ABB i-bus KNX Product Manual - page 45
ABB i-bus
KNX
Commissioning
VAA/S x.230.2.1 | 2CDC 508 101 D0201 43
3.3.3 Communication
objects
Output A
No.
Function
Object name
Data type
Flags
10
Control value, switch
Output A
1 bit
DPT 1.001
C, W
This communication object is enabled if in
, page 28,the parameter Control value is received
as
is set with the option 1 bit.
The VAS/S receives ON or OFF telegrams from the thermostat.
Telegram value
0 = OFF
1 = ON
10
Control value, continuous (PWM)
Output A
1 byte
DPT 5.001
C, W
This communication object is enabled if in
, page 28,the parameter Control value is received
as
is set with the option 1 byte.
The communication object value [0…255] determines the variable mark-to-space ratio of the valve drive. With
communication object value 0 the output switches OFF (valve is closed with normally closed valve drive). With
communication object value 255 the output switches ON permanently (valve is fully open with normally open valve drive).
Telegram value
0 = OFF (valve drive closed)
x = intermediate values
255 = ON (valve drive opened)
11
Overload/short circuit
Output A
1 bit
DPT 1.005
C, R, T
If there is a fault on an output, e.g. due to a short circuit or an overload, the yellow LED of the corresponding output will flash
(5 Hz). At the same time, the communication object sends a telegram with the value 1. After the fault has been rectified with
the button
, the fault is reset on the output concerned and the communication object has the value 0. If the fault still
persists, the LED will flash again, and the communication object has the value 1.
As an alternative to button
, the fault can be reset via communication object Reset overload/short function by a telegram
with value 1.
Telegram value:
0 = no overload/short circuit on the output
1 = overload/short circuit on the output
12
Not assigned
13
Fault control value
Output A
1 bit
DPT 1.005
C, R, T
This communication object is enabled if in
, page 28, the parameter Monitoring control values
e.g. thermostat
is parameterized with the option yes.
This communication object indicates a possible fault in the room thermostat. The communication objects Control value,
switch
or Control value, continuous (PWM) can be cyclically monitored. Should the control value not be received by the
transmitting thermostat within a parameterizable time, a telegram with the value 1 is sent.
The communication object value is
sent – depending on the parameterization – after a change and/or on request via the
communication object Request status
values
.
Telegram value
0 = no fault
1 = fault