The KL2101X1-BA1 belongs to Emerson's CHARM (Characterization Module) family for DeltaV distributed control systems. This I/O card specifically handles dry contact inputs from field devices such as switches, push buttons, and relay contacts. Its open voltage design ensures safe operation in hazardous atmospheres. Additionally, the Emerson KL2101X1-BA1 carries multiple international certifications for Zone 2 and Class I Division 2 locations. Users can install this module in extreme temperatures from -40°C to +70°C.
The KL2101X1-BA1 operates on bus power of 24V DC with a maximum current of 32mA. Its field circuit provides 24V DC at 10mA for dry contact sensing. The open voltage design prevents sparking during contact closure. Furthermore, this CHARM module converts dry contact status into digital signals for the DeltaV controller. The Emerson KL2101X1-BA1 requires no external loop power for most dry contact applications. Therefore, it simplifies wiring and reduces panel space.
The KL2101X1-BA1 holds an extensive list of safety approvals. These include ATEX II 3G Ex ec IIC Gc under certificate FM19ATEX0173U. It also carries IECEx FMG 19.0019U and FM21UKEX0017U for international use. For North America, the unit is certified for Class I Division 2 Groups A,B,C,D. Additionally, it meets Class I Zone 2 AEx/Ex ec IIC Gc standards under FM17CA0145U and FM17US0286U. These certifications allow installation in refinery analyzer sheds, paint booths, and pharmaceutical mixing areas.
Input power for the KL2101X1-BA1 comes from the CHARM backplane. The module draws 24V DC at 2A maximum from the system power supply. Output power reaches 6.3V DC at 3.25A internally regulated. Note that the dry contact sensing circuit uses the 24V DC field circuit supply. No additional power supply is needed for typical switch inputs. The Emerson KL2101X1-BA1 efficiently converts bus power for field use.
Shock resistance reaches 10g half-sine wave for 11 milliseconds. Vibration tolerance includes 1mm peak-to-peak from 2 to 13.2Hz, and 0.7g from 13.2 to 150Hz. The KL2101X1-BA1 also meets ISA-S71.04–1985 Class G3 for airborne contaminants. Relative humidity ranges from 5% to 95% non-condensing. These ratings make the module suitable for compressor skids, turbine control panels, and outdoor enclosures. However, avoid direct liquid contact due to the module's exposed electronics.
First, power down the DeltaV CHARM carrier before inserting the KL2101X1-BA1. Next, align the module with the correct slot on the carrier. Then, press firmly until the latch clicks into place. For field wiring, connect dry contact wires to the designated terminals. Use shielded cable for long runs to prevent noise pickup. Additionally, verify that the contact is truly dry (no external voltage). Finally, power up the system and monitor the CHARM status LED for normal operation.
1 x KL2101X1-BA1 Dry Contact CHARM I/O Card
1 x Terminal block connector
1 x Anti-static bag
1 x Label sheet for field wiring
Note: No certificate or warranty documents are included in this package.
All orders ship via FedEx, UPS, or DHL with tracking numbers. Delivery times depend on the destination country. Typical transit takes 3–7 business days.
1. Can the KL2101X1-BA1 accept wet contact signals?
No. This module is designed for dry contacts only. Wet contacts with external voltage require a different CHARM type, such as a 24V DC input module.
2. What is the maximum distance for field wiring to the KL2101X1-BA1?
Use a maximum cable length of 300 meters for reliable dry contact sensing. Longer runs may cause false triggering due to capacitance or noise.
3. Does the Emerson KL2101X1-BA1 need calibration?
No. This CHARM module contains no user-serviceable parts and requires no calibration. If it fails, replace the entire unit.
4. Can I remove the KL2101X1-BA1 while the system is powered?
No. Always de-energize the CHARM carrier before removing or inserting any I/O card. Hot swapping may damage the module or cause safety hazards.
5. What happens if I connect a powered signal to the KL2101X1-BA1?
Applying external voltage may damage the input circuit. The module expects a true dry contact with no external source. Check all field wiring before powering up.
| Brand Name | Emerson |
| Model No. | KL2101X1-BA1 |
| Product Type | I/O Card |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
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