Product Description
The MAC AC motor series is a product family commercially manufactured by the giant company, Rexroth Indramat. Motors under this product line feature permanent magnets and electric commutators to convert alternating current electricity into usable mechanical energy in the form of shaft rotation. During nominal operation, the speed, power, and torque of MAC AC motors vary depending on their frame class, size, and other specifications. The MAC112B-0-LD-1-B/130-A-0/-I01250/S007 is a standard motor model from the MAC AC motor series, boasting a nominal speed of 2000 rpm and a standstill torque of 17.5 Nm and a standstill current of 26.5 A.
For AC MAC motors by Rexroth, the standstill values are the corresponding parameters exhibited by the machine during its starting transient period. Theoretically, the standstill values are generally higher than the machine's standard or rated values. This phenomenon is commonly observed for AC machines since the effective impedance of the machine is lower when initially at rest. Based on Rexroth's datasheet for MAC112B motors, the MAC112B-0-LD-1-B/130-A-0/-I01250/S007 has a winding resistance of 0.26 ohms and an inductance of 3.5 mH. Knowing these parameters, the machine's total impedance is 1.345 ohms, assuming a system frequency of 60 Hz. For 50 Hz systems, the effective total impedance goes down to 1.13 ohms.
At most, the current flowing through the MAC112B-0-LD-1-B/130-A-0/-I01250/S007's armature may reach 130 amperes. Although the machine can deliver a peak pulse current of 130 amperes, continuously operating it at this current might overheat and damage the machine permanently. At the standard current rating, the machine cools via natural convection since no axial or radial fans come with the product upon purchase. Finally, the product has a frame length of 385 millimeters, a centering diameter of 130 millimeters, and a mass of 36 kilograms.
Wake Industrial Warranty
