Are you upgrading? The EST3 SDU software will NOT program an EST4 panel. However, Carrier provides migration tools to convert SDU databases ( .e3d files) into EST4 format. For existing sites, continue using EST3 SDU v7.0.

Configure environmental compensation settings for smoke detectors.

Upgrading an EST3 system is a multi-step process that must be handled with care:

Technicians write Boolean logic statements (IF/THEN/ELSE) to dictate precise system behavior. For example:

You can use the SDU to set primary and alternate alarm sensitivity levels for each individual smoke detector. This allows the system to be more sensitive during unoccupied hours and less sensitive during the day to reduce nuisance alarms. You can also configure a setting for Signature detectors, generating a monitoring event before a full alarm is triggered.

Perhaps one of the most valuable aspects of the SDU is its built-in diagnostic utilities, which are crucial for commissioning and maintenance.

A built-in report generator creates detailed libraries of system data, including Signature device connection maps, which are invaluable for troubleshooting and compliance. Programming Workflow

Assign specific labels and text messages (location descriptions) to individual devices (e.g., Smoke Detector 1st Floor Lobby).

Click the "Verify" button (Checkmark icon). The SDU checks for:

This is where the bulk of work occurs. You define every detector, module, and sounder base.

For official EST3 SDU software downloads, technical bulletins, and license updates, visit the Carrier Global / Edwards EST Partner Portal (authorized distributors only). Unauthorized download links from file-sharing sites often contain viruses or corrupted libraries that brick panels.

The uses a proprietary rule-based programming language to define actions. Mastering this is key to advanced troubleshooting.

| Capability | Detail | |------------|--------| | Max panels | 64 | | Max devices per panel | ~20,000 | | Max rules per panel | ~5000 | | Programming model | Rule-Based (declarative) | | Networking | Token-ring, peer-to-peer | | Database format | MS Access (.mdb) | | Connection types | RS-232, modem, TCP/IP | | Simulation | Full offline emulation | | Reporting | Event logs, device inventory, C&E cross-reference |

Graphical matrix for mapping: