit, assuming a 4-week lead time window from preferred suppliers
Limitations and Fit
Avoid deploying this switch card in RF or high-bandwidth microwave applications requiring impedance matching. It handles low-frequency signal routing and power distribution perfectly, but introduces unacceptable insertion loss and crosstalk above 20 MHz. Well, technically it handles up to 1 A switching current, but only if total module power dissipation does not exceed the maximum chassis cooling capacity.
Quick Conclusions
- Keep 1 unit factory sealed on-site to mitigate electromechanical relay wear-out.
- Not recommended for RF, microwave, or high-bandwidth signal routing.
- Relay count tracking should be monitored via NI Switch Health Accelerator software.
- Verify maximum voltage limits against custom TB-2668 terminal block ratings.
FAQ
What is the expected mechanical relay life for the PXIe-2569? Under no-load conditions, the internal armature relays typically achieve up to 50,000,000 cycles.
Can I configure the channels as a multiplexer or matrix? Yes. By using external terminal blocks or custom wiring, you can wire the 100 SPST relays into various matrix layouts.
What terminal blocks are compatible with this module? The NI TB-2668 is the standard unshielded screw-terminal block used for connecting field wiring.
Channel Adaptation Notes: Plant Maintenance Portal
Link this technical breakdown directly to the automated test equipment hardware registry. Ensure procurement teams can check cross-site sharing availability across manufacturing lines before issuing external purchase orders.
