Deif PPM 300 - Page 73

Figure 6.14 Example of digital input wiring for safety functions (common = 0 V)
12/24 V DC
0 V DC
Digital
signal
COM
Figure 6.15 Example of digital input wiring for safety functions (common = 12 or 24 V)
12/24 V DC
0 V DC
Digital
signal
COM
Compliance with EN60255-26
If the wire to an open contact is over 10 m long, then additional measures are required for compliance with EN60255-26. You can
use a 1 kΩ resistor to common. Alternatively, you can use a twisted wire or a shielded wire to the open contact.
INSTALLATION INSTRUCTIONS 4189340909I UK Page 73 of 144