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12 Commissioning
11.5 AS-Interface, ordering option Fieldbus, code A2,
A3, A4
Observe the safety information and general information in the
"Electrical connection" section.
11.5.1 Pin assignment
3
1
4
Pin
1
AS-Interface +
2
-
3
AS-Interface -
4
n.c.
5
-
Carry out potential equalisation via pre-assembled earthing
kit.
Connect yellow/green stranded wire H07 V-K 4.0 on site.
11.5.2 Potential equalisation and electrical connection
The potential equalisation can be established using the fol-
lowing methods:
•
Pre-assembled earthing kit for the on-site wiring of the earth
via a stranded wire, yellow/green H07 V-K 4.0
•
Conductive connection via the mechanically coupled valve
fitting to the system earth
The maximum permissible resistance of the potential equal-
isation connection is defined as R ≤ 100 Ω. During the plant-
specific maintenance cycle, the potential equalisation connec-
tion must be checked to ensure that it has been connected
correctly and that the maximum resistance has not been ex-
ceeded.
Procedure
1. Establish the potential equalisation using one of the spe-
cified methods.
2. Check the maximum permissible resistance value and
check the connections if this is exceeded.
3. Include the check of the potential equalisation in the main-
tenance cycle.
4. Connect the product in accordance with the pin assign-
ment.
GEMÜ 1242
Signal name
11.6 DeviceNet, ordering option Fieldbus, code DN
Observe the safety information and general information in the
"Electrical connection" section.
11.6.1 Pin assignment
2
3
5
1
4
Pin
1
Shield
2
V+
3
V-
4
CAN_H
5
CAN_L
12 Commissioning
Hazardous situation
▶ Risk of injury or damage possible.
●
●
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).
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.
20 / 41
Signal name
CAUTION
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
opened and closed. It must therefore
be ensured in advance that this does
not lead to a dangerous situation.
NOTICE
NOTICE
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