Curtis 1253 - Fig. 4: Wiring for 2-Wire 5 Kω-0 Potentiometer (Type 0); Fig. 5: Wiring for 2-Wire 0-5 Kω Potentiometer (Type 1)

12
Curtis 1253 Manual, Rev. F
0–5k Ω Throttle (“Type 0”)
e 0–5kΩ throttle (“Type 0” in the Program Menu) is a 2-wire resistive throttle
that connects between the Pot Wiper and Pot Low pins, as shown in Figure 4.
Zero speed corresponds to 0Ω measured between the two pins and full speed
corresponds to 5 kΩ.
2 — INSTALLATION & WIRING: Throttles
Fig. 4 Wiring for
0–5k Ω throttle (“Type 0”).
If the total resistance between the Pot Wiper and Pot Low pins is greater
than 7.5 kΩ, the controller’s upper fault limit will be exceeded (see Table 1) and
the throttle’s input value will be zeroed. is provides broken wire protection,
and also serves as an indication that the potentiometer’s resistance has increased
beyond the acceptable range and that the pot therefore needs to be replaced.
5k Ω –0 Throttle (“Type 1”)
e 5kΩ–0 throttle (“Type 1” in the Program Menu) is a 2-wire resistive throttle
that connects between the Pot Wiper and Pot Low pins, as shown in Figure 5.
Zero speed corresponds to a nominal 5kΩ measured between the two pins and
full speed corresponds to 0Ω.
If the total resistance between the Pot Wiper and Pot Low pins is greater
than 7.5 kΩ, the controller’s upper fault limit will be exceeded (see Table 1) and
the throttle’s input value will be zeroed. is provides broken wire protection,
and also serves as an indication that the potentiometer’s resistance has increased
beyond the acceptable range and that the pot therefore needs to be replaced.
Fig. 5 Wiring for 5k Ω –0
throttle (“Type 1”).
5kΩ–0
Pot Low input (Pin J1-4)
Pot Wiper input (Pin J1-3)
FASTER
0–5k
Ω
Pot Low input (Pin J1-4)
Pot Wiper input (Pin J1-3)
FASTER