A90 series Inverter User Guide 8.2 Brake Unit For A90 series Inverter A90-4T60 and the larger models ， Need to purchase BR100 series brake unit ， The brake power range is 18.5 ～ 160kW 。 The brake uint model is as follows ： ★ When BR100-160 adopts minimum resistance, if brake frequency of brake unit D=33%, it can continue to work. If D>33%, it needs to work intermittently, otherwise an overheat protection fault will occur. 8.2.1 Cable of brake unit All brake units, brake resistors are operating at high voltage> 400VDC, and in a non-continuous working condition, please select the appropriate wire. use, it’s better to use copper core or heat-proof flexible cable or fire-retardant cable.
Brake unit and Flexible cable has better flexibility. Since cable may contact high-temperature device during inverter should be as close as possible to each other, and it’s better to keep their distance no more than 2 m, otherwise DC side cable should be twisted and sheathed with magnetic ring to reduce radiation and inductance. 8.3 Detachable keypad options Detachable keypad is an option, please contact your agent or company marketing department. 41 Minimum Average brake Peak current Inverter power Model No. Use occasions resistance current I (A) av I (A) max (kW) (Ω) BR100-045 Energy consumption brake 10 45 75 18.5～45 BR100-160 Energy consumption brake 6 75 150 55～160 Model No.
Average brake current Peak current Section of copper core I (A) av I (A) max cable (mm2) BR100-045 45 75 10 BR100-160 75 150 16