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Installation and Configuration
Ndrive HL User’s Manual
2-4
www.aerotech.com
2.2.3. Motor Connections (TB101)
The three-phase motor terminal connections are made at connections
A, B, C
and
optionally at
RT
. The
RT
connection is only used for brushless motors having a fourth
motor lead, as in a Wye configuration. Motor Connections ØA, ØB, ØC and its
Protective Ground should be made with 1.62814 mm (#14 AWG) wire rated at 300 V.
The motor frame and shield must be connected to
(ground) as well. See Section 2.4
for information on connecting each of the supported motor types.
Table 2-3.
TB101 Motor Power Output Connections
Pin
Description
Wire Size
ØA
Phase A Motor Lead
1.62814mm (#14 AWG)
ØB
Phase B Motor Lead
1.62814mm (#14 AWG)
ØC
Phase C Motor Lead
1.62814mm (#14 AWG)
RT
Brushless Motors with Wye connection only
1.62814mm (#14 AWG)
Earth Ground to Motor (Required for Safety)
1.62814mm (#14 AWG)
2.2.4. I/O and Signal Wiring Requirements
The I/O, communication, and encoder feedback connections are typically very low power
connections. Wire and connectors used for signal wiring should be rated for at least 30 V
and have a current capacity of at least .25 Amp. Wires and connectors used for low
voltage power connections such as +5V should have a current capacity of at least 1 Amp
(encoder fe5V supply may require .6 Amps in some applications). In some
applications, especially when there are significant wire distances, a larger wire size may
be required to reduce the voltage drop that occurs along the wire. This increase may be
necessary in order to keep the voltage within a specified range at a remote point.
When signal wiring is in close proximity to wiring operating at voltages above 60 Volts
the insulation rating of the signal wiring will also need to be rated for the higher voltage.
Signal wiring should have a voltage rating of at least 300 Volts when in proximity to AC
power or motor power wiring.
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