User Manual EM303B General Purpose Inverter 12.4 Braking Unit Separate BR100 braking unit is available for EM303B-018~400 which are without an integrated braking unit, power rang of BR100: 18.5 ～ 315kW. SINEE-make BR100 models are as shown in the following table. Remarks: When BR100-160 is with minimum resistance, and when brake duty ratio D≤33%, braking unit can work continuously, it needs to work non-continuously when brake duty ratio D>33%. Otherwise, braking unit will trip over-heating. 12.5 Connecting Cable Since all braking unit and braking resistors work at a high voltage (>400VDC) in a non-continuous working status, please select applicable cable.
See Table 11-2 for specifications of main circuit cable, and take the cable which meets the insulation and cross-section requirements. Table 11-2 Cable for Braking Unit and Braking Resistor Soft cable possesses a better flexibility, so copper cable, soft heat-proof cable or flame-proof cable is suggested because the cable may contact the equipment with high temperature.The distance between braking unit and inverter shall within 2m. Otherwise, the cable on DC side shall be twisted and shielded with magnetic ring to reduce radiation and induction. Refer to User Manual of BR100 Braking Unit for 11.3, 11.4 and 11.5.
12.6 Chassis for Floor Mounting 6 modes, EM303B-055~075, EM303B-090, EM303B-110~132, EM303B-160~200, EM303B-220~280,and EM303B-315~400,can be floor-mounted with a chassis which is in the same width as the inverter. See Figure11-2 as a reference. Please order the extra chassis if needed. See Figure 11-3 as a reference for installation, and see Figure 11-4 and Table 11-3 for the installation dimensions of chassis and foundation bolts. 174 Minimum Average Brake Peak Brake Inverter Model No.
Application Resistance Current Current Power Range (Ω) I (A) av I (A) max （kW） BR100-045 Dynamic Brake 10 45 75 18.5～45 BR100-160 Dynamic Brake 6 75 150 55～160 BR100-315 Dynamic Brake 3 120 300 185～315 Average Brake Peak Brake Current Cross-section of Copper Model No. Current I (A) av I (A) max Cable (mm2) BR100-045 45 75 6 BR100-160 75 150 10 BR100-315 120 300 16