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Digital Outputs
Every Digital Output (O0 and O1) can be used in a NPN- or PNP-configuration depending on your
application needs. This configuration is done with Edit Special Unit Settings screen of Sysmac Stu-
dio. (refer to 3-5-4 Output Control Configuration for more details). After you have configured the Dig-
ital Outputs for NPN or PNP you should make sure to use the corresponding NPN or PNP output pin.
Digital Inputs
The Digital Inputs should be supplied with 24 VDC signals. Every Digital Input (I0 and I1) is
equipped with a separate Ground Signal (0V) and has its own electronic input circuitry. This gives
you the opportunity to connect sensors either with a NPN- or PNP-output driver. By making the
appropriate Special Unit setup it is possible to assign multiple Digital Inputs to single Counters (refer
to 3-4 Digital Input Functions for more details).
Counter Inputs
To the Counter Inputs of the High-speed Counter Unit signals can be applied originating from one of
the following driver types:
• RS-422 Line Driver
• 5, 12 and 24 VDC signals from NPN- or PNP Drivers
The Unit allows you to connect Line Driver signals and 24 VDC signals to any Counter. The following
table gives an overview of which driver signals can be applied to which Counters:
Counter 1
Counter 2
2-3-2
Connector Wiring Methods
Precautions for Safe Use
• Prevent wire clippings, cutting chips or other materials from getting inside the Unit. They could
cause scorching, failure, and malfunction. Pay particular attention to this during installation
and take measures such as covering with a cover.
• If the Unit was shipped from the factory with the dust protection label on top of the unit, be sure
to remove that label before switching ON the power. The label prevents heat dissipation and
could cause a malfunction.
• Be sure that all the connectors are wired correctly and properly connected to the High-speed
Counter Unit, to prevent the Unit from malfunctioning.
To wire the CJ1W-CT021 in order to connect the external signals (Power Supply, the Digital I/O and the
Counter Inputs) two methods are available:
1
Directly connecting the wires and cables to the external connector, which is standard delivered
with the High-speed Counter Unit
2
Indirectly connecting the wires and cables to the screw terminals of a Terminal Block Unit. The
Terminal Block Unit is connected to the Unit with a standard (flat-) cable. Both parts can be
ordered separately.
CJ-series High-speed Counter Units Operation Manual for NJ-series CPU Unit(W492)
Line Driver
5 VDC
•
•
•
2 Components, Installation and Wiring
12 VDC
24 VDC
•
•
•
2
2-9
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