Festo SDE1 Manual De Instrucciones página 2

Pressure sensor, pressure switch
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This product is recognized by UL. Representative samples
of this component have been evaluated by UL and meet
applicable UL requirements.
UL approval information
Product category code NRNT2 (USA),
NRNT8 (Canada)
File number E253738
Considered standards UL 508, 17th edition,
C22.2 No. 14-95
UL mark
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Fitting and commissioning to be carried out by qualified
personnel only in accordance with the operating in-
structions.
Such qualified personnel must have several years of
training and experience in installing and commissioning
electrical and pneumatic industrial control systems.
• Please observe the applicable safety requirements
and standards.
Extracts )* from the UL report:
Only for connection to a NEC Class 2 supply
Raccorder Uniquement a un circuit de Classe 2
This device is intended to be used with a Class 2 power
source or Class 2 transformer in accordance with UL1310
or UL1585.
As an alternative a LV/C (Limited Voltage/Current) power
source with one of the following properties can be used:
– This device shall be used with a suitable isolating
source such that the maximum open circuit voltage
potential available to the product is not more than
30 V DC and the current is limited to a value not excee-
ding 8 amperes measured after 1 minute of operation.
– This device shall be used with a suitable isolating
source in conjunction with a fuse in accordance with
UL248. The fuse shall be rated max. 3.3 A and be instal-
led in the 30 V DC power supply to the device in order to
limit the available current.
Note that, when more than one power supply or isolating
device is used, connection in parallel is not permitted.
Conditions of acceptability:
In determining the acceptability of the combination, the
following details should be examined:
– The mounting suitability shall be determined in the end-
use application.
– This device should be mounted in an enclosure having
adequate strength and thickness.
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Only SDE1-..-FQ4-...: The front face of the device may
be used as part of an enclosure.
– Only SDE1-..-FQ4-...:
The front face of the device has not been subjected to
enclosure tests according to UL Standards UL50 and
UL746C. Suitability should be determined in the end-
use application.
– The device has not been investigated for field-wiring.
The suitability should be determined in the end-use
application.
– If the device is provided with output wires which are not
UL listed or recognized these wires have to be segrega-
ted from field and factory installed conductors and
uninsulated live parts of other circuits operating at over
150 V to ground so that a minimum permanent 2 inch
Note
(50.8 mm) separation is maintained, unless the field
and factory wiring conductors have been provided with
recognized insulating material which has an equal or
higher voltage rating than the other circuit involved.
)* taken over essentially without important changes
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