PowerTec Regenerative Brushless DC Motor Control 1000AR - Manual (Page 42)

Model 1000AR Installation and Operation Manual P AGE
41
OFFICIAL 6/4/2001
WHAT HAPPENS WHEN I …
M AKE AN ADJUSTM ENT O N THE M O DEL 1000AR ?
Once the motor is running, it may be necessary to make adjustments to produce the desired results.
ZERO
speed
MAX speed
JOG speed
DECEL time
START
Speed
Pot at
CCW
Speed
Pot to CW
STOP
RAMP
STOP
JOG
ON
JOG
OFF
Speed
Pot to
Center
ACCEL time
ACCEL time
Speed
Pot to
CCW
The speed pot may be connected for bi-polar reference input. The CW end of the pot should be
connected to +10VDC (TB2-6), the CCW end to -10VDC (TB2-4), and the wiper to TB2-5.
If the speed pot is turned to 100% clockwise (CW), or the speed reference is otherwise increased to
+10VDC at TB2 terminal 5, the motor will accelerate to the maximum speed at the ACCEL rate.. You may
use the MAX on the Speed Controller to adjust maximum speed of the motor. Actually, MAX will affect the
speed at any reference. The MAX adjustment is not an absolute limit. It is a calibration to the reference.
If you then turn the speed pot to the center (0.0 VDC), the motor decelerates to a stop at the DECEL
rate. If the input is not exactly 0.0 VDC, the motor may turn slowly in one direction or the other.
Turning the speed pot to the CCW end causes the motor to accelerate to the MAX speed in the other
direction at the ACCEL rate.
The amount of time it takes the motor to change from zero speed to maximum speed is adjustable
with the ACCEL pot on the Speed Controller. The range of time depends on how JP2 is installed. With
JP2 in the R/L position, the time for acceleration is adjustable from about 0.5 seconds (ACCEL pot fully
CCW) to about 20 seconds (ACCEL POT fully CW). With JP2 in the DIR position, the time is not
adjustable.
The ACCEL time is the time it takes the ramp circuit to change the speed reference from zero to full
speed. The motor may not accelerate in the same amount of time if it is limited by inertia or load, in which
case the motor will accelerate in current limit.
When the STOP button is pressed at full speed, if the COAST TO STOP jumper is removed, the
drive will shut off and the motor will coast to a stop. The time it takes the motor to stop is called the “coast
time”. This time is not controlled unless Dynamic Braking is installed.
If the STOP button is pressed and the COAST TO STOP jumper is installed, RAMP STOP mode is
initiated. The speed reference input is clamped to zero after the input at TB2 terminal 10 and the drive
ramps the speed to zero. The drive then shuts off.
The amount of time allowed for the deceleration is adjustable with the DECEL pot on the Speed
Controller board. This time has the same ranges as the ACCEL pot.
The Models 1000AR is a regenerative drive. When the RAMP STOP mode is in operation, or if the
speed pot is turned to 0% while running at full speed, the DECEL time will be effective. When the motor
gets to zero speed, the drive shuts off.
JOG speed is adjustable with the JOG pot on the Speed Controller board. JOG speed is affected by
the MAX speed adjustment, but JOG speed is not affected by the MAX pot, the ACCEL pot, or the DECEL
pot. JOG accelerates in current limit.