User`s guide
24 • Signal Connections
3.5 Ramping-down Signals PSD and MSD
There are two ramping-down (Slow−Down) signals PSD and MSD for one
axis. The relative signal name, pin number and axis number are shown in
the following table.
CN2 Pin No Signal Name
Axis #
39 PSD1 •
40 MSD1 •
45 PSD2 ‚
46 MSD2 ‚
89 PSD3 ƒ
90 MSD3 ƒ
95 PSD4 „
96 MSD4 „
The signals connection and relative circuit diagram is shown in the following
diagram. Usually, limit switches are used to generate the slow−down
signals to make motor operating in a slower speed. For more details of the
SD operation, please refer to section 4.3.1.
EX+24V
I
f
=6mA Max.
Filter
Circuit
To PCL5023
PSD
MSD
4.7K
EXGND
Inside PCI-8134
CN2
ß Switch