LEESON FHP Series NEMA 4x Variable Speed Drive - Manual (Page 47)

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Application Notes
Independent adjustable speeds with DIR switch
Replace the speed adjust potentiometer with two single-
pole multi-position switches, and two or more
potentiometers in parallel, with a total parallel resistance of
10K ohms. Figure 17 below shows the connection of two
independent speed adjust potentiometers that can be
mounted at two separate operating stations.
E2
E1
S1
S2
D (DIRECTION)
S3
FORWARD
REVERSE
TB501
REVERSE
SPEED
FORWARD
SPEED
20K OHM
20K OHM
Figure 17. Independent Adjustable Speeds