When used properly, SAS increases productivity, period. SAS is not an idiot-proofer. It will not allow you to use the machine outside of its operational limits.
Whenever you set up the SAS system, you have to allow the computer to record "Tare Weight" so that the pressure transducer knows how much the carriage weighs empty. It calculates the operational limits (threshold value) based on this tare weight. This means, If you decide to remove the forks and install a craneboom, you have to re-calibrate the SAS. This can be done with a simple procedure that does not require a handset or any special tools. As long as you remain within the capacity limits and the derate limits of the attachment based on the load centre of gravity, SAS will limit loaded forward tilt angle to safe operational limits. SAS controls the mast by slowing-down rearward tilt speed to ONE VALUE, and controls forward loaded tilt angle to ONE VALUE if the load on the forks exceeds 60% of rated capacity. It does not calculate and infinitely vary the forward loaded tilt angle or backward tilt speed based on load, it has one threshold pressure at which it engages the fixed mast controls.
For this reason, the attachment weight cannot be too close to this threshold value. Listed attachment weight limits for the 7 series truck are as follows:
At 157.5" or less max lift height, 3.5 ton: 3087lbs, 4-5 ton: 3308lbs.
At 169-197" max lift height, 3.5 ton: 2205lbs, 4-5 ton: 3308lbs.
At 216.5-256" max lift height, 3.5 ton: 2205lbs, 4 ton: 2646lbs, 4.5-5 ton: 3308lbs.