Mitsubishi Electric MELSEC-L LD75D, User Manual

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CHAPTER 4 INSTALLATION, WIRING, AND MAINTENANCE OF PRODUCT
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4.
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4.2
Installation
4.2.1
Installation precautions
The precautions for installing the LD75 are given below. Refer to this section as well as  Page 82, Section 4.1.3
when carrying out the work.
(1) Installation precautions
WARNING
● Shut off the external power supply for the system in all phases before mounting or removing a
module. Failure to do so may result in electric shock or cause the module to fail or malfunction.
CAUTION
●
Do not disassemble or modify the modules. Doing so may cause failure, malfunction, injury, or a fire.
●
Shut off the external power supply for the system in all phases before mounting or removing a
module. Failure to do so may cause the module to fail or malfunction.
●
After the first use of the module, the number of connections/disconnections is limited to 50 times (in
accordance with IEC 61131-2). Exceeding the limit may cause malfunction.
●
Use the programmable controller in an environment that meets the general specifications in the
manual "Safety Guidelines", the manual supplied with the CPU module or head module. Failure to do
so may result in electric shock, fire, malfunction, or damage to or deterioration of the product.
●
To interconnect modules, engage the respective connectors and securely lock the module joint levers
until they click. Incorrect interconnection may cause malfunction, failure, or drop of the module.