Curtis PMC 1297 Manual
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range. These four parameters, together with the throttle map, determine the
controller’s output response to throttle demand.
The throttle map parameter is tuned as part of the vehicle performance
adjustment process (Section 5).
POT LOW CHECK
The
pot low check
feature checks the voltage at the wiper input (J1 Pin 4) and
faults the controller if this voltage drops below 0.06 V. The pot low check
parameter can be enabled (programmed On) or disabled (programmed Off ).
Disabling the pot low check feature is useful when single-wire, ground (B-)
referenced voltage throttle inputs are used. It is recommended that the pot low
check parameter be set to On in any application where a resistive throttle is used.
This will provide maximum throttle fault detection and provide the safest
possible vehicle operation.
Fig. 18
Influence of
various parameters on
controller output response
to throttle demand.
TRACTION THROTTLE INPUT (percent of active range)
CONTROLLER OUTPUT
(percent PW
M)
100
90
80
70
60
50
40
30
20
10
0
SPEED PARAMETERS
10%
Creep Speed
80%
Max Speed
THROTTLE
PARAMETERS
15%
Deadband
90%
Throttle Max
40%
Throttle Map
80% Max Speed
40% Throttle Map
(38% output at half throttle)
10% Creep Speed
15% Throttle Deadband
90% Throttle Max
HALF
THROTTLE
100
90
80
70
60
50
40
30
20
10
0
3
A
— PROGRAMMABLE TRACTION PARAMETERS: Throttle
