Description
Product Overview
The Emerson KJ4001X1-CA1 is a DeltaV I/O Terminal Block used to terminate and interface field wiring with compatible DeltaV I/O modules. Emerson’s own DeltaV documentation identifies the KJ4001X1-CA1 specifically as an I/O Terminal Block, distinguishing it from the KJ4001X1 carrier variants used to mount I/O modules. The associated ordering reference commonly listed with this assembly is 12P0623X062.
The Emerson KJ4001X1-CA1 is therefore not a PLC CPU, standalone I/O controller, or conventional analog input card. Its role is at the physical I/O termination layer of a DeltaV system. Field conductors are landed at the terminal block, while the associated I/O electronics reside in the compatible DeltaV I/O module/carrier architecture. This distinction matters during replacement because a terminal block with the wrong configuration can create wiring or channel-assignment problems even when it physically fits the carrier.
The KJ4001X1-CA1 appears in Emerson’s DeltaV Scalable Process System documentation as a dedicated I/O terminal-block variant, while closely related suffixes identify different terminal arrangements, including fused and multi-wire versions. For procurement, the complete KJ4001X1-CA1 / 12P0623X062 identification should therefore be matched rather than substituting another KJ4001X1 variant based solely on physical appearance.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Emerson |
| System | DeltaV |
| Model | KJ4001X1-CA1 |
| Ordering Number | 12P0623X062 |
| Product Type | I/O Terminal Block |
| Hardware Family | DeltaV M-Series / Scalable Process System |
| Primary Function | Field I/O termination |
| Installation | DeltaV I/O carrier |
| Terminal Configuration | Standard I/O terminal block |
| Fused Version | No — KJ4001X1-CB1 is the fused variant |
| 4-Wire Version | No — KJ4001X1-CC1 is the 4-wire variant |
| Mass Termination | No — separate CD1/CE1/CF1 variants |
| Operating Temperature | −40°C to +70°C reported |
| Relative Humidity | 5–95% non-condensing reported |
| Shock | 10 g half-sine, 11 ms reported |
| Vibration | 1 mm peak-to-peak / 0.7 g depending on frequency range |
| Hazardous Area Rating | Application/certification dependent |
| IP Rating | System/enclosure dependent |
| Communication | No independent field communication protocol |
| CPU | None |
| Firmware | None |
| Condition | New Surplus / replacement spare |
The environmental figures above are supported by available DeltaV documentation and product references.
Important specification correction
Several commercial listings incorrectly describe as an analog input module, dual-channel measurement device, or an RS-485 module. Those descriptions conflict with Emerson’s documentation, which explicitly identifies as an I/O Terminal Block.
I would not use the commonly copied claims of “24 VDC, 2 A,” “dual channels,” or “RS-485” as specifications for the terminal block itself. Those figures appear to have been copied from unrelated DeltaV equipment.
KJ4001X1-CA1
Main Features and Advantages
Dedicated DeltaV I/O Termination
The provides the physical termination point for field wiring associated with compatible DeltaV I/O. It is part of the I/O infrastructure rather than the active control processor.
Clear Variant Identification
The family contains several different configurations. Emerson documentation lists:
- — I/O Terminal Block
- — Fused I/O Terminal Block
- — 4-Wire I/O Terminal Block
- — Mass Termination 10-Pin Assembly
- — Mass Termination 16-Pin Assembly
- — Mass Termination 24-Pin Assembly
This makes the CA1 suffix operationally important. It should not be casually replaced with CB1 or CC1 because the field termination arrangement is different.
DeltaV M-Series Integration
The terminal block belongs to the DeltaV I/O subsystem. Emerson continues to document the DeltaV M-Series I/O architecture, including carriers, cables, and terminal assemblies.
Field Maintenance Value
For an existing DeltaV installation, retaining the correct terminal block can avoid unnecessary field rewiring. This is particularly useful during I/O module replacement or maintenance of older cabinets where wiring documentation and physical termination layouts have already been established.
Environmental Suitability
Available documentation indicates an operating environment extending from approximately −40°C to +70°C, with vibration, shock, humidity, and airborne-contaminant requirements specified for the DeltaV hardware family.
Related Emerson DeltaV Products
- — Fused I/O Terminal Block. It is a different termination configuration and should not be substituted without checking the field circuit requirements.
- — 4-Wire I/O Terminal Block. Intended for a different field wiring arrangement.
- — Mass Termination 10-Pin Assembly.
- — Mass Termination 16-Pin Assembly.
- — Mass Termination 24-Pin Assembly.
- — 8-Wide I/O Interface Carrier.
- — 8-Wide I/O Interface Carrier with shield bar.
- — 2-Wide Power Carrier.
- KJ4002X1-BF2/BF3/BF4 — DeltaV horizontal-carrier extender cables used elsewhere in the M-Series I/O subsystem.
Frequently Asked Questions
is ?
It is an Emerson DeltaV I/O Terminal Block, with 12P0623X062 commonly associated as its ordering number. Emerson’s documentation explicitly lists the CA1 variant as an I/O Terminal Block.
Is an I/O module?
No. It is a terminal block. The active I/O electronics are provided by the associated DeltaV I/O module.
Is it the same as -CB1?
No. CB1 is the fused I/O terminal-block variant, while CA1 is the standard I/O terminal block.
oes have firmware?
No. It is a passive termination/interface component rather than a programmable controller or intelligent I/O module.
Does it communicate using RS-485?
Not as an independent communication device. Some commercial listings incorrectly assign RS-485 to this part. The CA1 is documented by Emerson as an I/O terminal block, so RS-485 should not be listed as its native communication interface.
What should be checked before replacement?
Verify:
- 12P0623X062
- Correct DeltaV I/O carrier
- Correct I/O module type
- Terminal numbering
- Field wiring arrangement
- Whether the application requires fused or 4-wire termination
- Physical terminal condition
- Hazardous-area approval requirements where applicable
Procurement judgment: son / 12P0623X062 should be specified as a DeltaV I/O Terminal Block, not as an analog input module, power supply, or RS-485 communication card. Emerson’s own DeltaV documentation provides the strongest evidence for this classification.
