Safety Precautions Operation 8 WARNING Do not remove the front cover during the power supply and 10 minutes after the power shutoff. Doing so may result in a serious injury due to an electric shock. Do not operate the switches with wet hands. Doing so may result in a serious injury due to an electric shock. Do not touch the inside of the Regenerative Braking Unit or terminals, and do not check a signal, wire, put on or take off the connectors while the power is being supplied. Doing so may result in a serious injury due to an electric shock or fire. CAUTION Do not touch the fins, Braking Resistors, which become too hot during the power supply and for some time after the power shutoff.
Doing so may result in a burn. The models of 3G3AX-RBU23/-RBU24/-RBU42/-RBU43 do not have terminals for the alarm input (R1, R2). Configure a sequence that enables the Inverter power to turn off when unusual overheating is detected. The 3G3AX-RBC Braking Resistor does not have a built-in thermal fuse. Be sure to use the alarm contact terminals (AL1, AL2) of the Resistor and configure a sequence that enables the Inverter power to turn off when unusual overheating is detected. Not doing so might result in a small-scale fire, heat generation or damage to the unit.