Exercise machine safety enhancements

An exercise machine, comprising:

• a frame mountable on a wall;
• a tension generating device coupled to the frame;
• at least one sensor monitoring the tension generating device, wherein the at least one sensor includes an accelerometer configured to determine an acceleration of the frame;
• and
• a safety controller coupled to the tension generating device and the at least one sensor, wherein the safety controller is operable to:
• collect a sensor data from the at least one sensor;
• analyze the sensor data to determine whether the sensor data is within at least one specification;
• and
• in the event the sensor data is not within the at least one specification, entering an error stop mode for the tension generating device;
• wherein the analyzing the sensor data to determine whether the sensor data is within the at least one specification comprises:
• determining, using the accelerometer, whether the acceleration of the frame is equal to or exceeds a threshold;
• and
• in response to the determining that the acceleration of the frame is equal to or exceeds the threshold, determining that the sensor data is not within a respective one of the at least one specification.