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N-1000-III/IV
6-16
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Section 6: Wiring Requirements
Section 6: Wiring Requirements
Section 6: Wiring Requirements
Section 6: Wiring Requirements
Section 6: Wiring Requirements
Figure 6-14.
485 Multi-drop Connection with Shielded Cable.
A 485 communication
loop with a PCI at the end of the line.
P
Panel must be
anel must be
ear
earth grounded.
th grounded.
N-485 A+
N-485 B –
2
3
Red
Black
Red
Black
N-1000-III/IV
P
Panel must be
anel must be
ear
earth grounded.
th grounded.
P
Panel must be
anel must be
ear
earth grounded.
th grounded.
From the N-485-PCI-2 to the N-1000-III/IV
and from the N-1000-III/IV to the N-1000-III/IV
use twisted 24 gauge NC2021-GY-A
or NCP2021-WH-A overall shielded
cable with a characteristic impedance
of 120 ohm and a capacitance
of 20 pf./ft. (or lower)
N-485-PCI-2 to PC:
Standard 9 pin female
connector plugs into the
serial port of the PC
The cable shield should
be connected at both
ends and only to the
TB9 position 12.
N-485-PCI-2
RED wire
RED
wire
GREEN wire
BLACK
wire
WHITE wire
BLACK wire
to N-1000-III/IV
TB7
TB9
485 cable shield only
12
N-485 A+
N-485 B –
2
3
Red
Black
Red
Black
N-485 A+
N-485 B –
2
3
Red
Black
JP4 Off
JP 2 & 3 Off
TB7
TB7
Connect both shields
but leave this
connection floating
DO NOT TIE TO EARTH
Both
Pins
TB9
485 cable shield only
12
TB9
485 cable shield only
12
The Communications
Type Selection Jumper JP1
must be set to the RS-485
position 2 and 3.
used with
N-1000-II
(Refer to
manual
for details)
N-485
Communications
Adapter
N-485-
API-2
JP4 Off
JP 2 & 3 Off
JP4 On
JP 2 & 3 Off
Note: