FX3U Datasheet | Mitsubishi Electric

USER'S MANUAL - Positioning Control Edition FX3U/FX3UC SERIES PROGRAMMABLE CONTROLLERS Transistor Output FX3UC Main Unit [Japanese Model (Sink Output)] Line Driver Output FX3U-2HSY-ADP .. Safety Precautions (Read these precautions before using.) Before installing, operating, maintenance or inspecting this product, thoroughly read and understand this manual and the associated manuals. Also pay careful attention to handle the module properly and safety. This manual classifies the safety precautions into two categories: and . Indicates that incorrect handling may cause hazardous conditions, resulting in death or severe injury. Indicates that incorrect handling may cause hazardous conditions, resulting in medium or slight personal injury or physical damage. Depending on circumstances, procedures indicated by may also be linked to serious results. In any case, it is important to follow the directions for usage. Store this manual in a safe place so that you can take it out and read it whenever necessary. Always forward it to the end user. 1. DESIGN PRECAUTIONS Reference - Provide a safety circuit on the outside of the PLC so that the whole system operates to ensure the safety even when external power supply trouble or PLC failure occurs. Otherwise, malfunctions or output failures may result in an accident. 1) An emergency stop circuit, a protection circuit, an interlock circuit for opposite movements, such as normal and reverse rotations, and an interlock circuit for preventing damage to the machine at the upper and lower positioning limits should be configured on the outside of the PLC. 2) When the PLC CPU detects an error, such as a watch dog timer error, during self-diagnosis, all outputs are turned off. When an error that cannot be detected by the PLC CPU occurs in an input/output control block, output control may be disabled. Design external circuits and mechanisms to ensure safe operations of the machine in such a case. 3) When some sort of error occurs in...