Connecting External Cables
Installation Handbook, AutroSafe Interactive Fire Detection System, Release 4, 116-P-ASAFE-INSTALL/DGB Rev. I, 2014-04-01,
Autronica Fire and Security AS
Page 45
9.6 RS-485 Connections to Terminal Block, List L1
Twisted pair, shielded cable is required.
Maximum 100Ω resistive loss.
Maximum total length 1200m.
Maximum cable capacitance 150 nF.
The protection shown in the schematic of port equivalent above is
made for 1kV High Energy Surge. In addition, the connection is
protected against wrong connections between Serial Reference and
other signals (X->Signal ref, Z->Signal ref, A->Signal ref, B->Signal
ref) for voltage up to 29V DC.
To Next Page
Loading...
Need help?
General