Getting Started with NI SMD-7620/7621 and NI 9512 Modules
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© National Instruments
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7
Step 4: Connect the Drive Command Signals
Complete the following steps to connect the Drive Command signals to the NI 9512 terminal
block.
1.
Connect the SMD-7620/7621 X1/STEP- terminal (pin 2) to the 37-pin terminal block
Step (CW)+ terminal (pin 18).
2.
Connect the SMD-7620/7621 X2/DIR- terminal (pin 4) to the 37-pin terminal block
Direction (CCW)+ terminal (pin 16).
3.
Connect the SMD-7620/7621 X1/STEP+ terminal (pin 1) and X2/DIR+ terminal (pin 3) to
the 37-pin terminal block +5V OUT terminal (pin 9).
Figure 4 shows the SMD-7620/7621 Drive Command and I/O Connector location and pinout.
Figure 4.
SMD-7620/7621 Drive Command and I/O Connector
Step 5: Connect the Drive Ena
b
le Signal
Complete the following steps to connect the Drive Enable signal, which controls the enable
function of the drive:
1.
Connect the X3/EN- terminal (pin 6) to the 37-pin terminal block COM terminal (pin 5).
2.
Connect the X3/EN+ terminal (pin 5) to the 37-pin terminal block Drive Enable terminal
(pin 33).
Step 6: (Optional) Connect the Drive Fault Signal
Complete the following steps to map an NI 9512 digital input to the SMD-7620/7621 Y1
programmable output signal to monitor the NI SMD-7620/7621 stepper drive for faults:
1.
Connect the Y1+ terminal (pin 11) to the 37-pin terminal block Vsup terminal (pin 22).
2.
Connect the Y1- terminal (pin 12) to the 37-pin terminal block DI 0 terminal (pin 4).
A+ A-
B-
B+
L N
X1/
S
TEP+
X1/
S
TEP–
X2/DIR+
X2/DIR–
X
3
/EN+
X
3
/EN–
GND
+5V OUT
(100 mA MAX)
Re
s
erved
Re
s
erved
Y1+
Y1–
Y2+
Y2–
Re
s
erved
1
2
3
4
5
6
7
8
9
10
11
12
1
3
14
15