N-1000-III/IV
6-12
6-12
6-12
6-12
6-12
Section 6: Wiring Requirements
Section 6: Wiring Requirements
Section 6: Wiring Requirements
Section 6: Wiring Requirements
Section 6: Wiring Requirements
Figure 6-11.
Typical N-485 Multi-drop Configuration.
This is a typical configuration
with an N-485-PCI-2 at one end of the line and a panel at the other end. The AEP-3 is connected
to the N-1000-III/IV at J1. See Figure 6-10 for details of the AEP-3 connection.
6-6-4: PC to N-485-PCI-2
The N-485-PCI-2 uses a 9 pin female connector which will plug into a standard 9
pin serial port on the PC. If the PC is configured for use with a serial expansion
device, an adaptor cable or shell may be required. Refer to the N-485-2 Adapter
Installation Guide (TD1077) for proper configuration. Figure 6-11 shows a typical
configuration with an N-485-PCI-2 at one end of the line and a panel at the other
end.
6-6-5: N-485-PCI-2 to Panel
The NC2021/NCP 2021 cable is recommended (twisted pair, 24 gauge overall
shielded cable with a characteristic impedance of 120 ohms and a capacitance of
20 pf/ft. (or lower) should be used). Consult the device installation guide for cable
lengths and configurations.
The Communications Type Selection Jumper JP1 must be set to the RS-485
position 2 & 3. For proper communication, jumpers JP2, JP3 and JP4 must also
be properly configured on each panel. Refer to Section 6-6-8 and Figure 6-13 for
details.
For 485 multi-drop communications, the shield should be connected at both ends
and
only
to the screw terminals labeled 485 Shield as in Figure 6-14. The shield
should be tied to the earth ground only at the PCI or HUB.
For a typical configuration using the N485DRLA Digital Redundant Loop Adapter
see Figure 6-15.
485 Dropline up to 31 control panels,
using NCP2021-WH-A, NC2021-GY-A.
Maximum overall distance 4000' (1220 m)
PCI-2
Personal Computer
running NCI software
AEP-3
AEP-3