Bardac PLX - Pin 2 4 2; Pin 2 4 4

120 CHA NGE PARA METERS
E. g. Counts per degree at the motor shaft = 40. Reduction gearbox ratio = 3 : 1. Then counts per degree
at the spindle = 120. Note. In systems with reduction gearboxes, the motor encoder will provide more than
one marker per rev of the spindle. There are 2 w ays of overcoming this problem.
For non integer ratio and integer ratio gearing
1) Provide another marker which only occurs once
per rev of the spindle. E.g. A magnetic pick up
sensing a tab on the spindle.
OR For integer ratio gearing only
2) Use 240)M ARKER EN A BLE parameter to select
the required marker at the appropriate position. This
may be achieved by using a micros witch that
operates while the required marker is present but not
with the other markers.
6.10.9.5 SPINDLE ORIENTATE / Position reference PIN 242
Note. 242)POSITION REF may be adjusted at any time. If the system is above the zero lock threshold then
changing this value has no effect. It may be changed as many times as required whilst operating in the zero
speed lock region.
6.10.9.6 SPINDLE ORIENT A TE / Marker frequency monitor PIN 24 3
This output function measures the period bet ween successive marker pulses to accurately
compute the output frequency. This windo w has a branch hopping facility.
Note. For frequencies belo w 20 Hz, the monitor will display a random reading.
6.10.9.7 SPINDLE ORIENT ATE / In position flag PIN 244
Note. The flag may oscillate whilst the loop is settling if 122)ZERO SPEED LO CK (gain) is high enough to
cause overshoot. This windo w has a branch hopping facility.
SPINDLE ORIENT ATE 4
242)POSITION REF
242)POSITION REF
0
PARA METER RANGE DEFAULT PIN
POSITION REF + /- 30,000 counts 0 counts 242
Used to enter POSITION REF
referred to M ARKER OFFSET
M ARKER EN ABLE
Desired marker
SPINDLE ORIENT ATE 4
243)M ARKER FREQ MO N
243)M ARKER FREQ MO N
0.0 HZ
PARA METER RANGE DEFAULT PIN
M ARKER FREQ MON 20.00 to 655.37 HZ 0.0 HZ 243
Monitors the frequency of the
marker pulse on T15.
SPINDLE ORIENT ATE 4
244)IN POSITION FLA G
244)IN POSITION FLA G
LOW
PARA METER RANGE DEFAULT PIN
IN POSITION FLA G LO W or HIGH LOW 244
This goes high if the position
error is approx < 20 counts.