micro-trak ProPlant, Reference Manual

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The value for Driven or Drive Sprocket refers to the number
of teeth on the sprocket.
To calculate Ratio for a single stage chain drive, use the
following equation:
(Driven Sprocket ÷ Drive Sprocket)
EXAMPLE: 32 ÷ 16 = 2.000
This means the Drive Sprocket will need to make 2 complete
revolutions in order for the Driven Sprocket to make 1
revolution.
To calculate Ratio for a two stage chain drive, use the
following equation:
(First Stage Driven Sprocket ÷ First Stage Drive Sprocket)
x (Second Stage Driven Sprocket ÷ Second Stage Drive
Sprocket)
EXAMPLE: (32÷ 16) x (28 ÷ 16) = 3.500
In the above example, the First Stage Drive Sprocket will
need to make 3.5 complete revolutions in order for the
Second Stage Driven Sprocket to make 1 revolution.
To calculate Ratio for a three stage chain drive; use the
following equation:
(First Stage Driven Sprocket ÷ First Stage Drive Sprocket)
x (Second Stage Driven Sprocket ÷ Second Stage Drive
Sprocket) x (Third Stage Driven Sprocket ÷ Third Stage Drive
Sprocket)
EXAMPLE: (32 ÷ 16) x (28 ÷ 16) x (24 ÷ 18) = 4.666
In the above example, the First Stage Drive Sprocket will
need to make 4.666 complete revolutions in order for the
Third Stage Driven Sprocket to make 1 revolution.
Enter your calculated Ratio in the Ratio setting of “Special
Cal”.
Calculating your Flow Cal for a Planter Drive
1. Rows equals the number of rows the drive is running.
ROWS = ______
2. How many seeds are dispensed per revolution of your
Seed Meter Disc?
SMD = ______
3. What is the Ratio of hydraulic motor revolutions to seed
meter revolutions?
RATIO = ______ to 1
4. How many teeth are there on your Motor Sensor
Sprocket?
MSS = _____
1000 Seeds ÷
ROWS = Seeds per Row
Seeds per Row ÷ SMD = Seed Meter Revolutions
Seed Meter Revolutions x RATIO = Motor Revolution
Motor Revolution x MSS = Pulses per 1000 Seeds (Flow Cal)
EXAMPLE:
ROWS
= 12
SMD = 30
RATIO = 4.0
MSS = 16
1000 Seeds ÷ 12 = 83.333
83.333 ÷ 30 = 2.777
2.777 x Ratio = 11.111
11.111 x 16 = 177.8
177.8 = Flow Cal or Pulses per 1000 Seeds.
FIRST STAGE DRIVEN
THIRD STAGE DRIVEN
THIRD STAGE DRIVE
SECOND STAGE DRIVEN
SECOND STAGE DRIVE
FIRST STAGE DRIVE
Installation
(cont)
Calculating Planter Drive Ratio