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3G5A2-RPT01-E датащи(PDF) 70 Page - Omron Electronics LLC

номер детали 3G5A2-RPT01-E
подробное описание детали  Programmable Controllers
PDF  182 Pages
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3G5A2-RPT01-E датащи(HTML) 70 Page - Omron Electronics LLC

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57
3-4-4 Emergency Stop
You can use an external relay (CR in the following figure) to form an emergency
stop circuit that shuts down the system when PC operation stops. This can be
achieved by wiring the RUN output from the Power Supply Unit on the CPU Rack
as shown below.
MCB1
MCB2
CR1
Power supply
Control section
DC voltage
regulator
Transformer
or noise filter
Twisted-pair wires
PC RUN
output
+
–
DC
input/output
CR1
Surge suppressor
PC
3-4-5 Power Interruptions
A sequence circuit is built into the PC to handle power interruptions. This circuit
prevents malfunctions due to momentary power loss or voltage drops. A timing
diagram for the operation of this circuit is shown below.
Power supply
Power interrup-
tion detection
signal
Program execution
Momentary Power
Interruption Flag
(A40202)
CPU reset signal
RUN output
*0.3 to 1 ms for DC power.
85%
Power interruption
power interruption detection time: 10 to 25 ms*
Shutdown processing
Momentary power inter-
ruption time (default: 0 ms)
Initialization
Normal
Normal
Stops
Standby
Power retention time: 10 ms (fixed)
Power OFF
interrupt program
Power-ON
interrupt program
Power Supply Units
Section 3-4



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