Vestil EPT-30 User Manual
Page 34
34
Curtis PMC 1207/1207A Manual
27
2
A
— INSTALLATION & WIRING: 1207A Controller
(b)
Ground-referenced
0–5V throttle
(a)
0–5V throttle sensor
Fig. 7
A
Wiring for 0–5V
throttle (“Type 2”).
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
16
15
14
13
12
11
10
9
+
-
+
B-
16
15
14
13
12
11
10
9
4.7 k
Ω
(Shunt impedance 150 k
Ω to ground)
Pin 7
Pin 6
Pin 5
Pot Low
0–5V Input
Pot High
PIN KEY (1207A)
Pin 7
Pin 6
Pot Low
0–5V Input
PIN KEY (1207A)
SENSOR GROUND
SENSOR OUTPUT
0–5V
SENSOR
between Pins 7 and 8, which increases the controller output. The throttle
mechanism must provide signals to the controller’s forward and reverse inputs
independent of the throttle pot resistance. The controller will not sense direction
from the pot resistance.
0–5V, 3-Wire Potentiometer, and Electronic Throttles (“Type 2”)
With these throttles (“Type 2” in the programming menu), the controller looks
for a voltage signal at the pot wiper/0–5V input of the controller (Pin 6). Zero
speed corresponds to 0V and full speed corresponds to 5V. Pot Low is the current
return path for all Type 2 throttles.
0–5V Throttle
Two ways of wiring the 0–5V throttle are shown in Figure 7
A
. If a throttle sensor
is used, the sensor’s ground return current must be less than 10 mA. If the 0–5V
throttle input (Pin 6) exceeds 8 volts, the controller will shut down.