Description
Product Description
Overview
The KJ3242X1-FA1 is a redundant Fieldbus H1 terminal block designed for the DeltaV™ S-series DCS. It provides a reliable physical interface between FOUNDATION™ Fieldbus H1 I/O cards and field instruments, ensuring uninterrupted digital communication even in critical or hazardous environments. This redundant design supports dual H1 I/O cards to maintain continuous operation during hardware faults or maintenance.
Key Features
Fault-Tolerant Redundancy
The terminal block enables dual H1 I/O card operation on the same segment, ensuring that communication with field devices remains uninterrupted during component failures or hot-swapping of cards.
Rugged Industrial Construction
The module features conformal coating compliant with ISA-S71.04 Class G3, safeguarding it against corrosive gases and humidity. It operates reliably over a wide temperature range of -40°C to 70°C and withstands mechanical stress from shocks up to 10 g and vibrations up to 0.7 g.
Hazardous Location Certification
Certified for ATEX Zone 2 and Class 1 Division 2, the KJ3242X1-FA1 is suitable for installation in high-risk industrial environments such as oil and gas, chemical, and petrochemical facilities.
Secure Mechanical Keying
A rotary keying system (Position D6) ensures only compatible H1 I/O cards are inserted, preventing electrical mismatches and installation errors.
Technical Specifications
| Feature |
Specification |
| Model / Part Number |
KJ3242X1-FA1 / 12P2575 |
| Communication Protocol |
Redundant FOUNDATION™ Fieldbus H1 |
| Input Power |
35 VDC at 500 mA |
| Operating Temperature |
-40°C to 70°C (-40°F to 158°F) |
| Relative Humidity |
5% to 95%, non-condensing |
| Vibration Resistance |
1 mm P-P (2–13.2 Hz), 0.7 g (13.2–150 Hz) |
| Shock Resistance |
10 g half-sine wave, 11 ms |
| Keying Position |
D6 |
| Hazardous Area Rating |
ATEX II 3G Ex ec IIC Gc |
| Dimensions |
Approx. 5.1 cm x 17.8 cm x 12.7 cm |
Applications
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Critical loop control for smart valves and multi-variable transmitters
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Asset management with full bi-directional communication for diagnostics
-
Remote I/O stations extending H1 segments into hazardous or distant areas
-
FOUNDATION™ Fieldbus networks requiring high availability and redundancy
FAQs
Q: Can this terminal block support dual H1 I/O cards?
A: Yes, it is designed for redundant H1 architectures, allowing continuous communication if one I/O card fails.
Q: Is the KJ3242X1-FA1 suitable for hazardous areas?
A: Yes, it is certified for ATEX Zone 2 and Class 1 Division 2 environments.
Q: What mechanical protections prevent incorrect installation?
A: A rotary keying system ensures only compatible H1 I/O cards can be connected.
Q: Does it require special maintenance?
A: No calibration or user service is needed. It is ruggedized for industrial reliability.
