4-12
888-2523-001
7/26/05
WARNING: Disconnect primary power prior to servicing.
Section 4 Theory of Operation
ATLAS Analogue
1.
One (1) is connected directly to the serial port on the micro-module and is
used for VT-100 diagnostics and for ISP (In-System Programming).
2.
Two (2) are for connection to an external computer or modem for serial
remote control applications (applications provided by customer).
3.
The last one is part of the External I/O Control cable which connects to the
Main Controller, but is not used at present.
d.
Five (5) parallel remote control connections.
1.
Two (2) Remote Control Input Connectors (J13 and J14)
2.
Two (2) Remote Status Output Connectors (J15 and J16)
3.
One (1) Remote Metering Output Connection (J17)
NOTE:
A complete listing of the parallel remote control connectors is given in Table 2-
11, Table 2-12, and Table 2-13 starting on page 39.
e.
External Interlock Terminal Block which gives a connection point for up to 6
external interlocks.
f.
Pump Module Control Cable connection.
g.
External System I/O Cable (J11) which is the connection point for an N+1
controller as well as Isolation load connections.
4.3.6.1
External Interlocks
There are 4 External Interlock terminals provided on J18 which will shut the transmitter
off when the circuit is opened. These are primarily to be used for the protection of
personnel. The External Interlock circuit requires a closed contact between J18-1 and
ground. This activates the External interlock relay K1 and allows the transmitter to turn
on. J18 is designed to allow connection of up to 6 serially connected external interlock
contacts. The transmitter is shipped with 6 jumpers installed on J18, bypassing all of the
external interlocks. The jumpers are installed as follows:
•
J18-1 to J18-2 - Interlock #1
•
J18-3 to J18-4 - Interlock #2
•
J18-5 to J18-6 - Interlock #3
•
J18-7 to J18-8 - Interlock #4
To use any one of the interlocks simply remove a jumper and connect the terminals to
the interlock contacts of the external device. If the device opens the contact, the
Summary of Contents for ATLAS ANALOGUE
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