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Product Description

High-Side Switching for Discrete Control

The Emerson DeltaV KJ3202X1-BA1 (P/N 12P2536X042) is a Series 2 high-performance Digital Output (DO) card designed for the DeltaV Distributed Control System (DCS). This module provides 8 channels of isolated 24 VDC high-side switching, meaning it switches the positive side of the power circuit to drive field devices. It is engineered for industrial environments requiring deterministic control of discrete equipment such as solenoid valves, motor starters, and pilot lights. The Series 2 design ensures enhanced diagnostic capabilities and tighter integration with the DeltaV controller backplane.

Rugged Reliability and Fault Protection

Built to withstand harsh process conditions, the KJ3202X1-BA1 features an expansive operating temperature range and G3-level protection against airborne contaminants. Each channel is equipped with current limiting and short-circuit protection to prevent field faults from affecting the entire I/O card or the system bus. The module employs channel-to-bus optical isolation to eliminate ground loops and protect sensitive system electronics from high-voltage transients. Its plug-and-play design allows for rapid installation on DeltaV 2-wide power/controller carriers.

Detailed Technical Specifications


Industrial Application Scenarios

  • Valve Actuation: Precise control of 24VDC solenoid-operated valves in oil and gas manifolds.

  • Motor Control Centers: Providing start/stop signals to discrete motor contactors in water treatment plants.

  • Safety Signaling: Driving industrial sirens and strobe lights for process alarm notification.

  • Sequence Control: Managing high-speed discrete logic for batch processing in chemical manufacturing.

FAQ: Frequently Asked Questions

  • Q: What is the difference between High-Side and Low-Side switching?Ans: High-side switching, as found in the KJ3202X1-BA1, connects the load to the positive supply. This is generally preferred in industrial safety because a short to ground will not inadvertently activate the device.

  • Q: Can this card be replaced while the system is powered?Ans: Yes, the DeltaV system supports "Hot Swapping" for I/O cards; however, ensure that the removal of the KJ3202X1-BA1 will not cause an unsafe process state by de-energizing critical outputs.

  • Q: Does the 3A card limit mean all 8 channels can run at 1A?Ans: No. While an individual channel can handle 1A, the total simultaneous current for all 8 channels must not exceed the 3A total power budget of the card to prevent overheating.

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