Omron H7EC - Page 136

C-142
Up/Down Counting Meter
K3NC
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Output Operation Timing in RUN Mode (Relay and Transistor Outputs)
The K3NC can output the results of Up/Down counting as comparative outputs.
The output mode can be set to the ALL-H mode or the ALL-L mode.
While the reset signal is ON, the counting value will return to zero.
When the compensation signal is ON, the K3NC will be in counting operation starting with the preset compensation value. Depending on the setting
conditions, the compensation value will be effective only for the incrementing operation.
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Output Delay (Reference Value)
The following table shows the time required for a K3NC in a system to go into reverse output operation after the counting value reaches the value
preset with the K3NC, and is due to the output processing time of the K3NC, signal transmission time of the system, and the relay connected to
the K3NC.
Note:
Output delay time varies with the operating environment. If the output delay time will possibly have a serious influence on your system, check
the actual output delay time before applying the K3NC to the system.
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Input Mode and Counting Values
Note: 1.
“B” must be larger than half the minimum signal width. If it is smaller, an error of
±
1 count may occur.
2.
Refer to the following for the meanings of the H and L characters in the above timing charts.
ALL-H ALL-L
Note: Set value 2 < compensation value < set value 3 Note: Set value 2 < compensation value < set value 3
Measured value
Set value 5
Set value 4
Set value 3
Set value 2
Set value 1
Reset
Output 5
Output 4
Output 3
Output 2
Output 1
See note
Measured value
Set value 5
Set value 4
Set value 3
Set value 2
Set value 1
Reset
Output 5
Output 4
Output 3
Output 2
Output 1
See note
If the ALL-H output mode is selected, outputs 1 to 5 will be
ON when the measured value exceeds set values 1 to 5.
Compensation
value
If the ALL-L output mode is selected, outputs 1 to 5 will be
ON when the measured value is less than set values 1 to 5.
Compensation
value
Control I/O Output or response delay time
Relay contact output 3.0 to 10.0 ms
NPN/PNP transistor output 0.1 to 0.6 ms
Reset input 12.0 to 16.0 ms
Compensation input 12.0 to 16.0 ms
Bank switch 60.0 to 100.0 ms
u-d b
: Up/Down B individual input
u-d c
: Up/Down C phase difference input
Signal No-voltage input
H Short-circuit
LOpen
INA
INB
Counting
value
INA
INB
Counting
value