LEESON NEMA 4X SCR Control: 174107.00 - Manual (Page 27)

21 SPEEDMASTER™ OPERATION MANUAL
Inhibit circuit
Maintaining a connection between the inhibit pins (Figure 7,
page 22) 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.
LEESON offers an accessory plug harness for connecting to the
INHIBIT terminals: part number 900282.01 [inhibit plug with 18
inches (46 cm) leads].
Twist inhibit wires and separate them from other power-carrying
wires or sources of electrical noise. Use shielded cable if the
inhibit wires are longer than 18 inches (46 cm). If shielded cable
is used, ground only one end of the shield to earth ground. Do
not ground both ends of the shield.
Warning
Decelerating to minimum speed, inhibit operation, or
coasting to a stop is recommended for frequent starts and
stops. Do not use any of these methods for emergency
stopping. They may not stop a drive that is malfunctioning.
Removing AC line power (both L1 and L2) is the only
acceptable method for emergency stopping.
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Application Notes