Product Description:

The E542MC-0000-9 is a brush-type DC servo motor produced by Kollmorgen within the ServoDisc Pancake DC Motors series. With its flat armature design, the unit provides torque in a compact envelope for precision axes in industrial automation. It converts controlled armature current into proportional shaft torque, enabling machine builders to position loads with rapid response and minimal cogging. Applications include semiconductor handlers, indexing tables, and small robotic joints where low inertia is critical.

At its continuous operating point, the motor delivers a shaft speed of 5000 rpm when supplied with the nominal armature current of 2.8 A. Each ampere produces torque according to a constant of 0.105 Nm/A, so the controller can calculate drive output directly from commanded current. Back electromotive force rises linearly with velocity at 11.0 V/krpm, a value used to determine the minimum DC bus voltage required to reach the rated speed. The copper windings present 1.60 Ω of resistance; this value establishes I²R heating and affects thermal limits under steady loads. Dynamic behavior is supported by an inductance of 5.20 mH, which provides electrical filtering for current loops and influences drive bandwidth.

The motor can be accelerated beyond its nominal operating point to 6000 rpm for transient moves, provided the drive limits current to the permissible peak value of 21 A. Such bursts create high step torque while keeping operation within the safe electrical range. When the rotor is locked, torque generation draws a stall current of 3.2 A, a figure useful for sizing power supplies that must hold a load in position without motion. Current changes settle quickly because the electrical time constant is 2.6 ms, allowing the control loop to issue rapid corrections during high-bandwidth positioning tasks.