VOFA-L26-T32C-M-G14-1C1-...
Festo – VOFA-L26-T32C-M-G14-1C1-... – 1409NH English
45
6.3
Electric
Warning
•
For the electrical power supply, use only PELV circuits in accordance with
IEC 60204-1 (Protective Extra-Low Voltage, PELV).
•
Observe the general requirements of IEC 60204-1 for PELV circuits.
•
Use only voltage sources which guarantee reliable electrical isolation of the
operating and load voltage in accordance with IEC 60204-1.
Through the use of PELV circuits, protection against electric shock (protection against direct and indir-
ect contact) is ensured in accordance with IEC 60204-1.
Mount as follows:
•
Connect solenoid coils.
•
Connect proximity sensors (pin allocation
Tab. 2).
Pin allocation
Pin
Plug pattern
(Top view of device)
24 V DC supply voltage
1
1
4
3
Output (N/C contact)
4
0 V connection
3
Tab. 2
Pin allocation of the proximity sensor with 3-pin M8 plug according to EN 61076-2-104
Accessories for connecting solenoid coils and proximity sensors
www.festo.com/catalogue.
7
Commissioning
Note
Electrical safety outputs of programmable logic controllers (PLCs) can be parametrised
so that they send test pulses. The outputs are thereby tested in regular intervals. These
test pulses can result in maloperation of the control block. The safety function is then
no longer guaranteed.
•
Make sure that the length of the test pulses from PLC outputs does not exceed the
maximum permissible test pulse length of the solenoid valves used (
chap. 13).
