©
National Instruments Corporation
11
Getting Started with the NI 9502 and AKM Motors
—
White/Grey Stripes
NI AKM Motor
Thermal Sensor
Internal thermistor connection within
the motor which you can connect to
an external device for monitoring.
Under normal operating conditions at
a motor winding temperature of
140 °C or lower, the resistance is less
than or equal to 100
Ω
. When the
motor winding temperature exceeds
the NI AKM thermal trip point of
140 °C the resistance rapidly
increases. Refer to the
section for more
information.
—
Grey/White Stripes
NI AKM Motor
Thermal Sensor
—
Clear
Drain
Connected to the ground of the
encoder inside the NI AKM motor. NI
recommends connecting this drain
wire to the COM terminal on the
NI 9411; some applications may find
it beneficial to disconnect the drain
wire from the NI 9411 to improve
EMC immunity or emissions.
Table 4.
NI 9502 to AKM Feedback Cable Screw Terminal Lead Descriptions (Halls Portion)
NI 9502
Connection
Wire Color
Signal Name
Signal Description
4
Red
Hall 1
Hall Effect sensor 1.
5
Green
Hall 2
Hall Effect sensor 2.
6
White
Hall 3
Hall Effect sensor 3.
7
Black
COM
Hall Effect sensor COM.
—
Clear
Drain
Connected to the ground of the Hall
Effect sensor case inside the NI AKM
motor. NI recommends connecting this
drain wire to the COM terminal on the
NI 9502; some applications may find it
beneficial to disconnect the drain wire
from the NI 9502 to improve EMC
immunity or emissions.
Table 3.
NI 9502 to AKM Feedback Cable Screw Terminal Lead Descriptions (Encoder Portion) (Continued)
NI 9411 Connection
(NI 9411 Signal
Name)
Wire Color
Signal Name
Signal Description
