Vestil EPT-30 - Manual (Page 22)

22
Curtis PMC 1207/1207A Manual 15
2 — INSTALLATION & WIRING: 1207 Controller
0–5k
Ω Throttle (“Type 3”)
The 0–5k
Ω throttle (“Type 3” in the programming menu) is a 2-wire resistive
throttle that connects between the 5k
Ω–0/0–5kΩ pin (Pin 8) and the Pot Low
pin (Pin 7), as shown in Figure 11. It doesn’t matter which wire goes on which
pin. For Type 3 throttles, zero speed corresponds to 0
Ω and full speed corre-
sponds to 5k
Ω.
Fig. 11 Wiring for 0–5
Ω
throttle (“Type 3”).
8 7 6 5 4 3 2 1
FASTER
16 15 14 13 12 11 10 9
5k Ω POT
Pin 8
Pin 7 5k Ω–0
Pot Low
PIN KEY (1207)
Broken wire protection is provided by the controller sensing the current flow
from the 0–5k
Ω input through the pot and into the Pot Low pin. If the Pot Low
input current falls below 0.1 mA, a throttle fault is generated and the controller
shuts down.
NOTE
: The Pot Low pin (Pin 7) must not be tied to ground.
WIRING: Emergency Reverse Check
An optional wire connected directly to the emergency reverse (belly button)
switch provides for broken wire detection when that option is enabled at the
factory. The emergency reverse check output wire periodically pulses the emer-
gency reverse circuit to check for continuity. If there is no continuity in the
circuit, the controller shuts down and a fault code is indicated.
This feature must be enabled at Curtis PMC. If the option is selected and the
check wire is not connected, the vehicle will not operate. If the option is not
selected and the check wire is connected, no harm will occur—but continuity will
not be checked.
The emergency reverse check output wire is connected to Pin 10, as shown
by the dashed lines in the two basic wiring diagrams (Figures 3 and 4).