Great Plains V-300F Operator Manual - Manual (Page 73)

Great Plains Manufacturing, Inc. Monitor Operation 69
11/15/2007 148-057M-A
Seed Alarm Speed (Shaft Rate)
The default alarm threshold is 0 rpm (shaft stopped). If
you want an alarm at some low speed other than
stopped, change the threshold rpm as follows:
1. Channel Select to the Seed channel.
2. Press and hold the button to enter Program
Mode 1.
The threshold rpm displays after 3 seconds.
3. Continue holding the button and press to
select the digit to change.
Hold
to change the selected digit.
Release to select the next digit, and repeat as
above.
4. Release both buttons when done. The instrument
returns to the normal display mode.
Seed Alarm Delay Time
Some crops – notably oilseed rape (canola) are drilled at
very low rates, the seed shaft runs extremely slowly and
the instrument may incorrectly sense a stoppage.
Change the delay time to prevent nuisance alarms.
When drilling at higher rates, a long time delay is equally
undesirable. In this case program a shorter delay.
The default alarm delay is 040 seconds after the shaft
rpm drops below the threshold value (or to 0). The mini-
mum delay time is 005 seconds.
Change the delay time as follows:
1. Power-off the console using its rear panel switch.
2. While holding down the button, re-apply power
to enter Program Mode 2 “CAL.2”.
3. Press to select the Seed channel.
The threshold rpm displays after 3 seconds.
4. Press to select the digit to change.
Hold to change the selected digit.
Release to select the next digit, and repeat as
above.
5. Release all buttons. Switch off and restore power to
save the selection. The instrument resumes normal
mode at next power-on.
Figure 68
Seed Shaft Alarms at 0 rpm
22632
Figure 69
Seed Alarms at 10 Sec.
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