Emerson SE4302T02 Isolated 24 VDC Output CHARM

Configured for discrete signal regulation in DeltaV distributed control architectures, the Emerson SE4302T02 (SE4302T02) Isolated Output CHARM provides direct physical/electrical execution of 24 VDC inductive load switching and high-speed digital output orchestration.

Hardware Specifications

Emerson DCS Process Control Characteristics

• 4-20 mA HART loop protocol: The CHARM module interfaces with the DeltaV control network to provide status feedback for discrete logic loops. This connectivity is mandatory to ensure the host controller monitors the operational state of the output load in real-time.
• Channel-to-channel isolation: The module features integrated galvanic isolation between the field-side load and the CHARM baseplate backplane. This is mandatory to mitigate the risk of inductive kickback from solenoids or contactors propagating into the sensitive logic circuits of the DeltaV system.
• Fail-safe state execution: The module is engineered to handle inductive loads up to 1 A. This is mandatory for predictable fail-safe behavior during system power loss or diagnostic-triggered shutdowns, preventing uncontrolled energization of field actuators.

Frequently Asked Questions

Q: Can the SE4302T02 module switch loads greater than 1 A continuous?

A: No. The continuous current rating is strictly limited to 1 A. Exceeding this limit will compromise internal switching components. Load requirements must be verified against the module specification prior to installation.

Q: Is this module suitable for switching purely resistive loads?

A: Yes. While optimized for inductive loads (24 VDC), the module is compatible with resistive loads within the 4-32 VDC and 1 A continuous current constraints.

Field Installation Guidelines

• Mounting: Seat the CHARM module into the baseplate slot. A firm engagement is mandatory to ensure the module pins establish a low-resistance path to the carrier backplane, critical for handling 1 A load currents.
• Grounding: Ensure the CHARM baseplate assembly is bonded to the cabinet’s instrument earth bus. A low-impedance connection is mandatory to provide effective surge suppression for inductive spikes during load de-energization.
• Wiring: Connect the field-side load to the terminal block using adequately sized conductors. Maintaining a minimum separation of 150 mm from low-voltage signal cabling is mandatory to prevent electromagnetic noise from switching transients from corrupting sensitive analog measurement loops.