Optidrive VTC – User Guide
14
www.invertek.co.uk
5.5.
Terminal Control
When delivered, the Optidrive is in the factory default state, meaning that it is set to operate in terminal control mode and all parameters have the
default values as indicated in section 6 Parameters.
Connect the drive to the supply, ensuring the correct voltage and fusing / circuit breaker protection – see section 9.2 on page 26.
Connect the motor to the drive, ensuring the correct star/delta connection for the voltage rating - see section 4.6 on page 10.
Enter the motor data from motor nameplate; P1-07 = motor rated voltage, P1-08 = motor rated current, P1-09 = motor rated frequency.
Connect a control switch between the control terminals 1 and 2 ensuring that the contact is open (drive disabled).
Connect a potentiometer (1kΩ min to 10 kΩ max) between terminals 5 and 7, and the wiper to terminal 6.
With the potentiometer set to zero, switch on the supply to the drive. The display will show
.
Close the control switch, terminals 1-2. The drive is now ‘enabled’ and the output frequency/speed are controlled by the potentiometer.
On first enable from factory default parameters, the Optidrive will carry out an Autotune, and the display shows
. Leave the
control switch closed an allow this to complete.
Following completion of the Autotune, the display shows zero speed in Hz (
.
) with the potentiometer turned to minimum.
Turn the potentiometer to maximum. The motor will accelerate to 50Hz, (60Hz for USA drives), the default value of P1-01, under the
control of the acceleration ramp time P1-03. The display shows 50Hz (
.
) at max speed.
If the potentiometer is turned to minimum, the motor will decelerate to 0Hz, the default minimum speed set in P1-02, under the control
of the deceleration ramp P1-04. The output speed can be adjusted anywhere between minimum and maximum speed using the
potentiometer.
To display motor current (Amps), briefly press the
(Navigate) key.
Press
again to display the motor power.
Press
again to return to speed display.
To stop the motor, disable the drive by opening the control switch (terminals 1-2).
If the enable/disable switch is opened the drive will decelerate to stop at which time the display will show
.
5.6.
Keypad Control
To allow the Optidrive to be controlled from the keypad in a forward direction only, set P1-12 =1:
Connect the supply and motor as for terminal control above.
Enable the drive by closing the switch between control terminals 1 & 2. The display will show
.
Press the
key. If this is the first enable from factory default parameters, the drive will carry out an Autotune as described above. On
completion of the Autotune, the display shows
.
.
Press
to increase speed.
The drive will run forward, increasing speed until
is released.
Press
to decrease speed. The drive will decrease speed until
is released. The rate of deceleration is limited by the setting in
P1-04
Press the
key. The drive will decelerate to rest at the rate set in P1-04.
The display will finally show
at which point the drive is disabled
To preset a target speed prior to enable, press the
key whilst the drive is stopped. The display will show the target speed, use the
&
keys to adjust as required then press the
key to return the display to
.
Pressing the
key will start the drive accelerating to the target speed.
To allow the Optidrive to be controlled from the keypad in a forward and reverse direction, set P1-12 =2:
Operation is the same as when P1-12=1 for start, stop and changing speed.
Press the
key. The display changes to
.
.
Press
to increase speed
The drive will run forward, increasing speed until
is released. Acceleration is limited by the setting in P1-03. The maximum speed is
the speed set in P1-01.
To reverse the direction of rotation of the motor, press the
key again.
