Wiring Diagram; Interfacing To Encoder Outputs - Automationdirect.com DL05 User Manual

Wiring Diagram

A general wiring diagram for encoders to the DL05 in HSIO Mode 20 is shown below.
Encoders with sinking outputs (NPN open collector) are probably the best choice for
interfacing. If the encoder sources to the inputs, it must output 12 to 24 VDC. Note
that encoders with 5V sourcing outputs will not work with DL05 inputs.
Interfacing to The DL05's DC inputs are flexible in that they detect current flow in either direction,
Encoder Outputs so they can be wired to an encoder with either sourcing or sinking outputs. In the
following circuit, an encoder has open-collector NPN transistor outputs. It sinks
current from the PLC input point, which sources current. The power supply can be
the +24VDC auxiliary supply or another supply (+12VDC or +24VDC), as long as the
input specifications are met.
In the next circuit, an encoder has open-emitter PNP transistor outputs. It sources
current to the PLC input point, which sinks the current back to ground. Since the
encoder sources current, no additional power supply is required. However, note that
the encoder output must be 12 to 24 volts (5V encoder outputs will not work).
High-Speed Input and Pulse Output Features
Signal Common
Phase B
Phase A
Encoder Input Wiring
Encoder Output,
(one phase)
Output
(sinking)
Ground
Encoder Output,
(one phase)
+12 to 24VDC
Output (sourcing)
Ground
+
12 – 24 VDC
–
Encoder
Input
(sourcing)
12 24 VDC Supply
– + Common
Phase A or B Input
Input
(sinking)
Common
3–19
Phase A or B Input