Emerson IC694ALG221A PACSystems RX3i Four-Point Analog Current Input Module
A four-point analog current input module whose A revision and current-input identity must remain distinct from the voltage-input companion model.
Technical Summary
PRODUCT CONTEXTIC694ALG221A is a four-channel analog current input module used in compatible PACSystems RX3i and legacy Series 90-30 arrangements. It digitizes field-current signals for the controller while keeping the four input points under one catalog identity.
The final A suffix is part of the submitted hardware record. It should not be dropped during quotation, and the module should not be confused with IC694ALG220A, which is the four-point voltage-input variant.
Specifications
CONTROLLED DATAAnalog current
4
ALG IN 4
A
25 mA
100 mA
PNS version 1.00 for the base module class
Features
FUNCTIONAL DISTINCTIONSFour current channels
Groups four process-current inputs in one rack module for controller acquisition.
Clear controller identity
The ALG IN 4 class helps the project distinguish this module from voltage and higher-density analog families.
Revision traceability
The A marking can be preserved with the rack slot and project record for controlled maintenance.
About IndustryParts
https://www.industryparts.com/Controlled handling for IC694ALG221A
IndustryParts keeps the submitted IC694ALG221A identity, requested quantity and installed-system evidence together so a proposed supply can be checked before dispatch.
- Complete submitted model retained
- Installed-system evidence reviewed
- Quotation record kept with the enquiry
Compatibility
SELECTION BOUNDARIESSignal type
Confirm every connected transmitter and loop uses the current-input path expected by the project; voltage signals require the appropriate voltage module.
Rack and node
Verify the installed RX3i or Series 90-30 rack, remote-node support and configuration software before approving a spare.
Power budget
Include both the 5 V and isolated 24 V published loads in the rack calculation.
Replacement
SERVICE WORKFLOWCapture
Record the A label, slot, channel ranges, conductor polarity and loop-power arrangement.
Exchange
Isolate affected loops and rack power, retain the approved terminal assembly and install the exact current-input module.
Test
Apply known current values to each used channel and verify engineering scaling, alarm response and diagnostics.
FAQ
CUSTOMER DECISION SUPPORTIs IC694ALG221A a voltage-input module?
No. It is the four-point current-input execution; the similarly numbered IC694ALG220A is the voltage-input variant.
What power values matter for IC694ALG221A?
The manufacturer lists 25 mA from the 5 V backplane supply and 100 mA from isolated 24 V DC.
What should accompany a IC694ALG221A request?
Send the full A label, rack and slot, terminal style, loop ranges, polarity information and requested quantity.
Can IC694ALG221A be selected only by its four-channel count?
No. Signal type, rack support, project class and power budget must all match the installed record.
What commissioning evidence is suitable for IC694ALG221A?
Document known-current checks and the resulting engineering values, diagnostics and alarm behavior for every connected channel.
