LEESON SCR Thyristor Motor Control - Manual (Page 37)

31 Operation SPEEDMASTER™ OPERATION MANUAL
Inhibit circuit
Maintaining a connection between the inhibit pins causes the
motor to coast to minimum speed. Removing the connection
between the inhibit pins allows the motor to accelerate to the
speed set by the speed adjust potentiometer (Figure 15).
INHIBIT
PINS
SO501 RUN
COAST TO
MINIMUM SPEED
Figure 15. Inhibit Plug with Run/Coast to
Minimum Speed Switch