LEESON PWM DC Control: 174299 - Manual (Page 12)

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174298.00 and 174299.00 drives are pre-mounted on a heat sink. For optimum heat transfer, mount
the drive with heat sink fins standing vertically.
Heat Sinking
Motor
Leeson drives supply motor voltage from A1 and A2 terminals. It is assumed throughout this manual
that, when A1 is positive with respect to A2, the motor will rotate clockwise (CW) while looking at the
output shaft protruding from the front of the motor. If this is opposite of the desired rotation, simply
reverse the wiring of A1 and A2, or close the direction terminals on TB501.
Connect a DC motor to terminals A1 and A2 as shown in Figure 6. Ensure that the motor voltage rat-
ing is consistent with the drive’s output voltage.
Power Input
Connections
m
WARNING
Do not initially connect this equipment with power applied. Failure to heed this directive
may result in damage or serious injury.
Leeson strongly recommends the installation of a master power switch in the voltage input
line, as shown in Figure 6. The switch contacts should be rated at a minimum of 150-200% of
motor nameplate current and 150% of the input voltage.
m
WARNING
This drive is not diode-protected from reverse battery voltage. You must assure that POS (+)
is wired to BAT+ and NEG (-) is wired to BAT-.
Connect the DC power leads to terminals BAT+ and BAT-, or to a single-throw, single-pole master
power switch as shown in Figure 6 (recommended).