Rockwell Automation 1394 SERCOS Interface Multi-Axis Motion Control System Installation Manual User Manual
Page 48

Publication 1394-IN002B-EN-P — February 2004
2-16
1394 SERCOS Interface Connector Data
Figure 2.9
Enable, Home, and Overtravel Digital Input Circuits
Figure 2.10
Registration Digital Input Circuits
The following table provides a description of the digital input
specifications, as shown in figures 2.9 and 2.10.
3k
Ω
1000 pF
511
Ω
IO_COM
VCC
CTRL_INPUT
1k
Ω
1394 System Module
Customer-Supplied Input
24V dc
Discrete
Input Pins
1, 2, 5, 6
Discrete
Input Pin 7
I/O Supply
Input
3k
Ω
1000 pF
511
Ω
VCC
CTRL_INPUT
IO_COM
+24V dc
1k
Ω
Customer-Supplied Registration
1394 System Module
Discrete
Input Pins
4 and 8
Discrete
Input Pin 3
I/O Supply
Input
Parameter
Description Minimum
Maximum
ON State Voltage
Voltage applied to the input, with respect to
IOCOM, to guarantee an ON state.
17.5V dc
38V dc
ON State Current
Current flow to guarantee an ON State
5.0 mA
15.0 mA
OFF State Voltage
Voltage applied to the input, with respect to
IOCOM, to guarantee an OFF state.
—
6.9V dc
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