[Al_The_Man]

Assuming they are servo's and not steppers, I would think there is a couple of possibilities, First if the gain is set too high there can be high current at stand still if they are typical PWM drives, I would still also check for tightness and binding. At standstill the motors should not be humming,buzzing or emitting a high pitch noise, there is usually a way of monitoring the current, sometimes by an output on the amplifier itself.
Al