How do I adjust the response time of my Hardy controller?

To modify the response time on your Hardy unit, you can adjust the "Averages" and/or "WAVERSAVER®" settings. Averages and WAVERSAVER® are not the same, but both will affect the final weight reading response time. In the HI4000 and HI6000 line the low pass filter ON or OFF will increase speed with the low pass filter off and increase filtering if it is ON.

WAVERSAVER™ is a program designed by Hardy Instruments to ignore in-plant vibration that causes fluctuations in weight readings. WAVERSAVER® enables your Hardy weight controller to distinguish between actual weight data and mechanical noise, both of which are typically transferred to the weight controller by the load cell signal. WAVERSAVER® can be configured from the front panel to ignore noise with frequencies as low as 0.25 Hz. Higher cut off frequencies may be selected to provide a faster instrument response time.

The WAVERSAVER® program is independent of the update rate (Averaging). The HI 2151/30WC is rated at 20 updates per second. That is the number of weight readings that are available for communications every second, whether the weight has changed or not. This would be once every 50 ms. The HI 3000 and 6300 series instruments (which includes the HI 6300, HI 6310, HI 3010, HI 3030, and the HI 3300) have 55 updates per second and make communications updates available every 18.18ms. T
he HI 4050, 6500, HI 6600 have 110 updates per second or 9 ms.

To determine which WAVERSAVER® setting is right for your application you need to keep in mind that the lower the vibration your scale is exposed to, the higher the minimal weighing time should be. Use WAVERSAVER® settings 1-3 to reduce the effects of low amplitude high frequency vibrations. Use WAVERSAVER® settings 3-5 to reduce the effects of high amplitude low frequency vibrations.

The timing on the WAVERSAVER® calculations are as follows:
1. 7.5hz = 60 msec
2. 3.5hz = 140 msec
3. 1hz = 500 msec
4. 0.5hz = 1.25 seconds
5. 0.25hz = 2.5 seconds

You can turn off WAVERSAVER® in the following models: HI 1769WS, HI6300, HI 6500, HI 6600, HI 3000 series (which includes the HI 3010, HI 3030, HI 3300 and the HI 3600), HI 4000 series (which includes the HI 4050 and HI 4060), and the HI 200DNWM DeviceNet module.  The HI6300 (7.5hz, 3.5hz, 1.0hz) and the HI4060 (15hz, 1hz, and 0.5hz) have only three WAVERSAVER® setting.  HI 4060+ has all five settings.

For the total time to reach a final weight reading, Averages/updates must be added to these times.  It does not actually add directly, but does affect the overall time.  One average is one update and varies from model to model. The WAVERSAVER® duration is the same only averages will change the final weight reading.

The number of averages is how many readings your Hardy controller averages together to get a displayed weight. The higher the number of averages, the slower the update of the front display reading. Averaging is used to ignore the impact of product moving on and off the scale. The update time for most Hardy models is:

HI 2151/20WC = 50msec
HI 2151/30WC = 50msec
HI 2160RC = 50msec
HI 6300 = 18msec
HI 3010 = 18msec
HI 3030 = 18msec
HI 3300 = 18msec
HI 3600 = 18msec
HI 4050 = 9msec (New WS card = 4 msec)
HI 6500 = 9msec
HI 6600 = 9msec
HI 4060 = 66msec (New WS card = 4 msec)
HI 1746WS = 50msec
HI 1756WS -2WS = 20msec
HI 1756FC = 20msec
HI 1769WS  -2WS= 10msec
HI 1769FC = 10msec
HI 1771WS = 50msec
HI 200DNWM = 10msec or 100msec, depending on the WAVERSAVER® setting.

WAVERSAVER® is designed to eliminate system vibration and averages is used to eliminate the effects of product impact on and off the scale. You should reduce the Avera