IISAC01 6638096B1
Single-Loop Analog Control Station · Local single-loop control station for monitoring process variable, set point and control output in a Harmony control loop.
Lifecycle note: Use the unit nameplate and current official documentation as final references before approving a replacement.
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+86 15359408275Single-Loop Analog Control Station · ABB Harmony / Bailey INFI 90
ABB IISAC01 6638096B1 is a local single-loop analog control station used with a Harmony controller and CIO-100 control I/O block.
The station displays process variable, set point and control output, while FC 80 in the controller defines basic, cascade or ratio operation and related station behavior.
For replacement, verify whether the installation is a current-bypass or electric-drive/pulse-positioner station, preserve the controller strategy, RS-485 connection, CIO block arrangement and NKCS adapter-cable configuration.
| Manufacturer | ABB |
|---|---|
| Model | IISAC01 |
| Part number | 6638096B1 |
| Product type | Single-loop analog control station |
| System family | Harmony / Bailey INFI 90 |
| Displayed loop values | Process variable, set point and control output |
| Controller interface | CIO-100 block over RS-485 |
| Controller function code | FC 80 control station |
| Control modes | Basic, cascade or ratio as configured |
| Bypass applications | Current bypass or electric-drive/pulse-positioner bypass |
| Current-bypass adapter | NKCS03 |
| Electric-drive bypass adapters | NKCS04 and NKCS05 |
ABB IISAC01 6638096B1 provides local indication and operator adjustment for a Harmony control loop by displaying process variable, set point and control output.
ABB IISAC01 6638096B1 communicates through the CIO-100 control I/O block over an RS-485 serial link, while controller function code 80 defines the station interface.
ABB IISAC01 6638096B1 can support basic, cascade or ratio station behavior when the corresponding FC 80 parameters are configured in the Harmony controller.
Identify whether ABB IISAC01 6638096B1 is wired as a current-bypass station or an electric-drive/pulse-positioner bypass station because their CIO and adapter-cable arrangements differ.
ABB IISAC01 6638096B1 can drive the output when configured for automatic bypass after communication loss or when the operator selects manual override, subject to the approved control strategy.
Test PV, SP and CO indication, set-point keys, auto/manual transfer, bypass behavior, RS-485 communication and the controlled field output after installing ABB IISAC01 6638096B1.
Provide the complete ABB IISAC01 6638096B1 label, station type, CIO blocks, NKCS cable numbers, controller strategy, faceplate photos, quantity and destination.
Send the complete IISAC01 6638096B1 catalog number, revision, quantity, destination and nameplate photo. Identification details will be checked before quotation.
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