75
oc R6
oc R5
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9.3 Add-on and Alarm Outputs
For applications where, as well as the 4 standard outputs of the
regulator (R1 to R4) and the 3 outputs of each of the 4 add-on
modules, a further 1-2 outputs are required, there are 2 open-
collector outputs available for actuating external relays. These
add-on outputs can be used as switch outputs for pumps,
valves, etc. via a relay.
In addition, the controller is fitted with a potential-free alarm
output for the corresponding alarm devices. The relay output is
designed for safety extra-low voltage below 42 Volt AC/DC, 2A.
If a voltage of 230 volts is connected, this must be done via an
additional external relay.
This alarm output is always activated as soon as a fault is
detected by the controller. Only after the cause of the fault has
been eliminated and successfully acknowledged (see chapter
3.3) is the alarm output deactivated.
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