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1 Introduction
Additional Information
As a general guideline, to satisfy the above timing specifications, you must pay attention to the
type of output driver of the encoder being used, the length of the encoder cable and the fre-
quency of the count pulses generated. For example, if you use an Open Collector encoder (e.g.
E6B2-CWZ6C) at 24 V with 10 m cable, you can typically generate count pulses up to 20 kHz.
Therefore, if you want to generate count pulses with higher frequencies, you should use a differ-
ent type of encoder (e.g. E6B2-CWZ1X with Line Driver output or a fast push-pull 24 V encoder,
e.g. E6C2-CWZ5GH) or reduce the length of the encoder cable.
1-3-4
Output Specifications
Item
Driver Type
External Power Supply
Maximum Switching Capacity
Minimum Switching Current
Output ON-delay
Output OFF-delay
Leakage Current
Residual Voltage
Short Circuit Protection
Additional Information
• Every Digital Output has 2 Output drivers available: NPN and PNP (available as separate pins
on the front connectors). Every Output can be separately configured for NPN or PNP from
Edit Special Unit Settings in Sysmac Studio. By default the Outputs are set to NPN-output
(refer to 3-5-4 Output Control Configuration).
• Each Digital Outputs is insulated from the I/O-bus but not from the other Digital Outputs. They
are not protected from short circuit.
• The Output current must not exceed 200 mA per common (i.e. per 2 Digital Outputs) Other-
wise the unit will be damaged.
• Digital Outputs can be set either to automatic or manual outputs from Edit Special Unit Set-
tings in Sysmac Studio. The manual output control uses the manual output control bit for each
I/O port for the output data. (Refer to 3-5 Output Control)
• You can select the method to control the output states for when the CPU Unit operating mode
is changed from RUN to PROGRAM, or when an I/O bus check error or an overflow/underflow
error occurs (refer to 3-5-4 Output Control Configuration).
1-12
Specification
Open Collector (NPN/PNP selectable)
12 to 24 VDC (10.2 to 26.4 V), 30 mA max. at 26.4 VDC (for PNP output, without load
current)
46 mA at 10.2 V to 100 mA at 26.4 V (200 mA maximum/common)
(see picture below)
5 mA
100 µs max.
100 µs max.
0.1 mA max.
1.5 V max.
No
CJ-series High-speed Counter Units Operation Manual for NJ-series CPU Unit(W492)
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