Search Fire Alarm Questions for "EST3" | Fire Alarm Resource Center

What is the EST3 network capacity and how does its peer-to-peer token ring architecture work?

The EST3 network supports up to 64 panels with a capacity of 2,500 addressable points per panel and a total network length exceeding 90 km (Page 1, 2) [1]. It...

Edwards Est EST3Answered3mo ago60 views

What does the 3-MODCOM do on an EST3, and what reporting formats does it support?

The 3-MODCOM is a modem communicator module that provides dialer and modem functions for the EST3 system, connecting it to the switched telephone network (Page...

Edwards Est EST3Answered3mo ago59 views

How does the EST3 perform battery testing, and what does a battery trouble after installing new batteries indicate?

The EST3 performs battery testing through automated monitoring and manual technician procedures. The system automatically identifies defective power supplies...

Edwards Est EST3Answered3mo ago80 views

How do I decode an EST3 trouble address like '03030681'?

To decode the address 03030681, use the standard PPCCDDDD format where PP is the cabinet, CC is the card or slot, and DDDD is the device or pseudo point (Page...

Edwards Est EST3Answered3mo ago85 views

How many addressable devices can an EST3 node support, and what cards provide the SLC loops?

An EST3 node supports up to 10 addressable device circuits per cabinet (Page 18) [4]. These signaling line circuits (SLC) are provided by the 3-SSDC1 Signature...

Edwards Est EST3Answered3mo ago92 views

What must be done before replacing a 3-CPU3 card on an EST3?

Before replacing a CPU module, you must disconnect the standby battery and then remove AC power from the control panel to prevent equipment damage (Page 253)...

Edwards Est EST3Answered3mo ago55 views

The EST3 is showing a network communication trouble — how do I determine which segment or node is causing it?

To determine the failed segment, identify where the network has split into independent sub-networks by checking which panels are still communicating. The fault...

Edwards Est EST3Answered3mo ago79 views

Can the EST3 program be uploaded from the panel if the SDU project file is lost?

I couldn't find a procedure in the manuals for uploading a project database from the panel to recover a lost SDU file. The manuals define downloading as the...

Edwards Est EST3Answered3mo ago62 views

What causes a MAPFAULT trouble on an EST3 and how do you clear it?

A Map Fault is caused by a mismatch between the expected circuit database and the actual devices or wiring conditions found on the Signature loop (Page 316)...

Edwards Est EST3Answered3mo ago115 views

How do I isolate a ground fault on an EST3 Signature loop?

To isolate a ground fault (defined as 10 kΩ or less to ground), you must systematically narrow down the location by selectively disconnecting portions of the...

Edwards Est EST3Answered3mo ago76 views

When replacing an EST3 with an EST4, can the existing backbox and wiring be reused?

Yes, EST4 is designed for backward compatibility with EST3 infrastructure. You can reuse existing 3-CAB series backboxes and most field wiring, including...

Edwards Est EST4Answered3mo ago59 views

How does the EST4 drag-and-drop programming tool differ from the EST3 programming workflow?

The EST4 Configuration Utility (CU) replaces the manual look-up tables and compilation requirements of the EST3 with a graphical tree view that matches the...

Edwards Est EST4Answered3mo ago67 views

How do I migrate an existing EST3 system configuration to an EST4, and which EST3 devices are forward-compatible?

To migrate an existing system, configuration data is transferred from the EST3 project to the EST4 platform using the Configuration Utility (CU) (Page 5) [1]....

Edwards Est EST4Answered3mo ago63 views

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