GEM 1436 cPos User Manual

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14 Fail safe function
Fail safe function:
No. Error Outlet A1 Outlet A2
1 Power supply
failure
Single acting:
vented
Double acting:
vented
Single acting:
non existent
Double acting:
pressurized
2 Compressed
air supply fail-
ure
Single acting:
vented
Double acting:
not defined
Single acting:
non existent
Double acting:
Closed
This fail safe function is not a substitute for specific plant
safety requirements.
Adjustable safety reactions:
No. Error Outlet A1 Outlet A2
1 Set value < 4.0
mA
(range below I
Min W can be
adjusted from
0...22 mA)
Single acting:
adjustable
function
Double acting:
adjustable
function
(Open, Close*,
Hold, Safe)
Single acting: -
Double acting:
adjustable
function
(Open, Close*,
Hold, Safe)
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
15 Commissioning
- Prior to commissioning, familiarize yourself with the opera-
tion (see “Operation“, page39) of the product.
WARNING
Corrosive chemicals!
▶ Risk of caustic burns
● Wear appropriate protective gear.
● Completely drain the plant.
CAUTION
Leakage!
▶ Emission of dangerous materials
● Provide precautionary measures against exceeding the
maximum permitted pressures caused by pressure
surges (water hammer).
CAUTION
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)
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.
NOTICE
▶ In the case of the Process controller option, this must be
activated separately.
15 Commissioning

GEM 1436 cPos Specifications

General

Brand	GEM
Model	1436 cPos
Category	Controller
Language	English