VOFA-L26-T32C-M-G14-1C1-...
Festo – VOFA-L26-T32C-M-G14-1C1-... – 1409NH English
59
Switching times
_
20 %
Operating pressure
3 bar
6 bar
10 bar
Valve switching times on
40 ms
24 ms
17 ms
Valve switching times off
35 ms
54 ms
71 ms
Signal drop PNP
1)
(time period from energising the solenoid coil until the
proximity sensor switches off )
21 ms
11 ms
9 ms
Signal rise PNP
1)
(time period from voltage activation of the solenoid coil
until the proximity sensor switches on)
37 ms
58 ms
74 ms
1)
When using NPN proximity sensors, signal drop and rise are interchanged.
Tab. 10
Response times as a function of the operating pressure
Fig. 12
Circuit symbols of the control block
Electrical system
Operating voltage supply of solenoid valves
–
nominal voltage
–
permissible voltage fluctuations
–
duty cycle
24 V DC
-15 ... +10 %
100 %
Drop-off current
1)
š
1 mA
Output per solenoid coil
1.8 W (at 24 V DC)
Minimum switching frequency of the solenoid valves Switch at least once per week
Duration of the test pulses for the control system
–
max. positive test pulse with 0 signal
–
max. negative test pulse with 1 signal
1000 µs
800 µs
Electrical connection
EN 175301-803, type C, without protective
earth conductor
1)
The pilot control switches off safely below this current value.
Tab. 11
Electrical system
