Emerson KJ3221X1-BA3 DeltaV 8-Channel HART AO Card Specs

The KJ3221X1-BA3 DeltaV 8-channel HART AO card from Emerson delivers modulating output signals to field devices. This card drives valves, positioners, and actuators with precise current loops and HART digital data. Engineers select this card when they need accurate analog control and rich device diagnostics.

Technical Specifications

Parameter	Specification
Product Model	KJ3221X1-BA3
Module Type	DeltaV 8-Channel HART AO Card
Output Type	4–20 mA current loop with HART overlay
Interface	Backplane connector, field wiring terminals
Mounting	DeltaV chassis slot
Operating Temperature	0°C to 60°C
Storage Temperature	-40°C to 85°C
Weight	Approx. 0.29 kg
Dimensions	Approx. 165 mm × 100 mm × 30 mm
Energy Storage	On-board capacitors for output smoothing
Component Count	8 output channels per card

Interface and Signal Details

The KJ3221X1-BA3 connects field wiring to the chassis backplane through a dedicated connector. Screw terminals secure outgoing conductors and resist vibration during continuous plant operation. Therefore, technicians achieve firm terminations without soldering or adapter kits. The card occupies one chassis slot and draws power from the shared rail.

Physical and Environmental Parameters

The card measures roughly 165 mm by 100 mm by 30 mm and weighs about 0.29 kg. Its compact housing fits crowded cabinets and keeps panel layout efficient. Meanwhile, the 0°C to 60°C operating range covers typical control room conditions. The on-board smoothing circuitry steadies output levels before signals reach field devices.

Why This Card Matters

Plant teams value the KJ3221X1-BA3 for its stable output and HART diagnostics. The energy storage components suppress ripple during load changes. As a result, control loops stay tight and valve hunting drops noticeably. Technicians also appreciate the clear channel labeling and quick slot access.