I
NSTALLING
AN
AMCI N
ETWORKED
D
RIVER
Networked Indexer/Driver User Manual
ADVANCED MICRO CONTROLS INC.
98
1.9 Digital Input Wiring
1.9.1 Cable Shields
Because they are low power signals, cabling from the sensor to the Networked Driver should be done using a
twisted pair cable with an overall shield. The shield should be grounded at the end when the signal is gener-
ated, which is the sensor end. If this is not practical, the shield should be grounded to the same ground bus as
the Networked Driver.
1.9.2 Input Wiring
All three inputs are differential, and can be wired to sinking or sourcing
sensors without requiring a pull up or pull down resistor. They accept 3.5 to
27 Vdc without the need for an external current limiting resistor. If using a
48 Vdc sensor, a 5 kilohm resistor that is wired in series with the input pin
is required. Figure T1.7 below shows how to wire a discrete DC sourcing
or sinking sensor to an input on the Networked Driver.
Figure T1.7 Wiring - Input 3
Encoders typically have differential outputs, but must be wired to the
driver in a specific way. More information on wiring an encoder is given
later in this chapter.
Figure T1.6 Input Schematic
Input
Optocoupler
Input ‘n’+
Input ‘n’-
INPUT+
INPUT+
INPUT–
INPUT–
+
+
+
+
–
–
5 to
24 Vdc
5 to
24 Vdc
PNP
Sourcing
Sensor
PNP
Sinking
Sensor
Out
Out
1.9.1
1.9.1
