Description
Product Parameters
- Model Number: SCXI-1325 (Part Number: 777687-25)
- Manufacturer: National Instruments (NI)
- Module Compatibility: SCXI-1124 (6-Channel Analog Output)
- Number of Terminals: 26 Screw Terminals
- Maximum Voltage: 250 Vrms (Working Voltage), CAT II
- Wire Gauge: 14 to 30 AWG
- Cold-Junction Compensation (CJC): No (Standard Terminal Block)
- Connectivity: 96-pin DIN connector to SCXI module
- Strain Relief: Built-in cable clamp
- Weight: 0.60 lbs (0.27 kg)
NI SCXI-1325
NI SCXI-1325
NI SCXI-1325
NI SCXI-1325
The NI SCXI-1325 is a shielded terminal block specifically designed for use with the SCXI-1124 analog output module. It provides a convenient and secure way to connect field signals to the module’s 26-pin front connector. Featuring robust screw terminals and an integrated strain-relief clamp, it is engineered for high-voltage applications up to 250 Vrms. The metal housing provides essential electromagnetic shielding, ensuring signal integrity by protecting the low-level control signals from industrial noise and interference.
Model Comparison
The SCXI-1325 is exclusively matched to the SCXI-1124 module. It should not be confused with the SCXI-1320 or SCXI-1321, which are designed for the SCXI-1120/1121 isolation amplifiers and include specialized components like CJC sensors for thermocouples. While the SCXI-1324 is used for high-voltage switching (SCXI-1160), the 1325 is strictly an interface for analog outputs. It is a “passive” terminal block, meaning it contains no active signal conditioning circuitry; its primary purpose is physical signal routing and safety-rated isolation.
Operation Tips
- Proper Seating: When attaching the terminal block to the SCXI-1124 module, tighten the two thumb screws fully. This ensures a proper ground connection between the terminal block shield and the module chassis.
- High-Voltage Safety: Ensure the SCXI chassis is properly grounded. When working with voltages above 30 Vrms, 42.4 Vpeak, or 60 VDC, use wires with appropriate insulation ratings and ensure the terminal block cover is securely closed.
- Wiring Density: Given the 26 terminals in a compact space, use ferruled wires where possible to prevent stray strands from short-circuiting adjacent channels, especially in high-voltage setups.
- Maintenance: Periodically check the screw terminals for tightness, especially in environments subject to high vibration, as thermal cycling and vibration can cause screw connections to loosen over time.
