maxon motor control
MCD EPOS P Programmable Compact Drive
Document ID: rel2895
4-21
MCD EPOS P 60 W Hardware Reference
Edition: December 2011
© 2011 maxon motor. Subject to change without prior notice.
Wiring Example: “Different Types of Proximity Switches”
Figure 4-9
DigIN1…4 – Wiring Example for different Types of Proximity Switches
Best Practice
• Preferably, use 3-wire PNP proximity switches.
• Using 3-wire NPN proximity switches requires an additional pull-up resistor.
R
ext
(12 V) = 1 k
Ω
(150 mW)
R
ext
(24 V) = 5 k
Ω
(120 mW)
• By principle, using 2-wire proximity switches is possible. Thereby observe a minimal load current of
approximately 5 mA. Depending on type, an additional parallel resistor may be required.
