Service Mode - Gira KNX 2139 00 Product Documentation

Valve outputs | Channel-independent functions
9.3.4.2 Objects for summer / winter switchover
Function toggling of the Summer / Winter operating mode
Object no.
12
1-bit input object to switch over between summer and winter mode. The telegram
polarity can be configured. The status is stored internally in the device if there is a
bus or mains voltage failure and is restored after a device reset.
Cyclical telegrams to this object with an identical telegram polarity (ON -> ON, OFF -
> OFF) produce no reaction.

9.3.5 Service mode

Service mode allows the bus-controlled locking of all or some valve outputs for main-
tenance or installation purposes. If service mode is active, actuators can be moved to
a defined position (completely open or closed) and locked against activation by com-
mand value telegrams. Both service mode and the locking state are preset by a 2-bit
forced operation telegram, according to KNX DPT 2.001.
The first bit (bit 0) of the object "Service mode - Activate / deactivate input" directly
specifies the locking state. The second bit (bit 1) of the object activates or deactiv-
ates service mode. The locking state in the telegram is only evaluated by the actu-
ator, when bit 1 plans for active service mode. Otherwise, bit 0 is ignored.
The valves activated by service mode open or close completely and statically.
No pulse width modulation is executed. The configured valve direction of ac-
tion is taken into account in the electrical activation of the outputs.
Bit 1 Bit 0
0 x
0 x
1 0
1 1
Bit coding of service mode
Service mode influences the status signals of the affected valve outputs. Depending
on the configured command value data format, the following command values are as-
sumed when service mode is active...
– Switching (1-bit):
Valve closed = OFF
Valve opened = ON
– Constant (1-byte) with pulse width modulation (PWM):
Valve closed = 0%
Valve opened = 100%
Heating actuator 6-gang with controller | Order no. 2139 00 | 21393100
Function
Summer / winter
mode
Function
Service mode not active -> normal control according to priority rule
Service mode not active -> normal control according to priority rule
Service mode active: Close valves
Service mode active: Open valves
Name
General valve out-
puts - Input
Type DPT Flag
1-bit 1,002 C, (R), W, -,
-
Page 57 of 257