Hook-Up Procedure For Motors Without Timing Diagrams; Features; Sensor Spacing & Input Voltage Selection - DART Controls 730 Control Series Instruction Manual

Now apply power to the control. Slowly increase the speed by adjusting the Speed Pot clockwise.
Watch for erratic rotation or excessive source current. If either occurs, immediately turn the Speed Pot
counterclockwise to reduce speed, and turn off the power. Try a new phase line configuration, apply
power and test again. There are six (6) different combinations for connecting the three phase lines to
the control. One of them will work. The correct combination will allow smooth rotation of the motor and
the lowest current draw from the DC source.

Hook-up Procedure for Motors without Timing Diagrams

If the BLDC motor has with no timing diagram, it is possible, with a little patience, to sort out the various
leads and operate it with the 730 Series control. Find a voltmeter that will read a 6.25 volt logic level.
First, separate the three motor armature wires from the sensor wires. Armature wires are usually a
heavier gauge wire. Once the armature wires are found, check them by measuring the resistance
between any two. The resistance should be low, under 100 ohms, and be the same across any two of
the three wires. The remaining five wires are the three sensors, sensor power, and sensor common.
To find the power and common, look for color and gauge differences. If all else fails, call the motor
manufacturer. Once the sensor power leads have been located, the remaining three leads will be the
Hall sensors. Now construct a timing diagram using the sensor lines. First, connect the motor to the
control, but leave off the three motor armature wires. Don't worry about sensor spacing at this time.
Next, connect the voltmeter to any sensor lead. Reference the meter to terminal COM of P1. Apply
power and slowly rotate the motor shaft by hand. The meter should move from 0 to >5 volts as the
Hall sensor switches. Check the other two sensors for switching.
Now, compare each sensor against the others and draw a timing diagram. The motor can now be
hooked up with this new information using the procedure for motors with timing diagrams.
Sensor Spacing & Input Voltage Selection
Normally the 730 Series control is shipped ready for 120 degree sensor spacing (P2-2 and P2-3
connected). However, if connecting to a motor that has 60 degree sensor spacing, connect the supplied
jumper to P2-2 to P2-1. Note figure 1 of the Hook-Up Diagram section, which shows the location of
the selectable sensor spacing connector and attached jumper connector. Using this selectable jumper
connector enables the control to drive motors with 60 or 120 degree sensor spacings.
The input voltage is also jumper selectable and is shipped with the standard setting of 24/48VDC input
(P3-2 and P3-3 connected). If 12 volt input is desired, move the supplied jumper to connect P3-2 to
P3-1. See figure 1 of the Hook-Up Diagram section for location of the selectable input voltage connector
and attached jumper connector.
Speed Command Selection and Hook-up
The 730 series controls can be operated with a 5K potentiometer (supplied with control) or a 0 to 5VDC
power source. The 5K ohm speedpot is connected to terminals P1-12, P1-13, and P1-14. Connect the
speedpot "LO" lead (orange wire) to terminal P1-14, the speedpot "WIPER" lead (red wire) to P1-13,
and the speedpot "HI" lead (white wire) to P1-12. A 0 to 5V DC signal can also be used to regulate the
speed. This is accomplished by connecting the DC source signal lead to terminal P1-13 (WIPER) and
the common lead to terminal P1-14 (LO).
Note: A 5K ohm resistor must be connected from the Pot Hi terminal (P1-12) to the Pot Lo terminal
(P1-14) for proper operation of the Min trimpot.

Features

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