14
Options
4
4 Options
Options
Consider the following changes to tune/improve the performance of the drive/system.
•
SPEED FEEDBACK SELECTION
If the system is to use
Tacho
feedback you can now adjust
for the tachogenerator's output voltage, and hence the speed of the motor.
NOTE: IR COMP
must NOT be used with Tacho feedback - set the potentiometer
fully anti-clockwise.
a. With the power off, connect the tachogenerator's output voltage to Terminal 9.
Set the
Tach/Avf
switch S8 to OFF (left).
Calculate the output voltage from the tachogenerator:
For example, if quoted as "100 V per 1000 revs/min" then
feedback voltage = (motor speed/1000) x 100 V
Alternatively, it can be estimated as follows:
1. Whilst still in Avf mode and running at 100% speed, measure the tacho
volts on the wire intended for connection to Terminal 9 -
WARNING:
possible high voltage.
Note this voltage,
stop the motor and turn off
the supply.
2. Set the
Tach/Avf
switch S8 to OFF (left) to disconnect Avf and then
reconnect the tacho wire to Terminal 9.
b. Reset switches S3 and S4 to a suitable range for the measured/calculated Tacho
voltage.
c. Run the drive using a low to middle speed setpoint.
d. Adjust the
Max spd
preset to achieve the required shaft speed at maximum speed
setpoint.
Run the drive in
Armature Voltage
feedback mode and check the polarity of the
tacho using a voltmeter. The tacho feedback polarity must be negative with respect to
COMMON, Terminal 8 for a Positive Speed Demand on Terminal 3.
WARNING!
PERSONAL INJURY HAZARD
Terminals A1+, A2-, F1+, F2-, L2/N & L are at high potential.
Do not touch
the terminals or any connected conductor.
•
TORQUE CONTROL MODE
: Switch S3 allows a Torque signal to be entered when ON via
signal pad 64 (TI) which is on the top edge of the board.
Summary of Contents for 1600i
Page 6: ......
