Parameter Window A: Safety - ABB i-bus KNX Product Manual

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ABB i-bus KNX
Commissioning
3.2.5.6

Parameter window A: Safety

In this parameter window, all settings for the function Safety are undertaken.
The forced operation (a 1 bit or 2 bit communication object per output) or safety priority (three independent
1 bit communication objects per Energy Actuator) sets the output in a defined state, which can no longer
be changed, as long as forced operation or safety priority is active. The parameterized reaction on bus
voltage failure and recovery has a higher priority.
The isolation of the three communication objects Safety Priority x (x = 1, 2, 3) is undertaken in parameter
window Function, page 35. In this window, the monitoring time and the telegram value to be monitored are
set. If a telegram is not received within this monitoring time, the output will assume the safety position. The
determination is implemented in the parameter window A: Safety, which will be described in the following.
As a direct contrast to the three safety priorities, an independent communication object Forced Positioning
is available for each output.
The forced positioning can be activated or deactivated via a 1 bit or 2 bit communication object. Using the
2 bit communication object, the output state is defined directly via the value.
The switch state after the end of function Safety can be set using the parameter Contact position when
forced operation and all safety priority x end.
If multiple demands occur, the priority is defined as follows in accordance with the sequence in parameter
window A: Safety:
•
Safety priority 1 (highest priority)
•
Forced operation
•
Safety priority 2
•
Safety priority 3 (lowest priority)
With the option inactive, the Safety priority x or the Forced positioning and the respective communication
object are not considered and omitted in the priority sequence.
The line position gives the order of
priority for forced operation
<−−− NOTE
Enable "Safety priority x"
on "Function"
<−−− NOTE
70 2CDC 505 084 D0203 | SE/S 3.16.1