Bell Control Technical Data 3700: Difference between revisions

installation
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The interface module features both a galvanically isolated, twisted pair wired interface to the control panel and an optional optical interface.
The interface module features both a galvanically isolated, twisted pair wired interface to the control panel and an optional optical interface.
== Installation ==
Primary power from the local disconnect is connected to the Power Supply Module at '''L1''' and '''L2'''. Earth safety is tied to the third terminal with the ground symbol (bonded to the chassis).
Strip input and output wires to 3/8 inch (10mm) for lever action terminals.
=== AX Systems ===
The 485 input connector is pinned out 1 for 1 the same as the AX tower connector. When multiple panels are used, parallel the data cable to all panels.
* REMOVE R3 and R4 from bottom of interface if not the end of the 485 line!
Four wires are enough as STATUS is not used at this time (Summer 2023), except for wireless and optical interfaces.
=== LX Systems ===
Sufficient power is available from the 12V terminals of the interface for LX terminals P+ and P- (power). Connect the DATA wires to T+ and T- (tower). If the data cable length drops the supply voltage, use a booster power suppply on the 12VDC input of the LX.


== Troubleshooting ==
== Troubleshooting ==