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14 Fail safe function
Fail safe function:
No.
Error
1
Power supply
failure
2
Compressed
air supply fail-
ure
This fail safe function is not a substitute for specific plant
safety requirements.
Adjustable safety reactions:
No.
Error
1
Set value < 4.0
mA
(range below I
Min W can be
adjusted from
0...22 mA)
2
Set value >
20.0 mA
(range below I
Max W can be
adjusted from
0...22 mA)
3
Actual value <
4.0 mA
(range below I
Min X can be
adjusted from
0...22 mA)
4
Actual value >
20.0 mA
(range below I
Max X can be
adjusted from
0...22 mA)
*Close = default setting. The valve is moved to the CLOSED
position
No. 3 and 4 only available for device version code PA01
www.gemu-group.com
Outlet A1
Outlet A2
Single acting:
Single acting:
vented
non existent
Double acting:
Double acting:
vented
pressurized
Single acting:
Single acting:
vented
non existent
Double acting:
Double acting:
not defined
Closed
Outlet A1
Outlet A2
Single acting:
Single acting: -
adjustable
function
Double acting:
Double acting:
adjustable
adjustable
function
function
(Open, Close*,
(Open, Close*,
Hold, Safe)
Hold, Safe)
15 Commissioning
- Prior to commissioning, familiarize yourself with the opera-
tion (see "Operation", page 39) of the product.
Corrosive chemicals!
▶ Risk of caustic burns
●
●
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.
1. Commission the product.
2. Use suitable connectors.
3. Connect the control medium lines tension-free and
without any bends or knots.
15.1 With default setting (positioner supplied mounted
to the valve)
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.
▶ In the case of the Process controller option, this must be
activated separately.
29 / 76
15 Commissioning
WARNING
Wear appropriate protective gear.
Completely drain the plant.
CAUTION
CAUTION
NOTICE
NOTICE
GEMÜ 1436 cPos
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