CALIBRATION
24
6.2.5 Overload Alarm Setup
Cal 1 - Channel 6 : The default setting is 0000 Hz (Alarm Off).
If the load sensor frequency input exceeds the value set on this channel, an
audible alarm is triggered and the display flashes.
Calculate the threshold frequency as follows,
Threshold Hz = Hz for empty lift + (Alarm load (kg) x Cal Factor)
Example: Empty lift = 3100Hz (noted when doing the weight calibration
routine - ref. 6.2.4)
Cal Factor = 1.000
Alarm Load = 2000kg
Threshold Hz = 3100 + (2000 x 1.000) = 5100Hz
Programme the appropriate figure in the normal way (ref. 6.1)
Return to the normal operating mode and check the operation of the alarm. It
may be necessary to adjust the threshold setting if the alarm sounds at the
wrong load.
NOTE: The required setting is essentially achieved through trial and error. A typical
accuracy in the order of ±10% should be expected for the load alarm function.
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