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S4 Mains powered interface unit
Confirmation Input mode
The purpose of a Confirmation Input is to allow the system to monitor the correct operation of an output,
which relies on external equipment sending back the correct signal. In this mode use a 470ohms end-of-line
resistor with another 470ohms resistor being switched in parallel across the Z+ and Z- terminals to provide
the feedback signal.
Mode
Confirmation Input
4188-968 issue 2_Part 2_09-10_S4 mains interface
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settings
Associated output
Normal delay
Confirmation delay
Input normally
Input type
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Commissioning information
notes
The selected output channel is associated with the
confirmation input channel. Note channel 1 cannot be
selected for associated output as it is already being used
as an output, however this would be possible if the
channel was configured as a combined input/output
channel.
The Normal delay is the time before a confirmation
input is accepted by the interface, this will filter any
noise or spurious signals, commonly know as "bounce".
This time is the debounce period.
This is the delay time before a confirmation input is
accepted by the interface and is how long the interface
waits for a confirmation signal before it brings up a
fault message.
See page 6.
The verbose setting will generate true/false supervisory
messages whenever the input changes state, as well as
generate timeout fault if the change does not occur
before the delay has elapsed.
The silent setting will only give a timeout fault.
7
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