Curtis 1253 - Throttle Deadband; Fig. 8 Effect of Adjusting the Throttle Deadband Parameter; Table 2: Programmable Throttle Input Signal Types

Curtis 1253 Manual, Rev. F
17
Blue Ox Rev. A, draft #1 [3 August 2007]
listed in Table 2. Wiring information and performance characteristics for each
type are presented in Section 2.
If no throttle is used in the application, the throttle fault parameter (see
page 25) should be programmed O; otherwise the controller will register a
throttle fault.
Table 2 PROGRAMMABLE THROTTLE INPUT SIGNAL TYPES
THROTTLE
TYPE DESCRIPTION
0 0–5kΩ, 2-wire rheostat
1 5kΩ–0, 2-wire rheostat
2 single-ended 0–5V input)
3 single-ended 3-wire potentiometer (1kΩ to 10kΩ range)
THRTL DEADBAND
e rottle Deadband parameter defines the pot wiper voltage range the
controller interprets as neutral. Increasing the throttle deadband setting increases
the neutral range. is parameter is especially useful with throttle assemblies
that do not reliably return to a well-defined neutral point, because it allows the
3 — PROGRAMMABLE PARAMETERS: Throttle Parameters
Notes: Voltages shown are at the pot wiper relative to B-.
For Types 0 and 1, the deadband points are defined in
terms of the nominal 5kΩ pot resistance. Using a pot
of greater or lesser resistance will give different values
for the deadband points.
Throttle Max parameter set at 100%.
0.5V
1.5V
5V
0
4.5V
(5.0kΩ)
30%
Deadband
10%
Deadband
0%
Deadband
4.1V
(4.5kΩ)
3.3V
(3.5kΩ)
0.6V
(0Ω)
0.6V
(0Ω)
0.6V
(0Ω)
KEY
100%
Neutral
Deadband
Controller
Output
0%
5V
0
30% Deadband
10% Deadband
0% Deadband
5V
0
30% Deadband
10% Deadband
0% Deadband
1.0V
(500Ω)
1.8V
(1.5kΩ)
4.5V
(5.0kΩ)
4.5V
(5.0kΩ)
4.5V
(5.0kΩ)
5V
0
30%
Deadband
10%
Deadband
0%
Deadband
5V
0
30%
Deadband
10%
Deadband
0%
Deadband
Throttle Types 2 and 3 (0–5V and 3-wire pot)
Throttle Type 1 (5k
Ω–0)
Throttle Type 0 (0–5k
Ω)
0.6V
(0Ω)
Fig. 8 Eect of adjusting
the throttle deadband
parameter (throttle types 0
and 1).