Siemens TX-I/O TXM1.8D Functions And Operation page 49

Parameter
Direction
Detect end positions
Note
Reaction to changes of
AOBValue
Display
Response in case of error
Siemens
Building Technologies
Description
Exchange of outputs (only n and n+1) to correct faulty
wiring.
I/O point Direction = False
(normal)
n DOWN2
n+1 UP
n+2 DOWN1
• If EndPosDetection = inactive, the runtimes RunTimeUpDown and
RunTimeDownUp must be parameterized.
• If EndPosDetection = active, the motor current at the relay feeds is measured. This
allows for detecting the end positions and determine the motor runtimes between
positions Up and Down2. The runtime measurement RunTimeUpDown and
RunTimeDownUp is executed each time when the blinds drives the entire stretch
from Up to Down2 or vice-versa.
Values RunTimeUpDown and RunTimeDownUp are saved to the module's flash
memory. They change over time (temperature deviations, aging).
Changes to the motor runtime are sent to the bus master for subsequent evaluation
in the application function.
Changes > 7% or > 3 s are saved to flash memory.
Changes > 15% are not saved as unbelievable.
• If EndPosDetection = once, the motor current measurement is active, the stroke
model is synchronized in the end positions, but the run times are only saved to the
flash memory once after start-up.
• Command CAL can be used to force runtime measurement.
If EndPosDetection = Inactive, the module ignores the command.
• Because of the current measurement, interposing relays for the control of several
blinds in parallel are not admitted.
If process value (AOBValue) changes, the new value overwrites the old value.
The function drives to the new position in case of absolute commands.
• The I/O status LEDs are lit when the associated relay is active
• In case of an error, the I/O status LED and the module status LED are lit.
Details, blinking pattern and errors in particular: See section "Display, operation and
diagnosis" in [6] "TX-I/O™ engineering and installation".
• The relays drop off in case of a DC 24 V bus supply failure.
When power is restored, the relays remain inactive until a valid process value is
available.
• In case of bus failure:
The behavior can be parameterized for each I/O function:: BackupMode,
BackupValue and BackupDelay; see above parameters.
TX-I/O™ Module system – Functions and operation
Digital output functions
Range
Increment = 0.01 s
BOOL
True / false
Direction = True
(inverted)
UP
DOWN2
DOWN1
(default)
(False)
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CM110561en_08
2018-10-25