Gira KNX 213900 Operating Instructions Manual page 6

Heating actuator 6-gang with controller
– Integrated room temperature control with setpoint value specification
– 12 independent controllers to control up to 12 independent rooms
– Controller function for heating and cooling operation
Overload / short-circuit protection
In order to protect the device and connected valve drives, in case of overload or
short-circuit the device determines which output is involved and switches it off. Non-
overloaded outputs continue to work, which means that the rooms in question are still
heated.
– In the event of an overload, group monitoring switches off the affected output
group A1...A3 or A4...A6 first.
– Unambiguous monitoring determines the overloaded output in up to
4 test cycles.
– If in the event of only a minor overload it is not possible to unambiguously
identify any output as overloaded, then the actuator switches individual out-
puts off one after the other.
– The overload can be reported to the bus for each output.
LED display:
All status LEDs of the affected valve group flash synchronously during the test (1s
flash -> 1s pause -> 1s flash -> ...).
– Overload: Status LED of the identified output flashes continuously (approx. 2
Hz): Test cycle completed.
– Short-circuit: Status LED of the identified output flashes continuously (approx.
1 Hz): Test cycle completed.
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