PG DRIVES TECHNOLOGY I-DRIVE TECHNICAL MANUAL – PROGRAMMING
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
This parameter sets the behavior of the controller when it is switched on with the throttle already deflected. There are three
options:
Drive The i-Drive will drive if it is switched on while the throttle is already deflected.
Inhibit The i-Drive will not drive if it is switched on while the throttle is already deflected but once the throttle
has been returned to its home position it will then allow the machine to drive.
Trip The i-Drive will not drive if it is switched on while the throttle is already deflected, it will record a trip in
the system log and it will require the machine to be switched off and on again.
Setting this parameter to Drive may contravene some international vehicle safety legislation. If,
under exceptional circumstances, the condition set by Drive is required, it becomes the sole
responsibility of the machine manufacturer. PGDT accepts no liability for losses of any kind
resulting from this parameter being set to Drive.
4.5 Throttle Reference Test
This parameter sets whether the controller checks for the presence of the high and low throttle references.
The parameter can be set to On or Off.
If set to Off, all throttle reference checks are disabled to allow the use of a voltage source input.
If set to On, the controller will check the high and low throttle references.
4.6 ISO Tests Resistor
This parameter can be set to On or Off.
If the machine has no ISO-Test resistor fitted (
refer to Chapter 2) the parameter must be set to Off.
If the machine already has an ISO-Test resistor fitted, then to ensure the machine can reach maximum speed, the parameter
should be set to On.
If an ISO-Test resistor is fitted and a series connected speed limiting potentiometer is used, then
depending on the setting of the potentiometer, it may not be possible to detect a short-circuit
between the throttle side of the potentiometer and either of the throttle references.
SK76977-07 69
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