Emerson KL2101X1-BA1

Product Brief:

The KL2101X1-BA1 is a CHARMs (CHannel ARbitrated Marshalling) I/O interface card used in Emerson DeltaV Distributed Control Systems (DCS). It provides the power and communication link between individual CHARM modules and the DeltaV control network, and can be configured for 16-point dry-contact or 24 VDC sinking/sourcing digital inputs.

Category: Emerson

Description

Technical Specifications:

Model: KL2101X1-BA1 (also referenced as 12P4987X102 / X122 / X142)
Type: CHARM I/O Carrier Card — Dry Contact / 24 VDC Digital Input
Channels: 16 digital input points (supports dry contact or 24 VDC wet contact)
Input Voltage (Field): 24 VDC nominal (range 20.4–30 VDC)
Input Current per Channel: approx. 6 mA @ 24 VDC
Response Time: < 5 ms
Bus Power: 24 VDC, 32 mA typical
CHARM Power Output: 6.3 VDC @ 3.25 A (supplied to mounted CHARMs)
Isolation: Galvanic isolation between field side and system bus
Operating Temperature: -40 °C to +70 °C (some sources cite 0–60 °C for panel-mounted variants)
Storage Temperature: -40 °C to +85 °C
Humidity: 5–95 % RH, non-condensing
Vibration: 1 mm pk-pk (2–13.2 Hz); 0.7 g (13.2–150 Hz)
Shock: 10 g half-sine, 11 ms
Contaminants: ISA-S71.04 Class G3 compliant
Hazardous Area: ATEX / IECEx II 3G Ex ec IIC Gc; FM Class I Div 2; CSA certified
Dimensions (module): approx. 144 × 42 × 106 mm
Weight: approx. 0.45 kg (I/O card only); CHARM carrier assembly heavier

Function Features:

Plug-and-play CHARM auto-addressing and automatic detection
Supports HART-enabled analog CHARMs, discrete dry/wet contact CHARMs
Eliminates traditional cross-marshalling panels (electronic marshalling)
Module-level and channel-level diagnostics with LED indicators
Hot-swap capable within CHARM carrier (system-dependent)

Installation & Notes:

Mount in Emerson DeltaV CHARM baseplate/carrier assembly
Field wiring connects to individual CHARM terminals, not directly to this card
Ensure proper grounding per Emerson DeltaV installation manuals
Do not exceed maximum CHARM power budget per carrier

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