Rockwell Automation 8510 AC Spindle Drive System User Manual - Manual (Page 59)

Interface Signal Descriptions
Chapter 7
7-55
Analog Inputs
The analog inputs are single ended inputs with the following
characteristics:
Maximum Input Voltage Range:
±
10V DC
A/D Converters Two converters selectable via software controlled
analog switches. Standard converter for spindle and
positioning applications and optional converter for
continuous path contouring applications and torque
mode operation.
A/D Resolution-Standard Converter
Effective 14 bits over
±
10V DC or 1.22 mV = 1 LSB.
Within –0.039 < x < +0.039 range, 0.076 mV = 1 LSB
Sample Rate
Small Input Change: 0.8 ms
Large Input Change:
≤
26.4 ms
A/D Resolution-Optional Converter:
True 14 bits over
±
10V DC or 1.22 mV = 1 LSB
Sample Rate: 0.8 ms
Noise Filtering: Baluns, Capacitors, and Clamp Diodes
The drive continuously samples to determine long term zero reference drift
of the analog circuitry within the drive and compensates for this drift.
Analog Outputs
The two analog outputs are single ended outputs suitable for driving
voltmeter displays or providing input signals to other electronic control
devices. The outputs have the following characteristics:
Output Voltage:
±
10V DC
D/A Resolution: 12 bits over
±
10V DC or 11 bits over 0-10V DC
4.88 mV = 1 LSB
Output Update Interval: 1.6 ms
Output Current: 1 mA typical, short circuit protected
Output Impedance: 440 Ohms
Noise Filtering: Baluns and Capacitors
Output: Output capable of driving normal loads such as meters
and analog input circuits through normal shielded or
unshielded cables.
The outputs can be configured through programming to provide either
unipolar or bipolar outputs. The unipolar output represents the absolute
value of the variable while the bipolar output represents both magnitude
and direction of the variable.
Serial Port
The Serial Port can be jumper configured for RS-422 or RS-232 serial
communications with a baud rate of 9,600 baud.