[Design Precautions]
!
WARNING
• Configure safety circuits external to the programming 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) Emergency stop circuits, protection circuits, and protective interlock circuits for conflicting
operations (such as forward/reverse rotations or upper/lower limit positioning) must be
configured external to the programmable controller.
(2) When the programmable controller detects an abnormal condition, it stops the operation and
all outputs are:
• Turned off if the overcurrent or overvoltage protection of the power supply module is
activated.
• Held or turned off according to the parameter setting if the self-diagnostic function of the
CPU module detects an error such as a watchdog timer error.
Also, all outputs may be turned on if an error occurs in a part, such as an 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 "General Safety Requirements" in the MELSEC-L
CPU Module User's Manual (Hardware Design, Maintenance and Inspection).
• Configure a circuit that turns on an external power supply when the main power of
programmable controller is turned on. If the external power supply is turned on first, it could
result in an output error or an operating error.
CF卡 GT05-MEM-128MC
Q系列PLC内存卡 Q2MEM-1MBS
CF卡 GT05-MEM-16GC
Q系列PLC存储卡 Q3MEM-8MBS-SET
闪存卡 QD81MEM-8GBC
CF卡 GT05-MEM-512MC
CF卡 GT05-MEM-256MC
Q系列编程器ATA卡 Q2MEM-32MBA
模块 A1SJ71ME81
Q系列PLC线性快闪存储卡 Q2MEM-4MBF
CF卡 GT05-MEM-8GC
Q系列编程器ATA卡 Q2MEM-16MBA
MES接口模块附件 GT05-MEM-128MC
Q系列编程器ATA卡 Q2MEM-8MBA
Q系列PLC线性快闪存储卡 Q2MEM-2MBF
Q系列编程器SRAM卡用电池 Q2MEM-BAT
MES接口模块 QJ71MES96
Q系列编程器SRAM卡用电池 Q3MEM-BAT
闪存卡 QD81MEM-4GBC
闪存卡 QD81MEM-1GBC
存储卡 Q1MEM-64S
存储卡适配器 GT05-MEM-ADPC
闪存卡 QD81MEM-512MBC
Q系列PLC存储卡用适配器 Q2MEM-ADP
可选功能板 GT16-MESB
Q系列PLC内存卡 Q3MEM-4MBS
CF卡 GT05-MEM-1GC
Q系列PLC存储卡 Q3MEM-4MBS-SET
MES接口模块附件 GT05-MEM-256MC
CF卡 GT05-MEM-4GC