ABB i-bus KNX Room Master Premium RM/S 2.1, Руководство по эксплуатации продукта

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ABB i-bus
®
KNX
Commissioning
© 2008 ABB STOTZ-KONTAKT GmbH 125
Minimum dwell period in fan speed
in s [0…65,535]
Options: 0…30…65,535
This parameter defines the dwell time for a fan speed of the fan until
it switches to the next higher or lower fan speed.
The input is made in seconds.
A setting of 0 means non-delayed switching. The minimum switch times
of the relay can be found in the
Technical data , on page 13.The dwell time in
a fan speed is only considered in automatic mode.
Enable limitations
Option: no
yes
•
yes:
Further parameters become visible:
At the same time, 4 communication objects for limitation of the fan speed are
enabled:
•
Limitation 1
, e.g. for frost/heat protection
•
Limitation 2,
e.g. for comfort operation
•
Limitation 3,
e.g. for night shutdown
•
Limitation 4,
e.g. for standby operation
Speed ranges (limitations) are defined for the fan with the speed limitation
function which may not be exceeded or undershot.
Four limitations are available. They can be used for example for the control
of various operating modes, e.g. frost/heat protection, comfort, night shut
down and standby. In normal cases the thermostat takes these operating
modes into account in its control variable for the actuator.
Important
The parameterised starting behaviour which is a technical characteristic of
the fan has a higher priority than a limitation or forced operation, i.e. if a
limitation is activated in fan speed 2 and a start-up behaviour is
parameterised via fan speed 3, the following behaviour will result: The fan
is in the OFF state and receives a control signal for fan speed 1. Initially
the fan operates at fan speed 3 (start-up speed) and then proceeds to fan
speed 2 which is defined by the limitation. The actual required fan speed 1
will not be achieved due to the limitation.