Can I adjust the response time on my HI 1746WS?

My HI 1746WS takes a long time for the display to show the weight reading and the Motion bit signal takes a long time to toggle off. Can I adjust the response time to make a weight measurement in less time?

The motion tolerance flag is hard-coded to take 1 second. It compares the current weight reading to the weight reading taken 1 second prior. The program then checks if the weight has changed, in that one second, more than the motion tolerance setting. If it has changed more than the motion tolerance, then the motion bit is ON. If it has changed less than the motion tolerance, the motion bit is OFF.

It is important to set the motion tolerance correctly. Too large and the unit is always out of motion, too small and it may take too long to come out of motion or never come out of motion. The motion bit indicating on or off does not have an effect on the response time, but if on, will prevent the Tare, Zero, and Calibration commands from passing.

To set the motion tolerance divide the total scale capacity (capacity of all load cells summed together) by 10,000 and multiply by 3. This is the correct default starting setting for the motion tolerance. As an example, if your scale has four 25kg load cells, then your total capacity is 100kg, then 100,000g/10,000 X 3 = 30 g or 30. You may adjust this slightly up or down as needed for your system. 

One setting that will affect your response time is the average setting. Usually a setting of 10 will give a response time of 500ms. Each average equals one update and each update is 50 ms.

The other setting that can affect your response time is WAVERSAVER®. The timing on the WAVERSAVER calculations are as follows:
7.5hz = 60 ms
3.5hz = 140 ms
1hz = 500 ms
0.5hz = 1.25 seconds
0.25hz = 2.5 seconds

If these two settings are not correct you can get a very slow response time.

You want to make sure your WAVERSAVER® setting is as low as possible for your vibration elimination, your averages setting is as low as possible for stability of the system.  Adjusting these settings will change your response time.  Adjustments of the Motion Tolerance will give you the indication when the scale reading is stable.

The amount of scale "bounce" can also affect how fast the scale weight settles. If you drop a weight onto your scale there will be a delay as the scale physically settles or responds. The only way to minimize this would be to change the method of getting the weight onto the scale. The smoother it moves onto the scale, the less the scale bounce settle time.

The other consideration would be the configuration settings or scan time of your SLC system.  If the weight is being sent to a display (HMI), this programming may be causing a delay as well.  This would require the SLC programmger to evaluate the programming as this would not be due to the Hardy module.