
STC Starting Torque Controller
1-3
Features
The STC controller is a compact device with feed through wiring for
ease of installation. To set up the controller, adjust the digital rotary
switches. The initial torque value is set between 10 and 80% of
locked rotor torque. The voltage ramp time is adjustable from 0.1 to
4.5 seconds. This flexible combination enables the STC controller to
be installed in a wide variety of applications.
Adjustments
Figure 1.5 STC Controller Adjustments
Table 1.A Initial Torque Level (Nominal)
Table 1.B
Voltage Ramp Time (Nominal)
(With Initial Torque Set At 0)
T1
2
T2
4
T3
6
Digital Rotary switches for easy adjustments
Position
0123456789
% of Locked
Rotor Torque
10 15 20 25 30 40 50 60 70 80
Position
0123456789
Time
(Seconds)
0.1 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
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