Mitsubishi Electric MELSEC iQ-R Series - Handling Precautions

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5 INSTALLATION AND WIRING
5.8 Mounting/Removing a Module or Terminal Block
Handling precautions
This section describes precautions for the handling of a module.
• Do not drop or apply strong shock to the module, SD memory card, extended SRAM cassette, terminal block connector,
and pin connector.
• Do not disassemble or modify the modules and extended SRAM cassettes. Doing so may cause failure of the module.
• Tighten each screw within the following torque range.
• Mount a power supply module on the slot for the module (except the base unit which is not required the power supply
module). Failure to do so cannot guarantee the operation because of the unstable voltage even if the module which is
mounted on the base unit operates.
• Do not install extension cables together with the main circuit lines (high voltage and large current). Keep a distance of
100mm or more between them.
• Malfunction of the module may occur if the foreign matter such as the conductive dust contacts with the module surface
other than front during the operation. Protect modules by attaching a blank cover module (RG60) to a connector where no
module is mounted.
Screw Tightening torque range
Module fixing screw (M312) 0.36 to 0.48Nm
Terminal block screw (M3) 0.42 to 0.58Nm
Terminal block mounting screw (M3.5) 0.66 to 0.89Nm
Connector screw (M2.6) 0.20 to 0.29Nm
Terminal screw (M4) of a power supply module 1.02 to 1.38Nm
Terminal screw (M3.5) of a power supply module 0.66 to 0.89Nm