Curtis 1244-64 series User Manual

10
Curtis 1244 Manual, Rev. E
2 — INSTALLATION & WIRING: Throttle
WIRING: Throttle
Various throttles can be used with the 1244 controller. ey are categorized
as one of five types in the programming menu of the handheld programmer.
Type 1: two-wire 5kΩ–0 throttles
Type 2: 0–5V throttles, current source throttles, three-wire potentiometer
throttles, and electronic throttles—wired for single-ended operation
Type 3: two-wire 0–5kΩ throttles
Type 4: 0–5V and three-wire potentiometer throttles—wired for wig-
wag-style operation
Type 5: CAN-Nodes throttles
e operating specifications for these throttle types are summarized in Table 1.
All throttle fault protection is accomplished by monitoring the wiper input.
is provides throttle fault protection that meets all EEC requirements. us,
no additional fault protection is required on any throttle type used with the
1244 controller.
Table 1 THROTTLE WIPER INPUT: THRESHOLD VALUES
MINIMUM THROTTLE HPD THROTTLE MAXIMUM
THROTTLE THROTTLE DEADBAND (25% throttle MAX THROTTLE
TYPE PARAMETER FAULT (0% throttle) active range) (100% modulation) FAULT
1 Wiper Voltage 0.1 V 3.3 V 1.0 V 0.2 V 4.4 V
Wiper Resistance — 5.0 kΩ 3.8 kΩ 0 kΩ 7.5 kΩ
2 Wiper Voltage (none) 0.2 V 1.4 V 5.0 V 5.5 V
Wiper Resistance — — — — —
3 Wiper Voltage 0.1 V 0.2 V 1.0 V 3.3 V 4.4 V
Wiper Resistance — 0 kΩ 1.3 kΩ 5.0 kΩ 7.5 kΩ
4 Wiper Voltage 0.5 V 2.5 V (fwd)* 3.1 V (fwd) 4.4 V (fwd) 4.5 V
2.5 V (rev)* 1.9 V (rev) 0.6 V (rev)
Wiper Resistance 0.5 kΩ 2.5 kΩ (fwd)* 3.1 kΩ (fwd) 4.4 kΩ (fwd) 4.5 kΩ
2.5 kΩ (rev)* 1.9 kΩ (rev) 0.6 kΩ (rev)
5 Wiper Voltage N/A N/A N/A N/A N/A
Wiper Resistance N/A N/A N/A N/A N/A
Notes: The Upper and Lower Deadbands 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
values will change with variations in the Throttle Deadband and Throttle Max parameter settings—see
Section 3, pages 30 and 32.
The HPD threshold is a percentage of the active throttle range, which is dependent on the pro-
grammed Throttle Deadband and Throttle Max settings. The default HPD Threshold is 25%; the
programmable range is 0–25%.
* With 0% Throttle Deadband, there is no neutral point on a Type 4 throttle. It is recommended that
an 8% minimum deadband be used with Type 4 throttles.

Curtis 1244-64 series Specifications

General

Brand	Curtis
Model	1244-64 series
Category	Controller
Language	English