AMM42 S4 Yokogawa 2-Wire Transmitter Input Multiplexer Module
AMM42 S4
AMM42 S4 is a legacy Yokogawa multiplexer input module for two-wire transmitter signals in supported CENTUM analog-I/O assemblies. The exact board, revision and external connection must be matched from the installed hardware.
Scope note: AMM42 S4 is supplied as legacy transmitter-input multiplexer module; terminal hardware, cables and system engineering are selected or verified separately.
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+86 181501176852-Wire Transmitter Input Multiplexer Module
The Yokogawa AMM42 S4 is a legacy Yokogawa multiplexer input module for two-wire transmitter signals in supported CENTUM analog-I/O assemblies. The exact board, revision and external connection must be matched from the installed hardware.
Application guidance: like-for-like maintenance of documented legacy transmitter-input hardware. spare identification using the AMM42 S4 nameplate and board labels. migration surveys for legacy analogue transmitter loops.
Ordering note: Reproduce AMM42 S4 exactly and confirm the installed hardware, terminal arrangement, project release and site requirements.
| Manufacturer | Yokogawa Electric Corporation |
|---|---|
| Full part number | AMM42 S4 |
| Product type | legacy transmitter-input multiplexer module |
| System family | Legacy CENTUM analog I/O |
| Signal / function | Two-wire transmitter analogue input |
| Channel scope | Multiplexed input capacity is assembly and termination dependent |
| Isolation | Confirm from the installed assembly documentation |
| Performance reference | Signal update and accuracy depend on the complete legacy I/O assembly |
| External connection | Match the installed rack, field termination, connector board and associated cables |
| Ordering identity | S4 is a style identifier; order AMM42 S4 only after confirming the installed board assembly, revision and termination documentation. |
| Official document | Yokogawa CENTUM Legacy Hardware Reference |
Record every loop, range, transmitter supply, scaling, alarm setting, terminal number and board revision before migration.
AMM42 S4 is a legacy Yokogawa multiplexer input module for two-wire transmitter signals in supported CENTUM analog-I/O assemblies. The exact board, revision and external connection must be matched from the installed hardware.
AMM42 S4 is typically selected for like-for-like maintenance of documented legacy transmitter-input hardware. Confirm the installed system and application requirements before use.
Install AMM42 S4 only in the documented legacy analogue-input assembly with matching board revision and field termination. Verify two-wire transmitter power, signal range and database scaling, then test each connected loop against its recorded value and alarm settings.
AMM42 S4 is intended for the documented two-wire transmitter-input service in supported legacy CENTUM analogue-I/O assemblies. Confirm each loop's signal range, transmitter supply and termination before using the replacement board.
Before replacing AMM42 S4, photograph the model/style label, board codes and connectors. Record the revision, rack position, terminal and cable references, loop ranges, transmitter supplies and controller scaling.
AMM42 S4: Record every loop, range, transmitter supply, scaling, alarm setting, terminal number and board revision before migration.
Provide clear AMM42 S4 nameplate and board photos, quantity, installed system and node, style/revision, terminal hardware, cable, project release, field signal, destination and delivery date.
Send the exact AMM42 S4 nameplate, quantity, installed Yokogawa system, terminal hardware, destination and clear photos. Availability, condition and compatibility will be confirmed before quotation.
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