Table of Contents
Advertisement
2 — INSTALLATION & WIRING
Fig. 5
Wiring for
5k Ω –0 throttle
("Type 1").
Fig. 6
Wiring for 20k Ω
potentiometer used as a
wigwag-style throttle
("Type 1").
10
WIRING: Throttle
Wiring for various throttles is described below. They are characterized as Type 1,
Type 2, and Type 3 throttles in the programming menu of the handheld pro-
grammer. Note: In the text, throttles are identified by their nominal range
and not by their actual active range.
If the throttle you are planning to use is not covered, please contact the
Curtis office nearest you.
5kΩ–0 Throttle ("Type 1")
The 5kΩ–0 throttle (called a "Type 1" throttle in the programming menu of
the handheld programmer) is a 2-wire resistive throttle that connects between
the 5kΩ–0/0–5kΩ pin (Pin 8) and the Pot Low pin (Pin 7), as shown in Fig-
ure 5. It doesn't matter which wire goes on which pin. Zero speed corresponds
to 5kΩ and full speed corresponds to 0Ω.
5kΩ POT
FASTER
In addition to accommodating the basic 5kΩ–0 throttle, the Type 1
throttle is the easiest with which to implement a wigwag-style throttle. Using
a 20kΩ potentiometer wired as shown in Figure 6, the pot wiper can be set
such that the controller has 5kΩ between Pins 7 and 8 when the throttle is
in the neutral position (i.e., at the center of the pot). The throttle mechanism
can then be designed such that rotating it either forward or back decreases the
resistance between Pins 7 and 8, which increases the controller output. The
20kΩ POT
FASTER
FASTER
16
15
14
13
12
11
8
7
6
5
4
3
PIN KEY
Pin 8
Pin 7
16
15
14
13
12
11
8
7
6
5
4
3
PIN KEY
Pin 8
Pin 7
Curtis 1207B Manual
10
9
2
1
5kΩ–0
Pot Low
10
9
2
1
5kΩ–0
Pot Low
Hide quick links:
Advertisement
Table of Contents
Troubleshooting
