Curtis 1239E - Page 53

Return to TOC Curtis 1239E-1269E Manual, os 37.0 RevA – May 2021
4 — PROGRAMMABLE PARAMETERS
pg. 49
THROTTLE MENU
PARAMETER ALLOWABLE RANGE DESCRIPTION
Throttle Type
Throttle_Type
0x3000 0x00
1 – 5
1 – 5
[PCF]
These E and SE controllers accept a variety of throttle inputs. The throttle type
parameter can be programmed as follows:
1. 2-wire rheostat, 5kΩ–0 input
2. single-ended 3-wire 1kΩ–10kΩ potentiometer, or 0–5V voltage source
3. 2-wire rheostat, 0–5kΩ input
4. wigwag 3-wire 1kΩ–10kΩ potentiometer, or 0–5V voltage source
5. VCL input (VCL_Throttle)
NOTE: Do not change this parameter while the controller is powering the
motor. Any time this parameter is changed a Parameter Change Fault (fault
code 49) is set and must be cleared by cycling power; this protects the
controller and the operator.
Forward Deadband
Forward_Deadband
0x3001 0x00
0.00 – 5.00 V
0 – 32767
Denes the wiper voltage at the throttle deadband threshold. Increasing the
throttle deadband setting will increase the neutral range. This parameter
is especially useful with throttle assemblies that do not reliably return to a
well-dened neutral point, because it allows the deadband to be dened
wide enough to ensure that the controller goes into neutral when the throttle
mechanism is released.
Forward Map
Forward_Map
0x3002 0x00
0 – 100%
0 – 32767
Modies the vehicle’s response to the throttle input. Setting the throttle map
at 50% provides a linear output response to throttle position. Values below
50% reduce the controller output at low throttle settings, providing enhanced
slow speed maneuverability. Values above 50% give the vehicle a faster, more
responsive feel at low throttle settings.
The map value is the percentage of controller output at half throttle
[(deadband + max)/2].
Forward Max
Forward_Max
0x3003 0x00
0.00 – 5.00 V
0 – 32767
Denes the wiper voltage required to produce 100% controller output.
Decreasing the throttle max setting reduces the wiper voltage and therefore
the full stroke necessary to produce full controller output. This parameter
allows reduced-range throttle assemblies to be accommodated.
Forward Offset
Forward_Offset
0x3004 0x00
0 – 100%
0 – 32767
Denes the initial controller output generated when the throttle is rst rotated
out of the neutral deadband. For most vehicles, a setting of 0 is appropriate.
For heavy vehicles, however, increasing the offset may improve controllability
by reducing the amount of throttle required to start the vehicle moving.
Reverse Deadband
Reverse_Deadband
0x3005 0x00
0.00 – 5.00 V
0 – 32767
The four Throttle Reverse parameters are the same as their Throttle Forward
counterparts, and apply when the throttle direction is reversed.
Reverse Map
Reverse_Map
0x3006 0x00
0 – 100%
0 – 32767
Reverse Max
Reverse_Max
0x3007 0x00
0.00 – 5.00 V
0 – 32767
Reverse Offset
Reverse_Offset
0x3008 0x00
0 – 100%
0 – 32767
Throttle Filter
Throttle_Filter
0x3030 0x00
0.5 – 125.0 Hz
131 – 32767
Sets the low pass lter cutoff frequency for the throttle pot wiper input. Higher
values will make the throttle more responsive to quick changes. Lower values
will make the throttle less responsive to electrical noise.
NOTE: All four throttle adjustment parameters — Deadband, Map, Max, Offset — condition the raw throttle voltage into a single % throttle command,
as shown in Figure 17 on previous page.