Rockwell Automation 8520 9/Series Hardware TAB 5 - Manual (Page 35)

Section 5A
9/440 Resolver–based CNC/Drive System
5A-33
Wiring a Probe for Rising Edge Configurations
Typical wiring of a simple contactor type touch probe configured to fire on
the rising edge of the probe signal, requires the addition of a 1000 ohm pull
down resistor. Figure 5A.20 shows a typical wiring diagram compatible
with most probe designs configured to trigger on the rising edge of the
probes signal.
Figure 5A.20
Typical Wiring of a Touch Probe Configured for Rising Edge Trigger
9/440 Resolver–based Control
Wiring Board
470 ohm
5V common
1000 ohm
+5 V dc
1000 ohm
pull down resistor
(customer supplied)
Probe Contact
to encoder interface 4
3
2
1
Wiring a Probe for Falling Edge Configuration
Figure 5A.21 shows a typical wiring diagram compatible with most probe
designs configured to trigger on the falling edge of the probe signal.
Figure 5A.21
Typical Wiring of a Touch Probe Configured for Falling Edge Trigger
11309-I
3
2
1
9/440 Resolver–based Control
Wiring Board
470 ohm
5V common
1000 ohm
+5 V dc
4
Probe Contact
to encoder interface