Description
Overview
The KJ3221X1‑BA1 (12P2531X102) VE4035S2B1 module is an Emerson DeltaV M‑series analog input unit engineered for precise signal acquisition in distributed control environments. Designed for stable long‑term operation, it provides reliable measurement of industrial process variables and integrates seamlessly with DeltaV DCS architectures.
This module supports multi‑channel analog input processing, advanced diagnostics, and robust isolation, making it suitable for demanding applications in refining, petrochemical, power generation, and large‑scale manufacturing.
Key Features
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Eight‑channel analog input acquisition with high‑resolution conversion
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Compatible with DeltaV M‑series I/O subsystem
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Channel‑to‑channel and channel‑to‑bus isolation
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Real‑time diagnostics for wiring integrity, module health, and signal quality
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Supports 4–20 mA input loops with HART passthrough (when paired with appropriate carriers)
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Redundant architecture support for enhanced system availability
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Designed for harsh industrial environments with vibration and temperature tolerance
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Hot‑swappable installation for minimized downtime
Technical Specifications
| Parameter |
Specification |
| Model |
KJ3221X1‑BA1 |
| Part Number |
12P2531X102 |
| Series |
VE4035S2B1 |
| Product Type |
Analog Input Module |
| Channels |
8 AI |
| Input Signal |
4–20 mA (loop powered or externally powered depending on carrier) |
| Resolution |
16‑bit A/D |
| Isolation |
250 V channel‑to‑bus; 1500 V transient protection |
| Diagnostics |
Open circuit detection, module health, signal integrity |
| Communication |
DeltaV M‑series backplane |
| System |
DeltaV DCS |
| Dimensions |
8.1 × 7.9 × 8.8 cm |
| Weight |
0.2 kg |
| Operating Temperature |
–40°C to +70°C (typical M‑series spec) |
| Origin |
USA |
| HS Code |
8537101190 |
| Availability |
In stock |
Application Scenarios
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Continuous process industries requiring stable analog measurement
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Oil & gas upstream and downstream control loops
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Chemical batch and continuous reactors
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Power plant boiler and turbine monitoring
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Water treatment and environmental monitoring systems
Model Comparison
| Model |
Type |
Channels |
Signal Type |
Notes |
| KJ3221X1‑BA1 |
Analog Input |
8 |
4–20 mA |
Standard M‑series AI |
| KJ3222X1‑BA1 |
Analog Input |
16 |
4–20 mA |
Higher channel density |
| KJ3241X1‑BA1 |
Analog Output |
8 |
4–20 mA |
AO version for control loops |
FAQ
Q: Can this module be used in redundant configurations? A: Yes. When installed with redundant carriers, the module supports full DeltaV M‑series redundancy.
Q: Does it support HART? A: HART passthrough is supported when used with compatible HART I/O carriers.
Q: Is this module hot‑swappable? A: Yes, it can be replaced online without shutting down the system.
