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DOC No: 8540 REV D
EagleDrive Electrical Connection (Continued)
Control Signal In
0 to 5 VDC Speed Control
When the lead is connected to a supply within the range the motor speed is proportional
to the input. The applied voltage must be within -0.3 to +5.1 VDC or the motor will be
irreparably damaged.
Common Ground
The input voltage, control inputs, fault flags, and the tachometer output all use a
common ground. It is possible that ground potential differences between the power
supply, control voltage source and the frequency counter (if used) will be forced to the
same ground reference when connected to the EagleDrive. Ensure only one earth
ground is used to avoid ground loops.
Isolated Ground
The motor common (black) wire is isolated from the motor housing. There is an internal
connection between the cable shield (bare wire) with the common (black) wire. If the
black lead is connected to the shield, EMC will not be affected. This can be done at the
customer input end of the cable.
Using The Tachometer Output
The tachometer output can be monitored using a frequency counter. The tachometer
output is 0-5V square wave pulse that occurs twice per pump drive revolution. To convert
the tachometer output to rpm, multiply the output frequency (Hz) by 30.
Inadvertent connection of the tachometer output (green) wire to ground
or the supply voltage can cause damage to the drive. If the tachometer is
not used, trim and insulate the green lead.
CAUTION
DO NOT reverse the direction of rotation of the drive until the drive has
come to a complete stop. Reversing the direction while the drive is still
turning may damage the motor.
CAUTION
NOTE
NOTE
Inadvertent grounding of the forward/reverse (orange) wire will cause the drive
to operate in reverse. If reverse operation is not required, trim and insulate the
orange lead.
Motor/Pump performance will be different between FWD and REV operating
modes.
Forward/Reverse Operation
The direction of fluid flow can be changed by connecting the orange wire to ground.
For FORWARD flow, make NO CONNECTION to the orange wire. For REVERSE flow,
connect the orange wire to GROUND.
