7310 fault in ABB DCS880 drive indicates Overspeed condition. This means the motor is turning faster than highest allowed speed due to incorrectly set minimum/maximum speed, insufficient braking torque or changes in load when in torque control.

1. Check the settings of 30.11 M1 minimum speed, 30.12 M1 maximum speed and 31.30 M1 overspeed trip margin.
2. Check the settings of the speed controller in group 25 Speed control.
3. Check the setting of 46.02 M1 speed scaling actual.
4. Check the torque control settings.
5. For correct speed feedback when using an encoder or a tacho. Thus, compare the value of 90.01 Motor speed for control vs. the measured motor speed (hand held tacho).