188
Power Interruptions
Section 8-2
Note
The above description assumes that the power interrupt detection delay set in
the CPU Unit is 0 ms.
A detailed timing chart for Customizable Counter Unit power interruption is
provided below.
Power Interruption Timing Chart
Note
1.
Depending on the slot to which the Customizable Counter Unit is mounted,
it may not be possible to complete power interruption processing correctly
(e.g., saving counter values, ending instruction execution, etc.).
2.
When the Customizable Counter Unit is restarted from the CPU Unit, pow-
er interruption processing is not performed and saving counter values and
ending instruction execution will not be possible. Whenever possible, stop
the Customizable Counter Unit using the RUN/STOP Command Bit before
resetting it from the CPU Unit. (Even in this case, counter values will not
be held correctly.
85% of the rated voltage or less
Power supply
voltage
AC: 0 to 10 ms
DC: 0 to 5 ms
Power interruption not
detected; operation
continues.
Operation will continue or
stop depending on whether
or not the power interrup-
tion is detected.
Power interruption detected and opera-
tion stops.
Time
Power supply
voltage
AC: 10 to 25 ms
DC: 5 to 25 ms
25 ms and longer
Power supply
voltage
25 ms
0 ms
AC: 10 ms
DC: 5 ms
85% of rated
voltage
Power OFF
detected signal
Customizable
Counter Unit
status
CPU reset signal
Operation always stopped
at this point regardless.
Internal 5-V power after interrupt
detection
Power hold time: Fixed at 10 ms
Power OFF detected
Power OFF detected
Processing time after
power interrupt detection
(10 ms
−
power interrup-
tion detection delay)
Default power inter-
ruption detection
time: 10 to 25 ms
(not stable)
Power interruption
detection delay: 0 to
10 ms (set in PLC
Setup in CPU Unit)
Normal operation
Internal standby processing
Stopped
Summary of Contents for CS1W-HCA12-V1
Page 2: ......
Page 6: ...vi...
Page 20: ...xx Conformance to EC Directives 7...
Page 38: ...18 Models and System Configurations Section 1 2...
Page 78: ...58 Fail safe Circuits Section 3 5...
Page 138: ...118 AR Area Section 6 4...
Page 204: ...184 Improved Instructions Section 7 14...
Page 222: ...202 Cycle Time Section 8 3...
Page 240: ...220 Troubleshooting Flowcharts Section 9 5...
Page 244: ...224 Precautions when Using the CX Programmer Appendix A...
Page 252: ......
Page 253: ......