Description
Product Description
Overview
The Emerson KJ3208X1-BA2 is a 32-channel Discrete Input (DI) module from the S-Series, designed for the DeltaV™ Distributed Control System. This high-density module monitors the ON/OFF status of field devices such as limit switches, pushbuttons, and relay contacts. Its compact design allows dense I/O installations while maintaining robust signal integrity and reliability.
Key Features
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High-Density Monitoring: Provides 32 discrete input channels per module, allowing up to 256 points per 8-wide carrier.
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Dry Contact Detection: Supports 24V DC dry contact sensing for accurate detection of field switch states.
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Advanced Signal Filtering: Software-configurable debounce filtering prevents false triggers from mechanical noise.
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Sequence of Events (SOE): Time-stamped input changes allow detailed event analysis for troubleshooting and process optimization.
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Diagnostics & Reliability: Channel-level LEDs indicate real-time status. Internal diagnostics continuously verify module health.
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Rugged and Hot-Swappable: Operates from -40°C to 70°C, with Class G3 conformal coating for harsh environments, and can be replaced without powering down the carrier.
Technical Specifications
| Feature |
Specification |
| Model Number |
KJ3208X1-BA2 |
| Module Type |
Discrete Input (DI) |
| Number of Channels |
32 |
| Input Type |
24V DC Dry Contact |
| Detection Threshold |
ON > 2 mA, OFF < 0.25 mA |
| LocalBus Power |
12 VDC @ 150 mA |
| Field Circuit |
60 VDC max, 1 A per channel |
| Isolation |
Field-to-system 1500 V AC |
| Operating Temperature |
-40 to 70 °C (-40 to 158 °F) |
| Shock |
10 g half-sine, 11 ms |
| Vibration |
1 mm P–P 2–13.2 Hz; 0.7 g 13.2–150 Hz |
| Airborne Contaminants |
ISA-S71.04 Class G3 |
| Relative Humidity |
5–95% Non-Condensing |
| Terminal Block Key |
B5 |
| Mounting |
S-Series I/O Carrier |
| Maintenance |
No user-serviceable parts; calibration not required |
Applications
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Monitoring motor starter auxiliary contacts.
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Detecting valve position (open/closed) via limit switches.
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Capturing panel pushbutton and selector switch status.
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Integrating signals from third-party control or safety systems, such as HVAC or Fire & Gas panels.
Installation Notes
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Remove all field power before inserting or removing the module.
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Non-sparking field circuits must be de-energized before handling.
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The rotary keying system ensures correct alignment with the corresponding I/O card.
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For Zone 2 hazardous area installations, follow DeltaV™ CHARM I/O installation guidelines.
FAQ
Q: Can this module be used in high-density control cabinets?
A: Yes, its 32-channel design allows compact, space-efficient installations with up to 256 points per carrier.
Q: Is the KJ3208X1-BA2 hot-swappable?
A: Yes, it can be replaced without powering down adjacent modules.
Q: Does this module require calibration?
A: No calibration is needed; it is factory-set and maintenance-free.
