Emerson DeltaV KJ3242X1-BK1 S-Series H1 Interface Card

Overview

The Emerson KJ3242X1-BK1 is a Foundation Fieldbus H1 Interface Card for DeltaV™ S-Series distributed control systems. It enables bidirectional communication between the DeltaV controller and smart field devices (transmitters, actuators, valve positioners) over two independent H1 segments.

Technical Specifications

• Manufacturer: Emerson (Fisher-Rosemount)
• Model: KJ3242X1-BK1
• Also Known As: 12P4711X042
• Type: S-Series H1 Fieldbus Communication Card
• Communication Protocol: FOUNDATION Fieldbus H1; PROFIBUS PA compatible
• Channels: 2 independent H1 channels per card
• Transmission Rate: 31.25 kbps (H1 standard)
• Local Bus Power: 12 VDC @ 300 mA
• Fieldbus Power: 9 – 32 VDC @ 12 mA per port
• Weight: 0.3 – 0.5 kg
• Dimensions: 130 × 40 × 160 mm

Environmental & Safety Ratings

• Operating Temperature: −40 °C to +70 °C
• Shock: 10 g, ½ sine wave for 11 ms
• Vibration: 1 mm p-p (2–13.2 Hz); 0.7 g (13.2–150 Hz)
• Relative Humidity: 5 % – 95 % non-condensing
• Airborne Contaminants: ISA-S71.04-1985 Class G3
• Hazardous Area: ATEX II 3G Ex ec IIC Gc; Class I Div. 2 Groups A,B,C,D; Class I Zone 2 AEx/Ex ec IIC Gc
• Certifications: CE, ATEX, IECEx, FM

Key Features

• Dual H1 channels support flexible device integration per card
• Built-in diagnostics for module and network health monitoring
• Hot-swappable design minimizes downtime during maintenance
• Redundancy support for high-availability fieldbus architectures
• LED status indicators for quick fault detection

FAQ

Q: How many field devices can each H1 segment support?
A: Each H1 channel can typically support up to 8 field devices, depending on power budget and cable length.

Q: Is this card compatible with PROFIBUS PA devices?
A: Yes, the KJ3242X1-BK1 supports PROFIBUS PA communication in addition to FOUNDATION Fieldbus H1.

Q: Can I replace this card without shutting down the DeltaV system?
A: Yes, the card is hot-swappable when installed in a redundant configuration.

Installation Guidelines

1. Set the terminal block key to position D6.
2. Install the card into an available S-Series carrier slot.
3. Connect shielded twisted-pair fieldbus cable (e.g., Belden 3107A) to each H1 channel.
4. Ensure proper grounding and termination at the end of each H1 segment.

Selection Tips

• Choose KJ3242X1-BK1 when integrating FOUNDATION Fieldbus or PROFIBUS PA devices into DeltaV S-Series.
• Plan for one card per two H1 segments; calculate device count and cable length per segment.
• For redundant fieldbus loops, install paired cards with redundant terminal blocks.