The Emerson DeltaV KJ4001X1-BA1 is a foundational 2-slot carrier rack designed for the DeltaV M-series hardware platform. This model provides the physical mounting and electrical backplane for up to two I/O interface modules, facilitating the connection between the field Characterization Modules (CHARMs) or standard I/O cards and the DeltaV controller.
Technical Specifications
| Feature | Details |
| Model Number | KJ4001X1-BA1 |
| Component Type | 2-Slot Local I/O Carrier |
| System Compatibility | DeltaV M-series Controllers & I/O |
| Country of Origin | USA |
| Dimensions (WxHxD) | 92 x 107 x 105 mm |
| Weight | Approx. 0.45 kg |
| Mounting | DIN Rail (Horizontal or Vertical) |
| Internal Bus | Redundant Power and Communication |
Operational Precautions
- Carrier Expansion: When extending the I/O bus by adding multiple carriers, ensure the plastic sliding connectors are fully engaged to maintain the integrity of the redundant power and communication rails.
- Slot Alignment: Align the I/O modules carefully with the guide rails on the carrier before pushing them into the backplane to prevent damage to the high-density pin connectors.
- Termination Plug: Always install a bus termination plug on the last carrier in the local I/O chain to prevent signal reflection and ensure stable communication.
- DIN Rail Grounding: Use a zinc-plated steel DIN rail that is properly bonded to the system’s functional earth; this provides the necessary return path for electromagnetic interference (EMI).
Common Q&A
Q: Can I mix different types of I/O cards on the same KJ4001X1-BA1 carrier? A: Yes, the carrier is universal; you can install any combination of two M-series I/O modules (e.g., one Analog Input and one Digital Output) in the available slots.
Q: Does this carrier require its own power supply? A: The carrier itself is passive; it distributes power from the System Power Supply module (such as the KJ1501X1) through the internal bus to the installed I/O cards.
Q: Is this compatible with S-series hardware? A: No, the KJ4001X1-BA1 is specifically designed for M-series “traditional” I/O and is not physically compatible with S-series electronic marshalling carriers.
Recommended Similar Models
- KJ4001X1-BE1: An 8-slot version of the local I/O carrier for higher density requirements.
- KJ4001X1-NA1: A vertical carrier variant used for space-constrained cabinet layouts.
- KJ1501X1-BC1: The system power supply module typically used to energize these carriers.
- VE4001S2T2B5: DeltaV M-series Controller that manages the data from this carrier.
- KJ3222X1-BA1: A common 32-channel digital output card frequently mounted on this rack.


