Rockwell Automation 8510 AC Spindle Drive System User Manual - Manual (Page 72)

Interface Signal Descriptions
Chapter 7
7-68
Thermal Switch – CN3-13 & 20
Thermal switch that is embedded in the motor windings to indicate a motor
overtemperature condition.
Cable Shields – CN3-1, 2, 3 & 4
The resolver cable must contain twisted shielded pairs with an additional
overall shield and all shields must be terminated to these pins.
Orient Feedback Signals Connector CN2 provides the connection to the orient feedback sensor when
the drive is being used to perform spindle orient. If spindle orient is being
done by the CNC, the sensor must be connected to the CNC and not to the
drive. Either an optical encoder or the high resolution magnetic sensor can
be terminated to this connector. Refer to Figure 7.3 for the connector
location. Refer the Chapter 8 for specific wiring instructions for each
feedback type.
Optical Encoder Feedback
Use an Allen-Bradley 845T series encoder with a type 33 electrical
interface or an equivalent optical encoder with an A, B, and Z channel that
uses a push-pull type single ended output and a +12V DC input voltage.
Encoder line count should be selected to meet the application requirements.
Maximum input frequency is 250 kHz. The encoder must be mounted with
a 1:1 mechanical connection to the spindle shaft that is being oriented.
Encoder Channel A Input and Ground – CN2-16 & 10
Channel A output from the orient optical encoder.
Encoder Channel B Input and Ground– CN2-15 & 9
Channel B quadrature output from the orient optical encoder.
Encoder Channel Z Input and Ground – CN2-14 & 8
Channel Z marker pulse output from the orient optical encoder.
Encoder Power Supply and Ground – CN2-6 & 4
Control power, +12V DC, to the optical encoder.
High Resolution Magnetic Sensor
With the 8610SA-PSA sensing head and matching 8510SA-PGxxx
feedback gear, orient resolutions of 225,000 to 500,000 parts per revolution
can be obtained. The sensing head provides offset sine waves for the
analog A, B, and Z channel outputs. Refer to Chapter 1 for a more
complete description of this function.
Magnetic Sensor Channel A Input – CN2-19 & 13
Channel A sine output from the high resolution magnetic sensor.