Emerson KJ4001X1-BE1 8-Wide IO Carrier

Emerson DeltaV KJ4001X1-BE1 8-Wide I/O Carrier with Shield

Product Introduction

The KJ4001X1-BE1 is an 8-wide I/O carrier designed for Emerson’s DeltaV system. Its alternative part number is 12P0818X072. This carrier physically supports up to eight I/O modules in a single assembly. Additionally, it comes with an integrated shield that reduces electromagnetic interference. Many engineers select this carrier for distributed control systems (DCS) in harsh environments. Furthermore, it accepts a wide input voltage range from 12.6 to 30 VDC. Local bus power output reaches 15 A at 12.6 VDC. Hazardous area certifications include ATEX and FM for Zone 2 and Div. 2 locations.

Technical Specifications

The KJ4001X1-BE1 operates on a flexible DC input range. Its minimum input is 12.6 VDC. Maximum input goes up to 30 VDC. Local bus power provides 15 A at 12.6 VDC to connected I/O modules.

Key electrical parameters include:

• Input Voltage Range: 12.6 to 30 VDC

• Local Bus Power Output: 12.6 VDC at 15 A maximum

• Number of I/O Slots: 8 positions (8-wide)

• Shield type: Integrated metallic shield for noise reduction

Moreover, the carrier distributes both power and communication to all inserted modules. Each slot receives properly regulated local bus power. Therefore, no separate power wiring is needed for individual I/O cards.

Hazardous Area Certifications

The KJ4001X1-BE1 carries multiple international approvals for explosive atmospheres.

Certifications include:

• ATEX: II 3G Ex ec IIC Gc (FM16ATEX0056U, FM21UKEX0017U)

• FM US: Class I, Division 2, Groups A, B, C, D

• FM US Zone: Class I, Zone 2, AEx/Ex ec IIC Gc (FM17US0286U)

• FM Canada: FM17CA0145U

Consequently, this I/O carrier suits Zone 2 and Div. 2 hazardous locations. Protection type “ec” (increased safety) ensures no arcs or sparks during normal operation. Always follow local wiring codes for “ec” installations.

Environmental and Mechanical Ratings

This I/O carrier survives extreme industrial conditions. Its ambient temperature range spans -40°C to +70°C. Relative humidity tolerance is 5% to 95% non-condensing.

Mechanical specifications include:

• Shock: 10g ½ sine wave for 11 msec

• Vibration: 1 mm peak-to-peak from 2 to 13.2 Hz; 0.7g from 13.2 to 150 Hz

• Airborne contaminants: ISA-S71.04-1985 Class G3 (corrosive gas resistance)

Additionally, the unit contains no user-serviceable parts. Never disassemble it for any reason. Calibration is never required because all parameters are factory-fixed.

Installation and Length Restrictions

Install the KJ4001X1-BE1 inside a DeltaV enclosure or panel. First, mount the carrier securely using its four corner screws. Then insert I/O modules into the eight slots. Finally, connect the LocalBus Extender cables if needed.

Critical installation rules:

• System power must be de-energized before removing or inserting any carrier

• Do not exceed 6.5 meters total combined length of I/O carriers and LocalBus Extender cables

• Interconnecting cables between enclosures must run inside metallic conduit

• Never remove or insert this carrier with power applied

Furthermore, plan your cabinet layout carefully. The 6.5-meter limit applies to the entire daisy-chained carrier group. Exceeding this length may cause communication errors.

Shield Function and Benefits

The KJ4001X1-BE1 includes a factory-installed shield. This shield reduces electromagnetic interference (EMI) from nearby equipment. Specifically, it protects analog and digital signals passing through the carrier.

Benefits of the integrated shield:

• Lower noise on analog input channels

• Improved signal integrity in high-EMI areas (e.g., near VFDs)

• No need for external shielding add-ons

• Maintains hazardous area certification when properly grounded

Therefore, use this shielded version for plants with variable frequency drives or welding equipment. For low-EMI environments, Emerson also offers non-shielded carriers.

Common Applications

You typically find the KJ4001X1-BE1 in:

• DeltaV distributed control systems (DCS)

• Remote I/O panels near field devices

• Safety instrumented systems (SIS) with DeltaV

• Retrofit projects replacing older I/O carriers

Specifically, this 8-wide carrier hosts analog, digital, and HART I/O modules. One carrier can mix different I/O types in any slots. Many chemical plants, power stations, and refineries use this carrier daily.

Packaging List

• 1 x KJ4001X1-BE1 8-Wide I/O Carrier with Shield

• 1 x anti-static protective bag

• 1 x mounting screw kit (4 screws and washers)

• 1 x quick start guide (paper copy)

Note: No certificates or warranty documents are included in this package.

Shipping Information

We ship worldwide using FedEx, UPS, or DHL. Each carrier receives ESD-safe packaging plus foam padding. Tracking numbers are provided within 24 business hours.

Frequently Asked Questions (FAQ)

1. Can I mix different I/O module types on the KJ4001X1-BE1?
Yes. This 8-wide carrier accepts analog, digital, and HART I/O modules in any combination. Each slot operates independently.

2. What happens if I exceed 6.5 meters of total carrier length?
Communication errors may occur on the LocalBus. Signal timing margins are guaranteed only up to 6.5 meters total length.

3. Do I need to ground the shield separately?
The shield connects internally to the carrier’s ground terminal. Connect that terminal to a clean instrument ground for best performance.

4. Is the KJ4001X1-BE1 compatible with older DeltaV I/O modules?
Yes, it works with most DeltaV series I/O modules. Check Emerson’s compatibility matrix for very old legacy modules (pre-2005).

5. Can I remove a failed I/O module while the carrier stays powered?
No. The KJ4001X1-BE1 requires complete system power de-energization before removing or inserting any module or carrier.