Harris CZ1000F, Руководство по вводу в эксплуатацию

Страница: 34 / 162

2-8 888-2685-001 12/24/07
WARNING: Disconnect primary power prior to servicing.
Section 2 Installation Verification &
Ranger Commissioning Manual
2.7.1 External Interlocks
The transmitter has inputs for up to four
external interlocks on the External I/O
Board. Note that these 4 connections
comprise one interlock with 4 series
connection points. The transmitter, as
shipped from the factory, has no external
interlock connections. The Ranger External
I/O Connection schematic (843-5560-105 or
843-5549-141, sht 20) shows that Interlock
#1, J18-1 to J18-2, is usually used by a 3
port patch panel. The other three are to be
used at the customers discretion.
IMPORTANT:
The External Interlock circuit requires a closed connection between all of the fol-
lowing terminals on the External I/O Bd to turn the transmitter on:
•
J18 pins 1-2 (usually connected to 3 port patch panel)
•
J18 pins 3-4 (for customer use)
•
J18 pins 5-6 (for customer use)
•
J18 pins 7-8 (for customer use)
2.7.2 RF Mute Interlock
There are 2 more interlock connections on J18 which can be used to apply an RF Mute;
instead of a Fault OFF condition as discussed above. This could be used for RF switch
changeover or a dummy load thermal interlock. The connections are:
•
J18-9 to J18-10
•
J18-11 to J18-12
!
CAUTION:
THE RF MUTE INTERLOCK CONNECTIONS ARE NOT TO BE USED IN ANY
SITUATION WHERE PROTECTION OF PERSONNEL IS AN ISSUE
The required fault-off and rf-mute interlocks have been properly wired. These
interlock requirements may vary from site to site.
Ext.
I/O
Bd.
J18
To detector
Circuit
External Interlock jumpers
installed on-site.
Customer Interlock #1
Customer Interlock #2
Customer Interlock #3
Customer Interlock #4
1
2
3
4
5
6
7
8
These connections
are permanent
on PC board.
Interlock Bypass jumper
If these 3 interlocks are
not used, a single jumper
from J18-3 to J18-8 is
recommended