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Depending on the motor, it may not be using 7 amps. Also, there would be very little resolution, since it's a LEM Hass 300-s. There are 128 ticks of the A/D for each 300 amps. So, around 2 amps per tick of the A/D. Figure +/-1 tick of resolution, and it can only resolve +/- 2 amps. My guess is that the motor is using less than 7 motor amps, and so the PWM just ramps to 100% trying to see 7 motor amps.
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