79
SP1B
SK73750/7
PG DRIVES TECHNOLOGY
14
Note: this function is not present on Solo controllers.
5.9 Bridge Hold ?
This function allows a length of time to be set such that voltage is held on the bridge
after the vehicle has come to rest. It is usually set to 200 ms and should not normally
require adjustment. Contact PGDT if you feel your application requires this setting to
be changed.
5.10 Throttle Gain ?
This parameter amplifies the drive signal to the controller, 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
below.
Full electrical angle = 5kΩ - 2.5kΩ = 2.5kΩ
Actual electrical angle = 4kΩ - 2.5kΩ = 1.5kΩ
Required gain = 2.5 / 1.5 = 1.67
Set Throttle Gain to = 167%
5.11 Pulse Rev. Alarm ?
The controller has an output to power an audible reversing alarm. This output can be
set to give a steady or a pulsing signal, the pulsing signal is approximately 1.25Hz.
You can set this function to on or off - on is pulsing, off is steady.
5.12 Wigwag Throttle ?
This programs the controller to operate with either a wig-wag (center off) or a single-
ended throttle configuration.
Wig-wag means the throttle potentiometer is used to control both speed and direction,
i.e. center is no drive, forward is away from center in one direction, reverse is away
from center in the opposite direction. Single-ended means the throttle potentiometer
controls speed only, direction selection is with a separate switch.
You can select yes or no for this setting - yes means wig-wag, no means single-
ended.
To Next Page
Loading...