Manual

Curtis 1243GEN2 Manual, Rev. B
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 identified by their nominal range and not by their
actual active range.
Appropriate throttles for use with the 1243GEN2 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 specifications 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
office 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 (5kΩ–0) Wiper Voltage 5.00 V 3.80 V 2.70 V 0.20 V 0.06 V
Wiper Resistance 7.50 kΩ 5.50 kΩ 3.85 kΩ 0 kΩ —
2 (0–5V) Wiper Voltage 0.06 V 0.20 V 1.50 V 5.00 V 5.80 V
Wiper Resistance — — — — —
3 (0–5kΩ) Wiper Voltage 0.06 V 0.20 V 1.30 V 3.80 V 5.00 V
Wiper Resistance — 0 kΩ 1.65 kΩ 5.50 kΩ 7.50 kΩ
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 5kΩ
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 parameter
settings.
The HPD thresholds are 25% of the active throttle range and therefore depen
-
dent 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.