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Appendix B
MANUAL# 9675-1035-000-A
19
When
F RW R
and
REVERSE
are both open (signals are left floating) the spindle is off and spins freely.
However, the change from closed to open (
F RW R
and/or
REVERSE
on to both off) is also a signal to stop
(just like Emergency Stop); the drive is never supposed to coast to a stop.
The change from WYE to DELTA or vice versa occurs only when the drive is off (
F RW R
and
REVERSE
open) and the motor is stopped or below 50 rpm. When the CNC wants DELTA mode, the signal
WYE /
E T
is pulled low.
When the CNC wants LOW GAIN, the signal
HIGH /
W GAIN
is pulled low.
EST
and
F T
share the same I/O pin at the spindle drive. A spindle
F T
is declared by the spindle
drive. Status good is 10 VDC thru a 1K pull-up resistor. 0 VDC indicates a fault condition to the CNC. The
Fault output is open collector that can sink 500 mA max. When
EST
is asserted (signal is pulled low),
drive is to totally ignore
F RW R
,
REVERSE
, and the velocity command, and ramp down to a stop.
0.33uF
1.00K
40106
5
6
TO DSP
MMBD7000
1
3
40106
9
8
40106
3
4
HMA124
1
2
4
3
40106
13
12
TO DSP
10.0K
HIGH/LOW GAIN
+5V
4.99K
10.0K
FAULT
1.21K
+5V
MMBD7000
1
3
WY E/DELTA
TO DSP
IRLL014
4.99K
10.0K
HMA124
1
2
4
3
4.99K
REVERSE
+5V
MMBD7000
1
3
FROM DSP
+3.3V
+10V
2.00K
1.21K
40106
1
2
AGND
HMA124
1
2
4
3
+5V
10.0K
4.99K
TO DSP
FORWARD
+5V
HMA124
1
2
4
3
10.0K
10.0K
1.21K
+5V
1.00K
HMA124
1
2
4
3
10.0K
4.99K
MMBD7000
1
3
40106
1
2
1.21K
TO DSP
+5V
MMBD7000
1
3
MMBD7000
1
3
TO DSP
10.0K
1.21K
Controller I/O Schematic
