ADLINK HSL-4XMO - Manual (Page 31)

Signal Connections 21
Figure 3-4: Connection to Line Driver Output
Connection to Open Collector Output
To connect with an open collector output, an external power sup-
ply is necessary. Some motor drivers can provide the power
source. The connection between the HSL-4XMO, encoder, and
the power supply is shown in the diagram below. Note that an
external current limiting resistor R is necessary to protect the HSL-
4XMO input circuit. The following table lists the suggested resistor
values according to the encoder power supply.
X I
f
= 6mA max.
Encoder Power (VDD) External Resistor R
+5V 0
Ω
(None)
+12V 1.8k
Ω
+24V 4.3k
Ω
Table 3-1: Encoder Power / External Resistor