Chromalox IntelliTrace ITAS, Руководство по установке, Страница: 29 / 110

25
Extension Panels
Connecting an Extension panel or a
Remote Sensor Panel to the Main Panel
Below is the procedure to connect an Extension or
a Remote Sensor Panel to the Main Panel. The Main
Panel will manage the circuits in the Extension Panel
and the inputs of the Remote Sensor Panel.
Procedure:
1. Turn off the power to the system.
2. In the main panel (the one with a touch screen com-
puter) locate the distribution board (0113-10246)
and verify that jumpers J.16 and J.17 are set in po-
sitions 1 & 2.
3. Connect one end of the twisted pair cable into con-
nectors J15.1 (RX+) and J15.2 (RX-) on the distribu-
tion board of the Main Panel. Connect the other end
of the twisted pair cable into connector J15.1 RX+
and J15.2 (RX-) on the distribution board of the Ex-
tension panel.
Make sure that RX+ is connected to RX+ and RX- to
RX-. (See Diagram Below)
4. Connect the metallic shielding material (see wire
specification below) to the ground of the base panel
Distribution Module. However, DO NOT connect
the metallic shielding to the Extension Panel Distri-
bution Module. (See Diagram Below)
5. If the number of loops needs to be changed, power
up the system and login into the setup menu using
5731 as the password. Go to the “System” tab and
select the desired number of loops and press “OK”.
6. Cycle power to the system.
**Note - a 2 or 4 Circuit Extension Panel may be
added to a 6-48 Circuit system but not vice versa.
Main Panel
Extension Panel
RX+
RX-
GND
Main Panel
Distribution
Module
Extension or Remote
Sensor Panel
Distribution Module
RX+
RX-
GND
2,500 FT
(775 M) Max
Remote Sensor Panel
Figure 14
Extension Panel or Remote Sensor Panel
Considerations
Environmental influences such as EMI/RFI can compro-
mise the communication signal between the Extension
or Remote Sensor Panel and the Main Pane. The use of
properly designed cable will protect against and minimize
these influences.
Here is a design guide for extension panel wiring:
RS-485 Max. total cable length ........... 2,500 ft (800 M)
RS-485 Wire specification .........T1/E1/DSL compatible
24-AWG shielded cable
Chromalox uses the following vendor and cable item
as a viable reference:
Example Vendor: ................................................L-com
Typical Specification: ...2 - 120 Ohm (E1) Shielded Pair
Vendor Item Number: .................................... TSC9928
Available at: .............................. http://www.l-com.com