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发明公开
CN106602935A 电动机驱动装置 有权

电动机驱动装置
摘要：
本发明提供一种具备制动装置的电动机驱动装置，该电动机驱动装置具备：电动机电流检测部，其检测电动机电流；制动解除判定部，其在接收到制动解除指令时，在向制动线圈施加电压并以规定负荷使电动机运转时所检测出的电动机电流比制动正常解除时电流大的情况下，判定为制动未被解除，在所检测出的电动机电流为制动正常解除时电流以下的情况下，判定为制动已被解除；制动线圈电压变更部，在判定为制动未被解除时，该制动线圈电压变更部将施加于制动线圈的电压变更为更大的值；变更履历存储部，其存储变更后的电压和变更日期时刻；以及寿命预测部，其基于变更后的电压和变更日期时刻、以及预先存储的故障时制动线圈电压来计算制动装置的预测寿命。
摘要（英）：

A motor drive apparatus includes: a motor current detection unit; a brake release determination unit that determines that the brake is not released when the motor current detected when the motor is operated under a predetermined load by application of a voltage to a brake coil is larger than a current for when the brake is normally released; a brake coil voltage change unit that changes a voltage applied to the brake coil when it is determined that the brake is not released to a larger value; a change history storage unit that stores the voltage after being changed and change date and time; and a life prediction unit that calculates a predicted life of the brake apparatus based on the voltage after being changed and the change date and time and the previously stored failure-time brake coil voltage.

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