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Siemens
TX-I/O™ Module system – Functions and operation
CM110561en_08
Building Technologies
Digital output functions
2018-10-25
•
If the difference between the stroke model and the process value (
∆
Y) is more than
half the deadband plus the hysteresis, this generates an OPEN or CLOSE pulse
which is long enough to return the actuator to a position within the deadband.
•
The minimum pulse length is equal to the runtime multiplied by the hysteresis.
Y
_
+
0
Hys
Hys
Nz
t
10761D99
Start synchronization, if selected, is automatically initiated after reset.
The synchronization is not interrupted by any other event.
•
NONE
No synchronization
•
SINGLEOPEN
OPEN command during 1.5 x runtime OPEN
•
SINGLECLOSE
CLOSE- command during 1.5 x runtime CLOSE
Synchronization when stroke model reaches the end position (0% or 100%):
•
Normal operation:
– NONE (
default
)
No synchronization
– CONTINUOUS
Permanent synchronization (0% and 100%)
– CONTINOPEN
Permanent synchronization (100%)
– CONTINCLOSE
Permanent synchronization (0%)
– SINGLE
1.5 * Rise Time (100%) or 1.5 * Fall Time (0%)
– SINGLEOPEN
1.5 * Rise Time (100%)
– SINGLECLOSE
1.5 * Fall Time (0%)
– EVERY10MIN
1.5 * Rise Time (100%) or 1.5 * Fall Time (0%)
every 10 minutes
– EVERY10MINOPEN
1.5 * Rise Time (100%) every 10 minutes
– EVERY10MINCLOSE
1.5 * Fall Time (0%) every 10 minutes
– EVERY20MIN
1.5 * Rise Time (100%) or 1.5 * Fall Time (0%)
every 20 minutes
– EVERY20MINOPEN
1.5 * Rise Time (100%) every 20 minutes
– EVERY20MINCLOSE
1.5 * Fall Time (0%) every 20 minutes
•
Local override
:
OPEN or CLOSE relay is active as long as button is pressed,
synchronization is
disabled
.
•
Tool override, Remote Overrid
e: in the end positions,
CONTINOPEN /
CONTINCLOSE
applies, i.e. OPEN or CLOSE relay goes to
maintained contact.
If this behavior is not desired, command the actuator to 0.1% / 99.9% instead of 0% /
100%.
For commissioning purposes, a synchronization can be forced:
•
NONE
No synchronization
•
CONTINOPEN
Continuous OPEN command
•
SINGLEOPEN
OPEN command during 1.5 x runtime OPEN
(series D and higher)
•
CONTINCLOSE
Continuous CLOSE command
•
SINGLECLOSE
CLOSE- command during 1.5 x runtime CLOSE
(series D and higher)
Deadband / Hysteresis
(Nz, Hys)
Start synchronization
(series D and higher)
Synchronization in
end position
Forced synchronization
Parameterization