Precautions for Safe Use Precautions for Safe Use „ Installation and Storage Do not store or use the product in the following places. • Locations subject to direct sunlight. • Locations subject to ambient temperature exceeding the specifications. • Locations subject to relative humidity exceeding the specifications. • Locations subject to condensation due to severe temperature fluctuations. • Locations subject to corrosive or flammable gases. • Locations subject to exposure to combustibles. • Locations subject to dust (especially iron dust) or salt. • Locations subject to exposure to water, oil, or chemicals. • Locations subject to shock or vibration.
„ Transportation, Installation, and Wiring Observe the following instructions during transportation, installation, and wiring. • Do not drop or apply a strong impact on the product. Doing so may result in damaged parts or malfunction. • Do not hold by the front cover, but hold by the fins during transportation. • The specified wire size or larger one must be used for the power lines. Note 1. For wires connecting to the P, RB and N terminals use an MLFC wire (flame retardant Polyflex wire, dielectric strength of 600 V). Note 2. If the wiring length between the Regenerative Braking Unit and Braking Resistor exceeds 10 m, use the wire size larger than the specified one.
10 Model (3G3AX-) Connectable resistance P, RB, N connection wires SL1, SL2, MA1, MA2 connection wires Ground wire RBU21 17 Ω min. 3.5 mm2 min. 0.75 mm2 min. 5.5 mm2 min. RBU22 17 Ω min. 3.5mm2 min. RBU23 8 Ω min. 5.5 mm2 min. 5 to 7.9 Ω 8 mm2 min. 4 to 4.9 Ω 14 mm2 min. RBU24 4 Ω min. 14 mm2 min. 3 to 3.9 Ω 22 mm2 min. 2 to 2.9 Ω 38 mm2 min. RBU41 34 Ω min. 3.5 mm2 min. RBU42 17 Ω min. 3.5 mm2 min. 13 to 16.9 Ω 5.5 mm2 min. 10 to 12.9 Ω 8 mm2 min. RBU43 10 Ω min. 8 mm2 min. 7.5 to 9.9 Ω 14 mm2 min. 6 to 7.4 Ω 22 mm2 min.