Emerson KJ3202X1-BK1 S-Series High Side Output Card

The Emerson KJ3202X1-BK1, also cataloged as the KJ3202X1-BK1 High Side Output Card, operates as a dedicated hardware component for low-latency discrete loop actuation and field device switching within DeltaV platforms. The S-Series solid-state module delivers sourcing digital outputs natively at the hardware tier, switching auxiliary current rails to drive external solenoids, relays, and indicators across the process control network.

Hardware Specifications

Process Control & DCS Instrumentation Rails

• Channel-to-Channel Isolation and Fault Containment Rails The 8-channel digital output module incorporates distinct physical dielectric isolation boundaries to isolate internal S-Series logic chips from the 30 VDC bussed field power plane. This hardware setup traps field-side induction spikes, short circuits, and ground potential differentials at the terminal edge, preventing voltage transients from back-propagating into the shared distributed control system (DCS) processing rails.
• 4-20 mA HART Loop Protocol Network Coexistence While the card actively switches discrete high-side current loops up to its 1 A per channel limit, it functions concurrently within control cages housing high-density 4-20 mA HART loop protocol lines. Integrated capacitive filtering loops suppress the electrical switching ripples caused by inductive load engagement, stopping high-frequency cross-talk from corrupting adjacent analog input processing tracks.

Frequently Asked Questions

Q: What physical operation defines the "High Side" switching architecture of this digital output card?

A: High side switching indicates that each of the 8 channels switches the positive leg (+24/30 VDC) of the bussed field power rail directly to the external load. The return path from the field device loops back to a common ground block, ensuring that no voltage remains present at the field terminal when the channel register is set to a logic 0 safe state.

Q: What operational limit controls channel loading if multiple outputs run concurrently?

A: While each individual channel can switch up to 1 A at 30 VDC, the card has a total field circuit capacity limit of 3 A. If four channels are energized simultaneously at 0.75 A each, the maximum load limit is reached; trying to run all 8 channels at their individual 1 A parameters will trip internal thermal protection networks.