ABB SA/S 12.16.6.1 Product Manual - Knx Commissioning
ABB i-bus
®
KNX Commissioning
SA/S | 2CDC 505 056 D0207 99
If the value dropped below the threshold before the contact was
opened and is still below the threshold after renewed closing of
the contact, the below threshold value information is not sent
again as the status has not changed.
With the option always, the current is detected independently of
the contact position and continuously compared with the
current threshold. The status of the threshold value is only sent
when the status has changed.
Example
The SA/S contact is closed and the connected load fails. The
undershoot of the current threshold is detected, and the
changed status is sent. The contact of the SA/S is
subsequently opened.
The current flow is zero and still under the threshold. As the
status of the current threshold has not changed, this will not
be resent.
The new status is sent only after the next setpoint overshoot.
Evaluation delay (0...255s)
after contact closing
Options: 0…3..255
With this parameter, you can ensure that brief start-up currents or
current peaks caused by the switching process do not lead to an
unwanted current threshold signal.
This method masks out measured values.
After this time has timed-out, only then will the current threshold
status be sent via the communication object Status Current-Threshold
if it has changed.
• 0: The current threshold values are evaluated immediately after
contact change.
Scaling Current-Threshold in
Options: 10
mA
100
mA
With this parameter, the current threshold values grid is set. These
specifications apply for Current-Threshold 1 and Current-Threshold 2.
Current threshold 1 in mA
(scaled in 10 mA or 100 mA)
Options: 0…3…240
With this parameter, a current threshold can be entered in 10 or
100 mA steps.
In dependence on the parameter Scaling Current-Threshold in,
a threshold range of 0…2.4 A or 0…24 A results.
Value of hysteresis current threshold 1
Options: 3/25/50/100/200/500 mA
1/2/5 A
In order to avoid a continuous change of the threshold value state, the
thresholds for current recognition feature a hysteresis function. The
set Value of hysteresis current threshold ensures that a current