Curtis Instruments MultiMode 1243 Generation 2 - 0-5 K, 2-Wire Potentiometer Throttle (Type 3); Fig. 9 Wiring for Curtis ET-XXX Electronic Throttle (Type 2)

Curtis 1243GEN2 Manual
13
2 — INSTALLATION & WIRING: Throttle
Curtis ET-XXX Electronic Throttle
The Curtis ET-XXX provides a 0–5V throttle and forward/reverse inputs for the
1243GEN2 controller. Wiring for the ET-XXX is shown in Figure 9. When an
electronic throttle is used, the Pot Low Fault parameter (see Section 3, page 38)
must be set to Off; otherwise the controller will register a throttle fault and will
shut down.
There is no fault detection built into the ET-XXX, and the controller will
detect only open wiper faults. It is the responsibility of the vehicle manufacturer
to provide any additional throttle fault detection necessary.
The ET-XXX can be integrated into a control head to provide wigwag-
style throttle control. Alternatively, a complete control head assembly is avail-
able from Curtis. This control head assembly—the CH series—combines the
ET-XXX throttle with a variety of standard control head switch functions for
use in walkie and lift truck applications.
0–5kΩ Throttle (“Type 3”)
The 0–5kΩ throttle (“Type 3” in the programming menu) is a 2-wire resistive
throttle that connects between the Pot Wiper and Pot Low pins (Pins 6 and 7)
as shown in Figure 10. Zero speed corresponds to 0 Ω measured between the two
pins and full speed corresponds to 5 kΩ. This throttle type is not appropriate
for use in wigwag-style applications.
Broken wire protection is provided by the controller sensing the current
flow from the wiper input through the potentiometer and into the Pot Low pin.
If the Pot Low input current falls below 0.65 mA or its voltage below 0.06 V,
Fig. 9 Wiring for Curtis
ET-XXX electronic throttle
(“Type 2”).
GREEN
ORANGE
BLACK
BLACK/WHITE
WHITE
WHT/BRN
B+
KEYSWITCH
connector
WHT/GRN
Reverse input (Pin 11)
KSI (Pin 16)
0–5V input (Pin 6)
Forward input (Pin 12)
Pot Low Fault setting = OFF
☞
B-
B-