PLCs, Power Supplies & Others

Core Interface for High-Voltage Dry Contact Signals

The Emerson KJ3225X1-BA1 12P4174X032 is an 8-channel, 120VAC isolated discrete input module for DeltaV systems. This module interfaces directly with high-voltage dry contact field devices like pushbuttons, selector switches, and limit switches. It converts the 120VAC on/off state into reliable digital data for the control system. Consequently, it is essential for monitoring plant status and safety interlocks where higher voltage signaling is standard.

Isolated Design and Fast Response

Each of the eight input channels features electrical isolation for superior noise immunity and safety. This isolation protects the sensitive DeltaV system from high-voltage transients and ground loops. The KJ3225X1-BA1 offers a fast 1-millisecond response time for immediate detection of signal changes. Furthermore, individual LED indicators provide clear visual status feedback for each input point.

Detailed Technical Specifications

Engineered for industrial durability, the module operates reliably across an extreme temperature range. Its compact and lightweight design allows for efficient use of space within DeltaV racks. The following table details its complete electrical, performance, and environmental parameters.

Broad Industrial Application Scope

In process control, use this module to read signals from high-voltage pushbuttons, level switches, and motor-run contacts. For manufacturing automation, it interfaces with 120VAC safety gates, emergency stops, and presence sensors. The Emerson KJ3225X1-BA1 is also ideal for facility management, monitoring door contacts and alarm panels with standard AC voltages. Therefore, it serves as a versatile and robust foundation for digital input acquisition in facilities using common AC control power.

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