Relay Output For System Fault Indication; Central Unit Malfunction Output - jotron WP 900 Manual Del Usuario

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Installation Guide
T942C- and T942C/2 Central Unit

1.3.14 Relay Output for System Fault Indication

1.3.15 Central Unit Malfunction Output

2003-01-08 / Rev.C
Adapters with the correct connections can be ordered from ATAB for both the 9-pin and
25-pin D-sub connectors.
A relay output on connector J10 is used to indicate Central Unit malfunction and can also
be used to indicate system fault (e.g. system fault can be when a module drops out or
reports an error). Several parameters in the Central Unit software determine how the
output is to be used.
T942C
S10B
1 2 3
RE02
Figure 22. Relay output connector.
If the relay output is set to indicate system fault it is possible to use output 3 on connector
J12 to indicate Central Unit malfunction only, see the next section 1.3.15 Central Unit
Malfunction Output on page 16.
As long as the Central Unit and system are operating properly the relay is actuated and has
a make-function.
Note: At power-up or restart of the Central Unit the relay is deactuated for about 20
seconds. If the relay is deactuated for more than 20 seconds either the Central Unit or
system is malfunctioning.
If the relay output on connector J10 is used to indicate both Central Unit malfunction and
system fault then output 3 on connector J12 (screw 4) can be used to indicate Central Unit
malfunction only.
Max load
100 mA
Figure 23. Connection of Central Unit malfunction only on pin 3 on J12.
The output capacity is max 100 mA and is of open collector-type, which means that to
produce a digital 12V signal a resistor must be connected between the output and +12V
(screw 1). If a digital signal is not wanted a relay can be connected between the output
and +12V.
As long as the Central Unit is operating properly the output is actuated.
Note: At power-up or restart of the Central Unit, the output is deactuated for about 20
seconds. If the output is deactuated for more than 20 seconds the Central Unit is
malfunctioning.
J10
2
Aux relay output
1
T942C
J12
1 +12V EXT OUT (CODE+)
2 OUT1 (CODE1)
3 OUT2 (CODE2)
4 OUT3
5 OUT4
6 GND EXT
TD 91684GB
16