Getting Started with NI SMD-7620/7621 and NI 73xx
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© National Instruments
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Step 6: Connect the NI SMD-7620/7621 to AC Power
Note
Do not apply power until after you complete
Step 9: Power on the Drive and
.
Complete the following steps to connect the NI SMD-7620/7621 to AC power.
1.
Connect an AC input cable to the line, neutral, and protective earth connectors as shown in
Figure 17.
2.
(Optional) Install a fuse on the AC input line as shown. The SMD-7620 contains an internal
8 A fast acting fuse. The SMD-7621 contains an internal 3.5 A fast acting fuse. If an
external fuse is desired, National Instruments recommends a 6 A fast acting fuse for the
SMD-7620 and a 3 A fast acting fuse for the SMD-7621 version.
3.
(Optional) If your application requires EMC compliance, install a Corcom 6ET1 line filter
in series with the AC input as shown.
Note
Refer to the
NI SMD-7620/7621 User Manual
for more information about
connecting to AC power.
Figure 17 shows the SMD-7620/7621 Power and Motor Connector location and pinout, with
optional fusing and line filters.
Figure 17.
SMD-7620/7621 Power and Motor Connector
A+ A-
B-
B+
L N
To Line (Hot)
To Ne
u
tr
a
l
To E
a
rth Gro
u
nd
F
us
e
Line Filter
Su
rge Protector