Emerson KL4501X1-BC1 CHARM Address Plugs

Overview

The Emerson KL4501X1-BC1 is an Analog Output CHARM module for the DeltaV™ Electronic Marshalling system. It provides a 4–20 mA analog output signal with galvanic isolation. This feature ensures reliable control of valves, actuators, and transmitters in electrically noisy or safety-critical environments. The module prevents ground loops and electrical faults while maintaining high-integrity signal transmission. Its pluggable design simplifies installation and ensures correct placement using keyed terminal blocks.

Technical Specifications

• Function: Analog Output – Isolated 4–20 mA

• Signal Output: 4–20 mA current loop, no HART communication

• Accuracy: ±0.05% of span

• Load Resistance: Minimum 250 ohms, Maximum 750 ohms

• Isolation: Galvanically isolated from system electronics, factory tested to 1000 VDC

• Power Requirements:

• CHARM Bus: +6.3 VDC at ~32 mA

• Field Circuit: +24 VDC at ~30 mA

• Diagnostics: Output loop integrity, fault detection, and status indication

• Installation: Pluggable into CHARM I/O card, keyed terminal block ensures correct placement

• Environmental Ratings:

• Operating temperature: –40°C to +70°C

• Shock: 10 g, 11 ms half sine

• Vibration: 1 mm (2–13.2 Hz), 0.7 g (13.2–150 Hz)

• Airborne contaminants: ISA-S71.04 Class G3

• Relative humidity: 5 to 95%, non-condensing

• CHARM Address Plug: Plug #3 1E, CHARM bus power rating +6.3 VDC at 2 mA