STAC6 Drives and Microstepping Motors:
User Manual
(Discontinued Product)
• 3.10 •
3:
C O N F I G U R A T I O N
What happens when a limit switch is activated will depend on the
programming mode and the commands being used. Please refer to
the programming manual for details of Limit Switch Input errors.
MOTION OUTPUT
Motion Output Y2 is used to tell another piece of electronics what
the drive is doing in velocity mode. Signalling motor motion can be
done in one of two ways: Y2 can be closed when the motor is
moving and open when it is stopped, or Y2 can be open when
moving and closed when stopped. For tachometer output (a signal
proportional to the motor speed), Y2 can emit pulses as the motor
turns. The default setting provides 100 square wave pulses per
revolution, assuming a 1.8° motor is used. Otherwise, factor 2 times
the motor electrical frequency.
Additional settings or 200, 400, 800 and 1600 pulses/rev are
available for drives with DSP firmware version 1.02 or later.
However, the signal may not be accurate at higher speeds. Refer to
the table below for details.
tach ppr
accurate at speeds
100
0 - 50 rev/sec
200
0 - 25
400
0 - 12.5
800
0 - 6.25
1600
0 - 3.125
Note: Signal integrity is best with an 80 mA load (use 300 ohms at
24V, 150 ohms at 12V or 62 ohms at 5V.)
MOTOR ENABLE INPUT
The Motor Enable Input is used to turn the power stage of the drive
on and off. This means the drive can be powered on, but the motor
will not be active.
