69 
 
Appendix 1 Recommended Braking Unit and Resistor   
1. Megmeet provides four specifications of braking units, they are MDBU-4-90, MDBU-4-132, MDBU-4-200, 
MDBU-4-280. Refer to the braking unit User Manual for details. 
2. The drive of 75kW or below have internal brake units, without the need for external. For 90kW and above 
models, we need external brake unit. The specifications of drive, braking unit and braking resistor are shown 
as the following table, for other specifications please contact megmeet engineer. The following table is only 
our recommended values, specific configuration need engineer to calculate according to the system 
requirements. 
Attached Table 1-1 Braking resistor accessory for slewing, luffing (trolley) applications 
Drive model 
Braking resistor 
power (W) 
Braking resistor (Ω) 
MV600L-4T2.2  >= 260  >= 250 
MV600L-4T3.7  >= 390    >= 150 
MV600L-4T5.5  >= 520    >= 100 
MV600L-4T7.5  >= 780    >= 75 
MV600L-4T11  >= 1040    >= 50 
MV600L-4T15  >= 1560    >= 40 
MV600L-4T18.5  >= 4800    >= 32 
MV600L-4T22  >= 4800    >= 27.2 
MV600L-4T30  >= 6000    >= 20 
MV600L-4T37  >= 9600    >= 15 
MV600L-4T45  >= 9600    >= 13.6 
MV600L-4T55  >= 12000  >= 10 
MV600L-4T75  >= 19200  >= 10 
 
Attached Table 1-2    Braking resistor accessory for lifting applications 
Drive model 
Braking resistor 
power (W) 
Braking resistor 
(Ω) 
Braking unit 
configuration 
MV600L-4T2.2  >= 1.7  >= 150  / 
MV600L-4T3.7  >= 3.0  >= 100  / 
MV600L-4T5.5  >= 4.0  >= 75  / 
MV600L-4T7.5  >= 6.0  >= 50  / 
MV600L-4T11  >= 8.0  >= 40  / 
MV600L-4T15  >= 12.0  >= 32  / 
MV600L-4T18.5  >= 14.0  >= 27.2  / 
MV600L-4T22  >= 17.0  >= 20  / 
MV600L-4T30  >= 22.0  >= 15  / 
MV600L-4T37  >= 28.0  >= 13.6  /