Festo PWEA-AC Series User manual

Translation of the original instructions
1 Further applicable documents
All available documents for the product èwww.festo.com/pk.
2 Safety
2.1 General safety instructions
– Only use the product in its original condition without unauthorised modifica
tions.
– Only use the product if it is in perfect technical condition.
– Observe product labelling.
– Take into consideration the ambient conditions at the location of use.
– Before working on the product, switch off the power supply and secure it
against being switched back on. Only switch on the power supply when the
product has been assembled and installation work is complete.
– Comply with the handling specifications for electrostatically sensitive devices.
– Observe tightening torques. Unless otherwise specified, the tolerance is
±20%.
2.2 Intended use
1Feed pipe
2Sensor
3Pilot valve
4Diaphragm
5Drain pipe
6Housing
Fig. 1 Function
The intended purpose of the PWEAAC/AP condensate drain is to discharge con
densate from compressed air systems. The condensate flows through the feed
pipes 1to the PWEAAC/AP and collects in the housing 6. A capacitive sensor
2continuously monitors the fill level and sends a signal to the electronic control
ler when the reservoir is full. The pilot valve 3is actuated and the diaphragm
4opens the drain pipe to discharge the condensate 5. If the PWEAAC/AP is
emptied, the drain pipe is closed before a loss in pressure can occur. The device is
not intended to be used with fluids and gases.
2.3 Training of qualified personnel
– Installation, commissioning, service and disassembly should only be conduc
ted by skilled personnel.
– The skilled personnel must be familiar with the installation of electrical and
pneumatic control systems.
2.4 Approvals
The product fulfils the requirements of EU directives and comes with the CE mark
ing .
The productrelevant EU directives and standards are listed in the declaration of
conformity èwww.festo.com/sp.
2.5 Further information
– Accessories èwww.festo.com/catalogue.
– Spare parts èwww.festo.com/spareparts.
– Documents and literature èwww.festo.com/sp.
3 Product overview
Fig. 2 Condensate drain PWEAAP3D
Fig. 3 Condensate drain PWEAAC
3.1 Product design
1Sensor board
2Front hood
3Screws
4Cable connector
5Terminal KL 4
6Terminal KL 2
7Cable connector
8Cable connector
9Cable
10 Cable
11 Screw
12 Power supply housing
13 Terminal KL 1
14 Terminal KL 5
15 Power supply board
Fig. 4 Product design
4 Installation
4.1 Pneumatic installation
Observe the pressure differences.
• Each condensate accumulation point must be drained separately.
8093862
PWEA-AC/-AP
Condensate drain
8093862
201806a
[8093864]
Instructions| Operating
Festo AG & Co. KG
Ruiter Straße 82
73734 Esslingen
Germany
[phone]0
www.festo.com

Fig. 5 Draining
1Drain pipe
2Collecting pipe
3Max. 5 m inclination for drain pipe
4Pneumatic tube, adjustment
5Connecting thread, SW 27
Fig. 6 Pneumatic installation
1. Adjusting the pneumatic tube 4.
2. Mount the condensate drain PWEAAC/AP to the connection thread of the
condensate feed 5. èThe minimum pressure required in the drain pipe
increases with every metre of inclination by 0.1 bar. Max. inclination of drain
pipe is 5 m 3.
3. Lay the collecting pipe with a minimum gradient of 1% 2.
4. The drain pipe 1must feed from the top into the collecting pipe.
4.2 Electrical installation
• Read and comply with the permissible mains voltage on the type plate!
• Carry out all installation work in accordance with VDE 0100.
• Observe the pin allocation.
• Do not install when powered.
Condensate drain PWEA-AC/-AP-3D
1. Loosen the screws 3and remove the front hood 2.
2. Remove the cable connector 4from the sensor board 1.
3. Loosen the screws aAon the power supply housing aB.
4. Remove the power supply board aE.
5. Remove the cable connectors 7and 8 and feed through cable 9and aJ.
6. Connect cable aJto terminals KL 1 and KL 4 and cable 9to terminals KL 2
and KL 5.
7. Install the power supply board aEin the power supply housing aB. Tighten
the cable and fasten with cable connectors 7and 8. Make sure the cable
connector 4leads upwards.
8. Plug the cable connector 4into the sensor board 1.
9. Replace the front hood 2 and tighten screws 3.
10. Tighten the screws aAon the power supply housing aB.
PWEA-AP-3D Plug connector ST1 (M12, 5-pin)1)
1 +24VDC +24
2 External test IN1
3 0V 0V
4 Alarm signal,
changeover contact
5 Alarm signal, N/C con
tact
1) e.g. with connecting cable type SIMM125GD...
Tab. 1 Description of plug connector ST1 (M12, 5polig)
There is no galvanic isolation between the contacts of the plug connector ST1.1–3
and the condensate area.
• Do not connect +24 VDC to ground.
Potential-free fault message contact
ST1.4–5 N.O.–COM Contact closed during normal operation.
Tab. 2
External test ST1.2–3 0V–IN1
Connect contacts Test active = drain
Contacts open Test inactive
Tab. 3
Device Cable Pin Contact Designation
2 Protective
earth conduct
or
PE
3 Neutral con
ductor
N
KL1
4 External con
ductor
L
1 N/O contact
2 Converter
KL2
3 N/C contact
1 0V 0V
PWEAAC6A
PWEAAC7A
KL5
2 External test IN1
Tab. 4
Device Cable Pin Contact Designation
1 N/O contact
2 Converter
KL2
3 N/C contact
1 +24 VDC +24
2 0V 0V
3 – 0T1
4 External test IN1
5 +24 VDC (0 V) ±24
PWEAAC3D
KL4
6 0 V (+24 VDC) ±24
Tab. 5
• When connecting several PWEAAC/AP units to a single 24 VDC source:
ensure the same polarity for the terminals KL4.5 and KL4.6.
There is no galvanic isolation between the terminals KL4.1…6 and the condens
ate area.
• At 24 VDC operation: do not connect + (plus) 24 VDC to ground as, inside the
device, the potential of the housing is negative.
Potential-free fault message contact
KL2.1–2 N.O.–COM Contact closed during normal operation
KL2.3–2 N.C.–COM Contact closed during malfunction or power fail
ure (standbycurrent principle)
Tab. 6
External test KL5.1–2 or KL4.2-4 0V–IN1:
Connect contacts Test active = drain
Contacts open Test inactive
Tab. 7
5 Commissioning
The condensate drain PWEAAC/AP can only be operated when powered
è 8.2 Technical data, electrical.3 LEDs indicate the different operating statuses:

