Parker Products OEM650X - Manual (Page 39)

INSTALLATION • OEM650/OEM650X
32
Current (Amps)
Compumotor has assigned the values shown in Table 2-14 for OEM
Series motors to produce the highest possible torque, while main-
taining smoothness. Higher currents will produce higher static
torque; but, the motor will run roughly and may overheat. Do not
run the parallel rated current into a motor that is wired in series—it
will destroy the motor's windings.
Power Dump
This drive has built-in power dump circuitry to monitor power supply
surges caused by a regenerative load. The power dump circuit is
used in conjunction with an externally mounted power resistor. The
circuitry effectively closes a switch to ground when the power supply
voltage exceeds 85VDC. This switch terminal is at the screw termi-
nal labeled DUMP. The power dump feature dissipates the energy
created by a regenerative load (100 joules maximum). The power
dump is not designed to protect the unit from overvoltage caused by a
poorly regulated or faulty power supply. A 35
Ω
, 10 watt power
resistor (such as a Dale RH-10) is the recommended power dump
resistor. The resistor must be adequately heat sunk to meet its rated
wattage. The power dump resistor must be connected between the
DUMP and VDC+ screw terminals.
CAUTION
Never allow the voltage supplies by the power supply to exceed 80VDC. Damage to
the power dump resistor may result.