Soutwest Microwave MicroWave 330, Руководство по установке

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6.2 Communications Wiring
Figure 23 shows the typical RS422 wiring diagram for the alarm polling network. This example uses the Relay
Control Module II (RCM II) as the system controller connected to a Relay Output Module II-16 (ROM II-16)
and a MicroWave 330 receiver. The MicroWave 330 is located on the perimeter. The RCM II and the ROM II-
16 are located in the control room for relay output interface to other control room devices.
The communications is RS422 and must use a 22 or 24 gauge twisted, stranded, shielded pair wire. Fiber optic
devices can be used as well. Since this RS422 communications format is a point to point configuration, no
termination device is required for the last unit on the line.
All the RS422 communications wiring is from the transmit side of one device to the receive side of the next
device with the wiring from TX + to RX + and TX – to RX – as shown in Figure 23.
TB
5
TB
3
Figure 23 – MicroWave 330 Communications Wiring
6.3 Tethered Wiring between Transmitter and Receiver
Figure 24 shows the typical wiring from MicroWave 330 Transmitter to Receiver in the Tethered configuration.
The “Mod Out” terminal from the receiver is connected to the “Modulation Input” terminal on the transmitter
for synchronous operation. Switch S2 “Modulation” would be set to “External”. The “Tamper Switch” terminal
from the transmitter is connected to the “Input Ext Tamper” terminal on the receiver. This puts the transmitter
tamper in the alarm polling network.
The 10.5 to 60 VDC input power can be directly connect to the transmitter and receiver or additional wiring can
be included in the connection from the transmitter and receiver to bring power down this line for both
transmitter and receiver. Make sure the wire gauge is correct to cover the voltage drop to maintain the correct
input voltage.