Title: Hardware Installation Guide.pdf
revision 6 — 393LNL-1320 Dual Reader Interface ModuleThe RS-485 communication is asynchronous, half-duplex, using 1 start bit, 8 data bits, 1 stop bit.80.1.3Control Output WiringSix form-C contact relays are provided for controlling door strikes or other devices. Load switching can cause abnormal contact wear and premature contact failure. Switching of inductive loads (strike) also causes EMI (electromagnetic interference) which may interfere with normal operation of other equipment. To minimize premature contact failure and to increase system reliability, contact protection circuit must be used. The following two circuits are recommended. Locate the protection circuit as close to the load as possible (within 12 inches [30cm]), as the effectiveness of the circuit will decrease if it is located further away.Use sufficiently large gauge of wires for the load current as to avoid voltage loss.Control Output Wiring12 VDCDC STRIKE+ -NCC NONONC+C