Field output, Tachogenerator feedback – LEESON Chassis Mount Regenerative Control: 175721.00 User Manual

Page 17

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Field output

The field output is for shunt wound motors only. Do not
make any connections to F1 and F2 when using a
permanent magnet motor.

Use 18 AWG wire to connect the field output to a shunt wound
motor. Table 1 lists the field output connections.

Table 1. Field Output Connections

Line Voltage

Approximate

Connect Motor

(VAC)

Field Voltage (VDC)

Field To

115

50

F1 and L1

115

100

F1 and F2

230

100

F1 and L1

230

200

F1 and F2

Tachogenerator feedback

Using tachogenerator feedback improves speed regulation from
approximately 1% of motor base speed to approximately 0.1%
of motor base speed. Use tachogenerators rated from 7 VDC
per 1000 RPM to 50 VDC per 1000 RPM. Connect the
tachogenerator to terminals T1 and T2 of terminal block TB502.
The polarity is positive (+) for T1 and negative (–) for T2 when
the motor is running in the forward direction. The polarity is
reversed when the motor is running in the reverse direction.

Installation

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