„Aktor M ST L Modbus“ Operation
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101274584-V01.11.2019
6.3 Initialisation run
6.3.1 By address change
The actuator will perform an initialisation run if the
Modbus address is changed (see section
).
6.3.2 Via the Modbus parametrization
Register
address
Name R/W Values
138
Com-
mand
r/w
0: Normal operation
1: Valve adaptation/initiali
-
sation run
2: Test run: manual flush
-
ing function (once), after
that the valve will again
be controlled according to
the set operating mode
3: Sync: manual flushing
function (once), after that
the valve will again be
controlled according to
the set operating mode
4: Error reset: Each incom
-
ing error will generate an
error message in register
318. The error message
can be reset with the help
of the
Error Reset. In case of
permanent errors, the
error message will be gen
-
erated again immediately.
5: Baud rate change. The
currently set parameters
of the register addresses
105...107 are applied.
6.4 Manual operation
The manual mode is only intended for mounting and
test purposes.
In manual mode, the stem can be extended and
retracted manually with the help of a magnet.
CAUTION
Risk of scalding due to hot fluids
In manual mode the actuator might not close
fully.
There is a risk of scalding due to the uninten-
tional discharge of hot water.
f
Only carry out work when the system is
depressurised.
f
Allow the system to cool down.
f
Wear safety goggles.
1
Illust. 6: Manual operation
(1)
Magnet
6.4.1 Extending the drive stem
1.
Move the actuator into the mounting position (DIP
switches (Bit 1 to 6) set to “OFF”).
Z
The drive stem will be retracted.
Z
The LED will flash green quickly.
2.
Stroke along the right side of the actuator with the
magnets (position (1) in Illust. 6 on page 13).
Z
The drive stem will be extended.
Z
The LED will flash yellow.
