User Guide of EM730 Series Inverter 8.2 Braking unit For the EM730 series inverters (EM730-045-3 and above), use our BR100 series braking units (power range: 18.5-160kW). The models of our braking units are as follows. ★ When BR100-160 works with the minimum resistance, the braking unit can work continuously at the braking frequency D=33%. In the case of D>33%, intermittent operation will be performed; otherwise, the over-temperature protection will be enabled.
8.2.1 Selection of Connecting Wires Since all braking units and braking resistors work at high voltage (>400VDC) and in the 58 Wire (mm2) Motor (kW) Resistance Resistor Power Inverter Model Connected to (Ω) (W) Resistor EM730-0R4-2B 0.4 ≧360 ≧200 1 EM730-0R7-2B 0.75 ≧180 ≧400 1.5 EM730-1R5-2B 1.5 ≧180 ≧400 1.5 EM730-2R2-2B 2.2 ≧90 ≧800 2.5 EM730-0R7-3B 0.75 ≧360 ≧200 1 EM730-1R5-3B 1.5 ≧180 ≧400 1.5 EM730-2R2-3B 2.2 ≧180 ≧400 1.5 EM730-4R0-3B 4 ≧90 ≧800 2.5 EM730-5R5-3B 5.5 ≧60 ≧1000 4 EM730-7R5-3B 7.5 ≧60 ≧1000 4 EM730-011-3B 11 ≧30 ≧2000 6 EM730-015-3B 15 ≧30 ≧2000 6 EM730-018-3B 18.5 ≧30 ≧2000 6 EM730-022-3B 22 ≧15 ≧4000 6 EM730-030-3B 30 ≧10 ≧4000 6 EM730-037-3B 37 ≧10 ≧6000 6 Minimum Applicable Model and Average Braking Peak Current Application Resistance Inverter Power specification Current I (A) av I (A) max (Ω) (kW) BR100-045 Energy consumption braking 10 45 75 18.5 - 45 BR100-160 Energy consumption braking 6 75 150 55 - 160