PG DRIVES TECHNOLOGY S-DRIVE - PROGRAMMING
SK76745/10
The time can be adjusted in 1minute steps between 0 to 20 minutes.
If the value is set to 0, no power down will occur.
4 Throttle Parameters
4.1 Throttle Type
This parameter can be set to one of three modes.
Single-ended Stands for Single-ended Throttle type.
Wig-wag Stands for Wig-wag Throttle type.
Unipolar Stands for Unipolar Throttle type.
4.2 Throttle Deadband
This sets the amount of throttle potentiometer movement before the solenoid brake is disengaged and the scooter starts to drive.
It is expressed as a percentage of the potentiometer full forward/reverse movement.
The following two examples cover the cases of single-ended and wig-wag throttle types.
Example 1: For a single-ended throttle, if the throttle deadband is 10% and the potentiometer is 5kΩ, then there
will be no drive until the potentiometer wiper is at the 500Ω position.
Example 2: For a wig-wag throttle if the throttle deadband is 10% and the potentiometer is 5kΩ, then there will
be no drive when the potentiometer wiper is between the 2.25kΩ and 2.75kΩ positions.
This value is adjustable between 3 and 100% in steps of 1%, and should always be set greater than the mechanical repeatability
of the throttle mechanism.
4.3 Throttle Gain
This parameter amplifies the drive signal to the S-Drive, thus allowing throttle mechanism’s that do not employ the full electrical
angle of the throttle potentiometer to be used. The parameter can be set between 5% and 1250% in steps of 5%. A value of
100% means no amplification is applied.
Example 1: If a 5kΩ throttle potentiometer is being used in a wig-wag configuration and the mechanical
arrangement of the throttle means the potentiometer’s wiper reaches the high reference when the
throttle is fully deflected, the Throttle Gain should be set to 100%
Example 2: If a 5kΩ throttle potentiometer is being used in a wig-wag configuration and the mechanical
arrangement of the throttle means the potentiometer’s wiper reaches only 4kΩ when the throttle is
fully deflected, then Throttle Gain should be set as follows.
This example assumes a Throttle Deadband setting of 10%.
Full electrical angle = 5kΩ - 2.75kΩ = 2.25kΩ
Actual electrical angle = 4kΩ - 2.75kΩ = 1.25kΩ
Required gain = 2.25 / 1.25 = 1.8
Set Throttle Gain to = 180%
4.4 Throttle Operated At Power-up
The parameter sets the behavior of the controller when it is switched on with the throttle already deflected. There are three
options:
Drive The S-Drive will drive if it is switched on while the throttle is already deflected.
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