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[Design Precautions]
WARNING
Configure safety circuits external to the programmable controller to ensure that the entire system
operates safely even when a fault occurs in the external power supply or the programmable
controller. Failure to do so may result in an accident due to an incorrect output or malfunction.
(1) Configure external safety circuits, such as an emergency stop circuit, protection circuit, and
protective interlock circuit for forward/reverse operation or upper/lower limit positioning.
(2) The programmable controller stops its operation upon detection of the following status, and the
output status of the system will be as shown below.
All outputs may turn on when an error occurs in the part, such as I/O control part, where the CPU
module cannot detect any error. To ensure safety operation in such a case, provide a safety
mechanism or a fail-safe circuit external to the programmable controller. For a fail-safe circuit
example, refer to Chapter 10 LOADING AND INSTALLATION in the QCPU User's Manual
(Hardware Design, Maintenance and Inspection).
(3) Outputs may remain on or off due to a failure of an output module relay or transistor. Configure
an external circuit for monitoring output signals that could cause a serious accident.
Output
All outputs are turned off.
All outputs are held or turned off according to
the parameter setting.
Overcurrent or overvoltage protection of the power supply module
is activated.
The CPU module detects an error such as a watchdog timer error
by the self-diagnostic function.
Status
速型電壓/電流輸入模擬量模塊 Q64ADH
主基板 Q312B
MELSECNET/H模塊 QJ71LP21-25
Q系列PLC線性快閃存儲卡 Q2MEM-2MBF
晶體管輸出模塊(彈簧夾接線端子) QY80-TS
鉑電阻型溫度調節模塊(升級版) Q64TCRTN
溫度輸入模塊 Q64RD，Q64RD-G
串行通信模塊 AJ71QC24N-R4
TTL CMOS輸出模塊 QY70
差動輸出定位模塊 QD75D4
繼電器輸出模塊 QY10
通道間隔離脈沖輸入 QD60P8-G
定位模塊(升級版) QD75P4N
過程CPU Q12PHCPU，Q25PHCPU
帶以太網類型的Q系列CPU Q03UDECPU
GI-62.5/125光纜型模塊 QJ72LP25GE
薄型電源模塊 Q61SP
電壓/電流輸出模擬量模塊 Q64DAN
電源模塊 Q61P
晶體管輸出模塊(源型) QY80
QCPU（Q模式）用總線連接電纜 GT15-QC30B
Ethernet模塊 AJ71QE71N-T
性能型QCPU Q25HCPU
A模式Q系列CPU Q06HCPU-A
更換用大容量電池模塊 Q8BAT
帶以太網類型的Q系列CPU Q04UDEHCPU
性能型CPU Q02CPU，Q06HCPU，Q25HCPU
處理速度更快的CPU Q04UDHCPU
TTL CMOS輸出模塊 QY71
GT11觸摸屏 GT1150-QLBD