Curtis 1243
GEN
2 Manual
9
2 — INSTALLATION & WIRING:
Throttle
WIRING: Throttle
Wiring for various throttles is described below. They are categorized as Type 1,
2, 3, and 4 throttles in the program menu of the handheld programmer. Note:
In the text, throttles are identi
fi
ed by their nominal range and not by their actual
active range.
Appropriate throttles for use with the 1243
GEN
2 controller include two-
wire 5k
Ω
–
0 throttles (
“
Type 1
”
); 0
–
5V throttles, current source throttles,
three-wire potentiometer throttles, and electronic throttles wired for single-
ended operation (all
“
Type 2
”
); two-wire 0
–
5k
Ω
throttles (
“
Type 3
”
), and
0
–
5V and three-wire potentiometer throttles wired for wigwag operation
(
“
Type 4
”
). The operating speci
fi
cations for these throttle types are summarized
in Table 1. Refer to Section 3: Programmable Parameters, for information on
the effects of the Throttle Deadband and Throttle Max parameters on the
minimum and maximum throttle thresholds.
If the throttle you are planning to use is not covered, contact the Curtis
of
fi
ce nearest you.
Table 1
THROTTLE WIPER INPUT THRESHOLD VALUES
MAXIMUM
THROTTLE
HPD
THROTTLE
MINIMUM
THROTTLE
THROTTLE
DEADBAND
(25% throttle
MAX
THROTTLE
TYPE
PARAMETER
FAULT
(0% speed request)
active range)
(100% modulation)
FAULT
1
(5k
Ω
–0)
Wiper Voltage
5.00 V
3.80 V
2.70 V
0.20 V
0.06 V
Wiper Resistance
7.50 k
Ω
5.50 k
Ω
3.85 k
Ω
0 k
Ω
—
2
(0–5V)
Wiper Voltage
0.06 V
0.20 V
1.50 V
5.00 V
5.80 V
Wiper Resistance
—
—
—
—
—
3
(0–5k
Ω
)
Wiper Voltage
0.06 V
0.20 V
1.30 V
3.80 V
5.00 V
Wiper Resistance
—
0 k
Ω
1.65 k
Ω
5.50 k
Ω
7.50 k
Ω
4
(0–5V)
Wiper Voltage
0.50 V
2.50 V (fwd)
*
3.10 V (fwd)
4.40 V (fwd)
4.50 V
2.50 V (rev)
*
1.90 V (rev)
0.60 V (rev)
Wiper Resistance
—
—
—
—
—
Notes: The Throttle Deadband and Throttle Max thresholds are valid for nominal 5k
Ω
potentiometers or 5V sources with the default Throttle Deadband and Throttle
Max parameter settings of 0% and 100% respectively. These threshold values
will change with variations in the Throttle Deadband and Throttle Max param-
eter settings
.
The HPD thresholds are 25% of the active throttle range and therefore
dependent on the programmed Throttle Deadband and Throttle Max settings
(which define the active range).
The wiper voltage is measured with respect to B-.
The wiper resistance is measured from pot low to pot wiper. The potentiometer
must be disconnected from the controller when making this measurement.
*
With a 0% Throttle Deadband setting, there is no neutral point on
a Type 4 throttle. A Throttle Deadband setting of at least 8% is
recommended for Type 4 throttles.
