Festo Линейный привод с датчиком перемещения DFPI - Manual (Page 5)

After the compressed air supply is switched on, the drive travels as follows:
– The drive moves to the safety position if the operating voltage supply or the
analogue setpoint are outside the permissible range.
– The drive moves to the specified analogue setpoint position if the operating
voltage supply is in the permissible range, depending on the end positions
taught during initialization.
Switching the DFPI off
• Switch the power supplies off in the following sequence to ensure safe venting
of the integrated valve manifold:
1. First switch off the operating voltage supply.
2. Only after that switch off the compressed air supply.
Only when the drive is vented can the piston rod be shifted manually, for example
to push the piston rod in for safe transport.
10 Maintenance and care
If used as intended in the operating instructions, the device will be free of mainten-
ance.
11 Disassembly and repair
Warning
Danger of crushing! Uncontrolled advance of piston rod.
When the power supplies are switched off, if the compressed air supply is
switched off first and only after that the operating voltage supply, in case of error
(e.g. defective valve manifold) there may be continuous excess pressure in a
cylinder chamber. During dismantling the linear drive can then advance unexpec-
tedly, thus crushing people's body parts.
• Switch the energy supplies off in the following sequence to allow the integ-
rated valve manifold to vent the drive:
1. First switch off the operating voltage supply.
2. Only after that, switch off the compressed air supply.
Warning
Danger from parts flying through the air!
If there is still excess pressure in a cylinder chamber despite the compressed air
supply being switched off, when a cylinder end cap is loosened it can tear off, fly
through the air and injure people.
• Do
not dismantle cylinder end cap! The product may be overhauled only by our
repair service.
Disassembly
1. First switch the operating voltage supply off and then the compressed air supply
to allow the integrated valve manifold to vent the drive.
2. Remove the slide gate from the piston rod.
3. Remove the screws on the flange of the process valve or penstock valve.
4. Remove the drive (if necessary including mounting adapter and coupling exten-
sion).
Repair
• Make sure that the product is overhauled only by our repair service. This way
the fine tuning and tests that are required will be taken into particular con-
sideration.
12 Troubleshooting
Malfunction Possible cause Remedy
The DFPI closes the
process valve, even
though a different
setpoint is specified. Operating voltage supply or the analogue
setpoint is outside of the permitted range
(e.g. in the event of a wire break); the DFPI
moves to the safety position. Check operating voltage
supply and analogue set-
point
Even though the energy
supply is switched off,
the piston rod cannot
be shifted manually. The drive has not been vented because
the compressed air supply was switched
off first, and then the operating voltage
supply. First switch off the oper-
ating voltage supply, and
then the compressed air
supply.
Fig. 16
13 Technical data
DFPI-...-...-ND2P-C1V-...-A -100-
... -125-
... -160-
... -200-
... -250-
... -320-
...
Based on standard DIN 3358
Type of mounting On flange in accordance with DIN 3358
Flange hole pattern F07 F10 F10, F14
Width across flats, spanner flat
on the piston rod 22 27 36
Design Piston rod, cylinder barrel
Cushioning No cushioning
Mounting position Any
Mode of operation Double-acting
Position sensing With integrated displacement encoder
Measuring principle of
displacement encoder Potentiometer
DFPI-...-...-ND2P-C1V-...-A -100-
... -125-
... -160-
... -200-
... -250-
... -320-
...
Positioning accuracy
(Max. error of measurement) [% FS] š 500 mm stroke: 1.1
> 500 mm stroke: 2.2
Repetition accuracy [% FS] ±1.6
Hysteresis [% FS] ±1.5
Size of the dead zone [% FS] 1.25
Accuracy of analogue output [% FS] 2
Analogue output response
time [ms] Max. 500
Max. load of the analogue
output [Ω] Max. 600
Max. load of the analogue
input [Ω] Max. 500
Electrical connection 5-pin; straight plug; screw terminal
Pneumatic connection
– DFPI-...-...-ND2P-C1V G¼
– DFPI-...-...-ND2P-C1V-P... For tube outside- ∅ 8 mm
For tube outside- ∅ 10 mm
Operating pressure [bar] 3 … 8
Nominal operating pressure [bar] 6
Operating medium Compressed air in accordance with
ISO 8573-1:2010 [7:4:4]
Note on the operating
medium Operation with lubricated medium possible (in which
case lubricated operation will always be required)
Relative air humidity [%] 0 ... 100 condensing
Operating voltage range [V DC] 22.8 … 26.4
Nominal operating voltage [V DC] 24
Max. current consumption [mA] 220 – at nominal operating voltage
Idle current [mA] 34.9 – at nominal operating voltage
Max. cable length [m] 30
Reverse polarity protection For operating voltage, setpoint value,
initialisation connection
Setpoint input [mA] 4 ... 20
Analogue output [mA] 4 ... 20
Initialisation input [V DC] 22.8 ... 26.4; I typ. 2.5 mA at 24 V DC
Seal closing function
(leak-proof function) [mA] 4.0 mA ≤ I ≤ 4.2 mA
20 mA ≤ I ≤ 19.80 mA
Degree of protection -
in mounted status IP65, IP67, IP68, IP69K, NEMA 4
Stroke [mm] 40 … 990
Stroke reserve [mm] 3 4
Ambient temperature [°C] –5 … +50
Use in exterior C1 – weather-protected areas in accordance with
IEC 60654
Product weight
Basic weight with 0 mm stroke
– DFPI-...-...-ND2P-C1V [g] 4 671 7 693 9 099 18 358 29 956 45 200
– DFPI-...-...-ND2P-C1V-P [g] 5 237 8 259 9 665 18 924 30 552 45 766
– Additional weight per
10 mm stroke
[g] 80 145 159 187 325 399
– Additional weight
of displacement encoder
per 10 mm
[g] 2
– Moving mass with
0 mm stroke
[g] 1228 1944 2250 4722 7059 11417
– Additional weight
of moving load
per 10 mm stroke
[g] 27 52 87
Materials
– Cylinder barrel Anodised wrought aluminium alloy High-alloy
stainless steel
– Cap (end cap) Anodised wrought aluminium alloy or
Anodised and painted wrought aluminium alloy or
Cast aluminium painted
– Bottom cap (bearing cap)
– Piston rod High-alloy stainless steel
– Screws Steel
1)
– Seals NBR,
PU NBR
Note on materials RoHS-compliant, contains paint-wetting impairment
substances
Vibration resistance in accordance
with DIN/IEC 68, Part 2-6 0.35 mm path at 10 ... 60 Hz;
5 g acceleration at 60 ... 150 Hz
Continuous shock resistance
in accordance with
DIN/IEC 68, Part 2-82 ±15 g at 6 ms duration,
1000 shocks per direction
CE certification (see declaration of
conformity
www.festo.com)
In accordance with EU EMC Directive
2)
In accordance with EU Explosion Protection Directive
(ATEX)
3)
1) Steel and high-alloy stainless steel
2) The device is intended for use in an industrial environment. Outside of industrial environments, e.g. in
commercial and mixed-residential areas, actions to suppress interference may have to be taken.
3) Certification-specific special documentation must be considered ( www.festo.com/sp).
Fig. 17