Operating The Ds9000 As A Follower Controller; How To Determine Your Ratio - Seco DS9000 Installation & Operation Manual

Parameters that can be adjusted are shown in one of the Parameter Sets below:
OPERATIONAL
PARAMETERS
SET-UP
PARAMETERS
TUNING
PARAMETERS
Parameters FEd1, SCF1, SCd1, and POSE are not displayed when operating the DS9000 as a Set-Point
controller. These parameters apply when using the DS9000 as a follower controller. Refer to Section
4.0 and 5.0 for information on these Parameters.
4.0

Operating the DS9000 as a Follower Controller

After the completion of the DS9000 preliminary setup instruction, as explained in Section 2.7, this
section will provide a detailed procedure to operate your DS9000 as a Follower Controller, operating
like an electronic gear-box, the Follower Motor will run at an exact ratio, programmable from 0.001
to 9.999, to the speed of a master motor or digital reference signal.
For a typical wiring diagram for the DS9000 connected as a Master and a Follower Controller, refer to
Fig. 4.1.
4.1

How to determine your ratio

The ratio entered is a multiplication factor that sets the exact scale factor of the master
reference to the follower drive. Up to four ratios can be programmed in parameters PS1, PS2,
PS3, or PS4. For simple applications where you are following a motor with a feedback device
of the same number of pulses per second as the follower motor, calculate your ratio as follows:
Speed of follower motor (RPM) = Ratio
Speed of master motor (RPM)
Example: 1800 RPM = 1.000
1800 RPM
900 RPM = 0.500 The follower will run at 50% of the speed of the master
1800 RPM
For applications where you are using a digital reference signal or a feedback device of a different
number of pulses per revolution use the following method.
PRESET SPEED 1
PRESET SPEED 2
PRESET SPEED 3
PRESET SPEED 4
MINIMUM SPEED
MAXIMUM SPEED
ACCELERATION TIME
DECELERATION TIME
FEEDBACK RESOLUTION (CONTROLLED MOTOR) – FEd0
SCALE FACTOR (CONTROLLED MOTOR) – SCF0
SCALE FACTOR DECIMAL POINT (CONTROLLED MOTOR) – SCd0
PROPORTIONAL ERROR GAIN (PE)
INTEGRAL ERROR GAIN (IE)
(PS1)
(PS2)
(PS3)
(PS4)
(LO)
(HI)
(ACE1)
(deC1)
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