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12 Commissioning
12 Commissioning
- Prior to commissioning, familiarize yourself with the opera-
tion of the product.
Leakage
▶ Emission of dangerous materials.
Provide precautionary measures against exceeding the
●
maximum permitted pressures caused by pressure
surges (water hammer).
Cleaning agent
▶ Damage to the GEMÜ product.
The plant operator is responsible for selecting the clean-
●
ing material and performing the procedure.
Hazardous situation
▶ Risk of injury or damage possible.
For correct commissioning, the
●
product must be calibrated to the pro-
cess valve by means of the initializa-
tion process.
During this commissioning, the valve is
●
automatically opened and closed sev-
eral times. It must therefore be en-
sured in advance that this does not
lead to a dangerous situation.
Incorrect initialization
Always carry out initialization without operating medium
●
pressure on the process valve. Carry out initialization of
the process valve in neutral position (NO/NC).
Note
▶ Due to environmental influences on the system side (set-
ting behaviour of elastomers, thermal influences) and
configuration-specific infeed behaviour, which could im-
pact the control characteristics, it is recommended that
the self-calibration is carried out again by an initialization
after commissioning in order to prevent incorrect error
messages. If error messages occur which are attributable
to the fact that the controller can no longer correctly ap-
proach or determine the end positions (for example, des-
pite the positioning signal specification of 0%, the valve
position is >1.0%
1)
, it is recommended to also carry out
the initialization again.
1)
Dependent on the dead zone setting and close tight
▶
function. If the close tight function is deactivated (≜set-
ting value = 0.0%), the valve is closed only within the set
value of the dead zone
GEMÜ 1441 cPos-X
CAUTION
CAUTION
CAUTION
NOTICE
NOTICE
For delivery of the product assembled on a valve at the
●
factory, the complete construction is already ready for op-
eration at a control pressure of 5.5 to 6 bar without oper-
ating pressure. A reinitialization is recommended if the
plant is operated with a different control pressure or if the
mechanical end positions have been changed (e.g. seal
replacement on the valve or actuator replacement). The
initialization is retained even in the event of voltage
cutoff.
For delivery of the product without factory setting (e.g. for
●
delivery without valve) initialization must be carried out
once for correct operation. This initialization must be re-
peated every time that the process valve is changed (e.g.
seal replacement or actuator replacement).
1. Use suitable connectors.
2. Connect the control medium lines tension-free and
without any bends or knots.
3. Connect the pneumatic tubes and activate the pneumatic
auxiliary power of max. 7 bar.
4. Connect the connection cable tension-free and without
any bends or knots.
5. Switch on the energy supply via set value signal 4–20 mA
DC.
ð Wait until the status display switches from "Starting..."
to a constant operating information display (this takes
approx. 20 seconds).
6. Start the automatic initialization (speed-AP
function)
1)
:
ð Hold a magnet at the marked initialization position
(INIT) until "Remove Magnet" is shown on the status
display
(2)
.
ð The initialization phase lasts for a few minutes, during
which the process valve is opened and closed several
times. The initialization process is ended automatic-
ally.
(1)
Alternatively, the initialization that is required for the com-
missioning can be started and carried out via the app. All of
the results for each individual step are therefore also dis-
played in detail. In addition to the described options for activ-
ating the initialization, the digital input can also be used to
start the process via an external signal (parameter setting:
"Digital input function" – Start Init).
2)
While the wireless connection is active (this can be seen on
the connection status indicator in the status display), the
magnetic trigger is deactivated. The magnetic trigger can also
be permanently deactivated via the app.
22 / 33
NOTICE
NOTICE
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