Digital I/O Connections - Technosoft IPS110 Technical Reference

3.2.7.1 Recommendations for Feedback Devices Wiring
a) Keep the ground connection between an encoder and the IPS110 even if the encoder supply
is not provided by the drive. When using shielded cable, connect the cable shield to the GND
at the IPS110 side. Leave the shield unconnected at the encoder side. Never use the shield
as a conductor caring a signal, for example as a ground line!. This situation can lead to a
worse behavior than a non-shielded cable
b) Always use shielded cables to avoid capacitive-coupled noise when using cable lengths over
1 meter. Connect the cable shield to the earth potential, at only one end. This point could be
either the IPS110 (using the GND pin) or the encoder / motor. Do not connect the shield at
both ends.

3.2.8. Digital I/O connections

3.2.8.1 5V Digital Inputs connection
+
IO#35 / Sin / LSP / CAPI
5V
+
IO#36 / Cos / LSN / CAPI2
5V
Remark: IO#35, Sin(in), LSP(in) and CAPI(in) lines are shared, also the IO#36, Cos(in), LSN(in)
and CAPI2(in) lines are shared. You cannot use these lines simultaneously as analog input and
digital input/output.
© Technosoft 2007
Digital Inputs
J2
J1
GND
7
Figure 3.11. 5V Digital Inputs connection
24
+3.3V
470R
+3.3V
470R
IPS110 Technical Reference
IPS110
v1.0
IO#35 (in/out)
Sin (in)
LSP (in)
CAPI (in)
IO#36 (in/out)
Cos (in)
LSN (in)
CAPI2 (in)
+3.3V