Operating status LEDs Function
Ready for operation Voltage is present
Drain sequence Feed pipe is open
Malfunction/alarm
If there is a malfunction in the condensate drain,
the valve opens in cycles (approx. every 3 s) so
that the malfunction can be automatically
remedied.
Test of valve function (manual draining):
Actuate the pushbutton for approx. 2 s. Test of
alarm function è Alarm mode function: Actuate
the pushbutton for at least 1 minute.
Tab. 8 Operating status LEDs
Do not use the test pushbutton for continuous draining.
Alarm mode function
The PWEAAC/AP condensate drain also has an alarm mode function for malfunc
tions when draining the condensate. If the sensor is not free after 1 minute, a fault
message is triggered.
– An alarm LED flashes.
– An alarm relay switches. The signal can be transmitted potentialfree.
– The valve opens every 4 minutes for 7.5 s.
Fig. 7
If the malfunction is remedied, the PWEAAC/AP condensate drain automatically
switches back to normal mode.
Potential-free fault message contact
The alarm signal can be forwarded via the potentialfree contact (e.g. to a control
station). The switching contact can, for example, be operated in failsafe mode.
– The PWEAAC/AP condensate drain works faultfree when powered èThe
alarm relay is activated.
– If there is no operating voltage or if there is a fault message, the alarm relay
switches off èThe working contact is open (alarm).
External test
Any existing condensate can be drained via remote control. The normal test push
button function also leads out of the PWEAAC/AD condensate drain here. If the
external contact is closed, the valve opens. The connection can be connected to a
switch, a relay contact or an open collector output.
6 Service
6.1 Cleaning and maintenance
• Clean the PWEAAC/AP condensate drain, if required, with a soft cloth. Clean
ing agents include all nonabrasive media.
7 Malfunctions
Malfunction Possible cause Remedy
Check compressor.Blocked drain pipe
Clean supply line.
Minimum pressure not reached
Error in the installation. Perform installation in accord
ance with the instruction manu
al.
OverloadCondensate is too high
Extremely large quantities of
dirt particles
Observe maximum permissible
operating pressure
è 8.1 Technical data,
pneumatic.
Tab. 9
8 Technical data
8.1 Technical data, pneumatic
Operating conditions
Permissible temperature
range
[°C] +1…+60
Operating medium Compressed air
Operating pressure [bar] 0.8…16
Mounting position Standing upright ±5°
Condensate feed G½ inside
Condensate drain (tubing) G¼ @ 8…9 mm angle nozzle
e.g. type PUNH12x2NT
Weight (empty) [kg] 0.7
Materials
Housing Polymer
Condensate reservoir Al
Seals NBR, FPM, PU
Tab. 10
8.2 Technical data, electrical
Electrical data PWEA-
AC/-AP
6A 7A 3D
Maximum power consump
tion
P < 2.0 VA P < 2.0 W
Mains voltage UAC =
115 V ±10 %
50…60Hz
UAC =
230 V ±10 %
50…60Hz
U0 =
24 VDC
+10…25 %1)
Recommended cable sheath [@] 5.8…8.5 mm
Cable cross section [mm2] 3x0.75, 5x0.25
Fuse protection 0.5 A2) 100 mA1)2)
Contact load / potentialfree
fault message
0 V…250 V
0 mA…1000 mA
5 V…30 V
10 mA…1000
mA
External test IN1 and 0V
Test active:
Test inactive:
IN1: 0…1 V contact closed
IN1: 5…36 V contact open
1) Minimum voltage source internal resistance Ri 12 Ohm
2) medium timelag
Tab. 11