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ABB i-bus
EIB / KNX
4.3.7
Parameter window:
"Safety"
© 2004 ABB STOTZ-KONTAKT GmbH
Project design and programming
The safety functions enable a forced operation and the cyclical monitoring of
the object "Switch". The parameter window is enabled under "A: Function".
The forced operation sets the output to a defined state which cannot be
modified while the forced operation is active. Only the reaction on bus
voltage failure/recovery has a higher priority.
The forced operation can take place via a 1-bit or 2-bit object. When using
the 2-bit object, the output state is defined via the object value. At the end of
the forced operation, the output always follows the state of the switch object.
When using the 1-bit forced operation, the output state is fixed. The reaction
at the end of the forced operation can likewise be parameterised.
Please note the function diagram in section 3.2.6.
Parameter: "Enable function 'forced operation'"
The forced operation function can be enabled via this parameter. It can be
carried out via a 1-bit or 2-bit object.
Parameter: "Reaction on forced operation"
This parameter sets which state the output adopts during a forced operation.
It is only visible for 1-bit forced operation.
Parameter: "Reaction when forced operation ends"
This parameter is visible if forced operation is carried out via a 1-bit object.
The state of the relay at the end of the forced operation is defined here. The
output can open, close, follow the switch object or remain unchanged.
Parameter: "After bus voltage recovery the forced operation is" "
It can be set here whether forced operation is active or inactive after bus
voltage recovery. If forced operation is active, the status of the output can be
defined. If forced operation is inactive, the output normally follows the
settings in the "General" parameter window.
Parameter: "Enable cyclic monitoring of object 'Switch'"
The cyclic monitoring of the object "Switch" can be enabled here. If the
device does not receive any telegrams via the object "Switch" for an
adjustable period, the output is set to the safety position. The telegram value
can be "0" or "1".
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