7.3.5 Parameter and function description
The actuator can be operated in override control for commissioning /
maintenance purposes or system-wide functions (e.g. night-cooling).
∂ Manual override: When the gear disengagement is used to freely adjust
the damper position, a mechanical jam will be detected if a mismatch
between setpoint and actual position persists for more than 10s.
∂ Remote override: The actuator enters this state when an override
command is sent over the bus.
∂ Available commands:
o Open / Close (depends on opening direction)
o Min / Max (depends on Min/Max settings)
∂ For air dampers where the opening range is smaller than the nominal
opening range 0...90°, the feedback signal can be adapted to have the
actual opening range represented as 0...100%.
∂ Using adaptive positioning makes the actuator driving to its end positions
at the first startup after activating the adaptive positioning.
∂ To trigger the adaptation again after the first startup, either the command
"CalibrateAdaption" (Write "1" into register no. 256 ), or the adaptive
positioning can be turned off and on again.
∂ In case the communication to the controller is lost, the device can be
configured to go into a defined state.
∂ Default setting mode is "keep last setpoint", i.e. in case of communication
loss, the device controls to the last received setpoint.
∂ If the backup mode is enabled, it can be configured as follows:
o go to a predefined backup position
o keep current position
Restarting is possible by:
∂ Power-reset (turning operating voltage off and on) or
∂ by "ReInitDevice" command.
⇓ Device re-initializes and sets all process values to defaults.
The actuator supports the following re-initialization / reset behaviour:
∂ Local reset by push-button
∂ Remote reset: Using "RemoteFactoryReset" command.
Effect of reset:
Process values: set to ex-works default values.
o Application and actuator parameters are set to factory defaults,
o Network parameters are reset only in case of local reset, not by
∂ Not reset are: Counters, status flags, device info, and factory data.
When triggered, the self test drives the actuator to the detected limits and
sets the flags in register 769 according to the result (bit 09 = 1⇓"failed" or bit
10 = 1 ⇓ "passed").
The self test is not passed when the limits were not reached from the lower
end (results in jam). If the Min/Max limits can be exceeded, the self test is
not evaluated as failed.
Technische Grundlagen: Drehantriebe GEB...1
remote reset (otherwise loss of communication).