The armature output of a drive is the main channel for power delivery to a DC motor. The armature output is meant to send variable DC voltage to the armature winding of a DC motor to create rotation. The field output of a drive is a channel of fixed voltage meant to energize the field winding of a shunt-wound motor. Energizing the shunt winding of a motor creates a magnetic field similar to that of magnets in a permanent magnet motor. It is extremely important not to wire the armature winding of a motor to the field output of a drive as this will cause catastrophic damage.