DFPI-...-ND2P-C1V-...-A
Linear drive
Festo SE & Co. KG
Ruiter Straße 82
73734 Esslingen
Deutschland
+49 711 347-0
www.festo.com
Addendum document | Operating conditions EX
8168968
2021-11b
[8168970]
Translation of the original instructions
© 2022 all rights reserved to Festo SE & Co. KG
1
Identification EX
Identification
II 3G
II 3D
Ex ec IIC T4 Gc X
Ex tc IIIC T120°C Dc X
Tab. 1: Identification
2
Applicable documents
NOTICE
Technical data for the product can have different values in other documents. For
operation in an explosive atmosphere, the technical data in this document always
have priority.
All available documents for the product
3
Certified products
Type
Part number Type
Part number
DFPI-100-...-ND2P-C1V-A
1548004
DFPI-100-...-ND2P-C1V-P-A
1548005
DFPI-125-...-ND2P-C1V-A
1548020
DFPI-125-...-ND2P-C1V-P-A
1548021
DFPI-160-...-ND2P-C1V-A
1548026
DFPI-160-...-ND2P-C1V-P-A
1548028
DFPI-200-...-ND2P-C1V-A
1548030
DFPI-200-...-ND2P-C1V-P-A
1548032
DFPI-250-...-ND2P-C1V-A
1548037
DFPI-250-...-ND2P-C1V-P-A
1548039
DFPI-320-...-ND2P-C1V-A
1548041
DFPI-320-...-ND2P-C1V-P-A
1548044
Tab. 2: Certified products
4
Safety
4.1
Safety instructions
–
The device can be used under the stated operating conditions in zone 2, explo-
sive gas atmospheres, and in zone 22, explosive dust atmospheres.
–
Operate the device with compressed air that as a minimum conforms to the
quality class in accordance with ISO 8573-1:2010: [7:4:4]. Information on the
operating medium: oiled operation not permitted.
–
The device is not intended for use with other fluids.
–
Extraction of the operating medium outside the potentially explosive area.
–
The device may only be used in the delivered configuration in a potentially
explosive atmosphere.
–
Use the device in its original status, without any unauthorised modifications.
–
Installation, commissioning, maintenance and disassembly should only be con-
ducted by qualified personnel.
–
All work must be carried out outside of potentially explosive areas.
–
Avoid lateral forces and torques on the piston rod.
4.2
Intended use
The linear drive is intended for the transported of masses and the transmission of
forces.
4.3
Identification X: special conditions
–
Danger of electrostatic discharge.
–
The device must be operated only in an environment with a minimum of con-
tamination level 2, as defined in IEC 60664-1.
–
Ambient temperature -5 °C
£
T
a
£
+50 °C.
5
Function
Pressurising the cylinder chambers causes the piston in the pipe to move back
and forth. The piston rod transfers the movement outwards.
The integrated positioner performs position control of the piston rod within the
available stroke range.
The integrated displacement encoder transmits the current piston position to the
higher-order system as an analogue voltage signal.
6
Commissioning
WARNING
The discharge of electrostatically charged parts can lead to ignitable sparks.
• Prevent electrostatic charging by taking appropriate installation and cleaning
measures.
• Include the device in the system equipotential bonding.
• The piston rod is electrically insulated from the actuator. Include the piston rod
separately in the system equipotential bonding.
WARNING
Combustible sparks can occur with coated metal parts.
• Prevent processes that are strongly charge-generating.
WARNING
Unsuitable accessories affect the type of protection.
• Only use cable connectors approved for Ex-e type of protection with a corre-
sponding IP degree of protection or the NHSB connecting cable.
NOTICE
Escaping exhaust air can swirl up dust and create an explosive dust atmosphere.
–
Connect the device outside the potentially explosive area with the connecting
cable or in a type of protection suitable for zones 2 and 22.
7
Maintenance and care
–
Check the operational reliability of the device regularly. Interval: 2 million
movement cycles or after 6 months at the latest.
–
When using the device in a dusty environment: check the guide rods and
bearings at shorter intervals to ensure that they are functional according to the
ambient conditions.
–
Wear and spare parts can be replaced in individual cases. Work of this type
must be carried out by trained and authorised specialists only.
Malfunction
Remedy
External damage after visual inspection
Replace device.
Audible leakage at the rod seal
Replace device.
Cylinder not securely mounted, mounting on
piston rod not secure
Tighten the retaining screws.
Dry lubricant residue stuck firmly to the
piston rod
Clean the piston rod with a soft cloth.
Longitudinal ridges on the piston rod
Replace device.
Non-uniform running behaviour
Replace device.
Deterioration of the guide qualities due to
increased bearing play
Replace device.
Increased noise generation
Replace device.
Tab. 3: Fault clearance
8
Technical data
DFPI-...-ND2P-C1V-...-A
Operating pressure
[MPa]
0.3 … 0.8
Ambient temperature
[°C]
-
5 …
+
50
Temperature of medium
[°C]
-
5 …
+
50
Relative humidity
[%]
5 … 100
Operating medium
Compressed air according to ISO 8573-1:2010:[7:4:4].
Lubricated operation not permissible.
Operating voltage range
[V DC]
22.8 … 26.4
Nominal operating voltage
[V DC]
24
Signal connections
Initialisation
[V DC]
[mA]
22.8 … 26.4
2.5
Setpoint input
[mA]
4 … 20
Actual value output
[mA]
4 … 20
Degree of protection
IP65, IP67, IP68, IP69K NEMA 4
Materials
Piston rod
High-alloy stainless steel
End cap
Anodised wrought aluminium alloy or
Anodised and painted wrought aluminium alloy or
Painted cast aluminium
Bottom cover (bearing cap)
Cylinder barrel
DFPI-100/-125/-160/-200
Anodised wrought aluminium alloy
DFPI-250/-320
High-alloy stainless steel
Screws
