Omron M1 Series User Manual page 848

Multi-function compact inverter

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Note 1. For Speed, the forward rotation direction is indicated as positive. For Torque, the torque in the for-

ward rotation direction is indicated as positive.

Note 2. Calculate a braking torque according to Inverter Capacity Selection in the Motor Capacity Selection

 Braking Resistor Selection

Select a braking resistor from the required braking resistance and the average regenerative energy

obtained in this calculation.

• Required braking resistance ≥ Resistance of braking resistor ≥ Min. connection resistance of in-

• Average regenerative energy ≤ Resistance capacity of braking resistor

Note 1. Connecting a braking resistor whose resistance is less than the minimum connection resistance val-

ue of the inverter results in damage to the internal braking transistor. If the required braking resist-

ance is less than the minimum connection resistance, change the inverter to one having a larger ca-

pacity and ensure that the required braking resistance is not less than the minimum connection re-

Note 2. Make allowance for the resistance capacity of the braking resistor. Otherwise, it may be overheated.

Select a braking resistor whose capacity is at least 20% larger than the calculated value.

For vertical load

Average regenerative energy [W]

(P1+P2 ... +Pi)[J]

1 cycle time [s]

M1 Series EtherCAT Type User's Manual (I670)

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