The Emerson KL4501X1‑BB1 is an Address Plug (Plug #2, code 1C) used in the DeltaV™ Electronic Marshalling CHARM I/O subsystem. It assigns a unique address to each CHARM module within an I/O baseplate, enabling the DeltaV control system to automatically identify and configure CHARM channels. Specifically designed for hazardous‑area environments (Zone 2/Div 2), it integrates keying to prevent mis‑insertion and ensure safe, reliable signal assignment.

Key Features

• Unique address designation for CHARM terminal blocks (Plug #2 = address 2)

• Rotary‑keyed insertion ensures correct pairing with terminal blocks

• Hazardous area rated (Zone 2 / Class I Div 2)

• Non‑sparking; field power must be de‑energized before insertion or removal

• No calibration or user serviceable parts required

• Compatible with DeltaV CM S/MS and Electronic Marshalling hardware

Technical Specifications

Industry Applications

• DeltaV™ Electronic Marshalling installations using CHARMs and terminal blocks

• Industrial automation in oil & gas, chemical, and power generation facilities

• Hazardous location applications where proper address assignment is critical

• CHARM I/O configuration for field-mounted or cabinet-installed systems

Product Advantages

• Ensures correct channel addressing and auto‑configuration with DeltaV software

• Rotary keying prevents mismatched or reversed plug‑block pairing

• Certified for safe use in Zone 2 / Class I Div 2 hazardous areas

• Simple plug-in design; service-free and calibration-free

• Enables flexible CHARM readdressing without rewiring

Frequently Asked Questions (FAQ)

1. What is the function of this address plug?

   It assigns Address #2 for a CHARM terminal block in the DeltaV system.

2. What power does it draw from the CHARM bus?

   Approximately +6.3 VDC at 2 mA.

3. Can it be inserted or removed under power?

   No—field power must be off unless the area is confirmed non‑hazardous.

4. Is the plug keyed for mis‑insertion prevention?

   Yes—rotary keying ensures alignment and compatibility.

5. Is calibration required?

   No, it contains no user‑serviceable components.

6. What are the environmental ratings?

   –40 to +70 °C, vibration 1 mm p‑p/0.7 g, shock 10 g, humidity 5–95%.

7. Is it suitable for hazardous locations?

   Yes—certified for ATEX Zone 2 and FM Class I Div 2.

8. How does it integrate into DeltaV?

   It is plugged into the CHARM terminal block on the CHARM baseplate.

9. What is the weight of the plug?

   Around 0.05 kg.

10. What happens if I install the wrong plug number?

    The system may misaddress channels; you must reset terminal-block keys manually.