What is Emerson KJ2231X1-EA1?

It is an Emerson DeltaV SIS relay module for interfacing safety logic to an external switched circuit.

What input power is specified for Emerson KJ2231X1-EA1?

The manufacturer sheet specifies 24 VDC at 70 mA.

What DC relay-contact rating applies to Emerson KJ2231X1-EA1?

The DC contact rating is 30 VDC at 2.5 A.

What AC relay-contact rating applies to Emerson KJ2231X1-EA1?

The AC contact rating is 250 VAC at 2.5 A.

Can Emerson KJ2231X1-EA1 be removed with system power energized?

No. Emerson states that this unit cannot be removed or inserted with system power energized.

Does Emerson KJ2231X1-EA1 require calibration?

No. Emerson states that calibration is not required and the module must not be disassembled.

Which ambient range is documented for Emerson KJ2231X1-EA1?

The instruction sheet lists -40 to +70 degrees C with 5 to 95% non-condensing relative humidity.

KJ2231X1-EA1

Name: KJ2231X1-EA1
Brand: Emerson
SKU: KJ2231X1-EA1

SIS Relay Module

Product image is representative; revision or series may vary. Contact us to request a specific version.

Product Describe：

Emerson KJ2231X1-EA1 is a DeltaV SIS relay module that translates a 24 VDC safety-system command into relay-contact switching for approved AC or DC load circuits. Its fixed hardware requires no field calibration and must be de-energized before insertion or removal.

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Technical specifications for KJ2231X1-EA1

Manufacturer:

Emerson
Product Category:

DCS Systems
Spare Part Number:

KJ2231X1-EA1
Estimated shipping dimensions:

11x2.5x11cm
Weight:

0.16 kg
Tariff Code:

8537101190
Counliy of origin:

USA
Module type:

DeltaV SIS relay module
Input power:

24 VDC at 70 mA
DC relay contact:

30 VDC at 2.5 A
AC relay contact:

250 VAC at 2.5 A
Ambient temperature:

-40 to +70 degrees C
Relative humidity:

5 to 95% non-condensing
Shock:

10 g half-sine for 11 ms
Vibration:

1 mm peak-to-peak from 5 to 16 Hz; 0.5 g from 16 to 150 Hz
Airborne contaminants:

ISA-S71.04-1985 Class G3
Hazardous-area marking:

II 3 G; EEx nC IIC T4
Maintenance:

No user-serviceable parts; no calibration
Removal / insertion:

System power must be de-energized

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Information

Overview Manuals Common Applications Product Precautions

Within a DeltaV SIS cabinet, KJ2231X1-EA1 provides the relay boundary between the safety logic command and an externally powered switched load.

Transfers a safety output command through relay contacts
Supports approved DC and AC switched-load arrangements
Provides a fixed interface with no field-calibration task
Requires system-power isolation before module insertion or removal

Select the contact circuit from the approved cause-and-effect and loop drawings, then keep the external load source separate from the module-input supply during testing.

Acceptance should prove the commanded relay state, contact transition, connected-load response and final safe condition without exceeding the stated contact boundary.

Important Notice: Confirm whether the connected circuit uses the documented DC or AC contact rating before conductors are transferred.

KJ2231X1-EA1 Manuals & Downloads

KJ2231X1-EA1 Technical Reference (PDF)KJ2231X1-EA1 Installation & Commissioning Guide (PDF)

The Technical Reference records module-input, relay-contact and environmental limits. The Installation & Commissioning Guide focuses on power isolation, external load wiring and SIS proof-test acceptance.

Safety shutdown interfaceTransfer a DeltaV SIS command to an approved external shutdown circuit through the documented relay contact.

Alarm annunciation relaySwitch an AC or DC annunciation load that remains within the applicable contact rating.

Interposing contact serviceSeparate the logic-side command from the externally wired load circuit at the relay interface.

SIS proof testingExercise the commanded state and confirm contact response and final equipment action against the validation record.

KJ2231X1-EA1 contains fixed relay hardware; service work must protect both the 24 VDC module input and the separately powered external contact circuit.

1Record the complete KJ2231X1-EA1 marking and installed position.

2De-energize system power before inserting or removing the module.

3Isolate the external switched-load source before moving conductors.

4Verify the module input is supplied from the approved 24 VDC circuit.

5Keep DC loads within the documented 30 VDC, 2.5 A contact rating.

6Keep AC loads within the documented 250 VAC, 2.5 A contact rating.

7Do not disassemble or attempt to calibrate the relay module.

8Prove the command, contact state, load response and safe condition before release.

Technical notes

Emerson states that the unit cannot be removed or inserted with system power energized, contains no user-serviceable parts and requires no calibration. The exact sheet lists Nemko 02ATEX431U, EEx nC IIC T4 and an ambient range of -40 to 70 degrees C.

FAQ View All FAQ

What is Emerson KJ2231X1-EA1?

It is an Emerson DeltaV SIS relay module for interfacing safety logic to an external switched circuit.
What input power is specified for Emerson KJ2231X1-EA1?

The manufacturer sheet specifies 24 VDC at 70 mA.
What DC relay-contact rating applies to Emerson KJ2231X1-EA1?

The DC contact rating is 30 VDC at 2.5 A.
What AC relay-contact rating applies to Emerson KJ2231X1-EA1?

The AC contact rating is 250 VAC at 2.5 A.

Can Emerson KJ2231X1-EA1 be removed with system power energized?

No. Emerson states that this unit cannot be removed or inserted with system power energized.
Does Emerson KJ2231X1-EA1 require calibration?

No. Emerson states that calibration is not required and the module must not be disassembled.
Which ambient range is documented for Emerson KJ2231X1-EA1?

The instruction sheet lists -40 to +70 degrees C with 5 to 95% non-condensing relative humidity.

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