Digitax HD M75X Quick Start Guide
17
Issue Number: 2
•
Select ‘Default parameters‘ from the Dashboard and in the ‘Default Parameters’ dialog,
select ‘Apply’.
If the required control mode is not highlighted in the ‘Drive Settings’ dialog then:
•
Select the required mode and supply frequency.
•
Select ‘Apply’.
3. Select ‘Setup’ and perform the steps highlighted:
4. Select 'Save parameters in drive' to perform a parameter save.
The drive is now ready to run.
4.4
Current limits
The default setting for the current limit parameters is:
•
165 % x motor rated torque producing current for open loop mode
•
250 % x motor rated torque producing current for RFC-A and RFC-S modes.
There are three parameters which control the current limits:
•
Pr
04.005
Motoring Current Limit:
power flowing from the drive to the motor
•
Pr
04.006
Regen Current Limit:
power flowing from the motor to the drive
•
Pr
04.007
Symmetrical Current Limit:
current limit for both motoring and regen operation
The lowest of either the motoring and regen current limit, or the symmetrical current limit applies.
The maximum setting of these parameters depends on the values of motor rated current, drive
rated current and the power factor. The drive can be oversized to permit a higher current limit
setting to provide higher accelerating torque as required up to a maximum of 1000 %.
Action
Detail
Motor Set-up
Connect contains a database for induction motors and permanent magnet motors. Provision is
also made to enter motor nameplate data.
Motor Feedback
Set-up
This only needs to be performed in RFC-S and RFC-A (with feedback) modes.
Enter the encoder type and encoder configuration data as prompted on screen.
If output voltage from the encoder is > 5 V, then the termination resistors must be disabled
Pr
03.039
to 0.
Speed References
Enter preset speeds or a jog reference if required.
Ramps Set-up
Enter the required Acceleration rate and Deceleration rate.
Note: If a braking resistor is installed, set 'Ramp mode' to 'Fast'. Also ensure Pr
10.030
and
Pr
10.031
and Pr
10.061
are set correctly, otherwise premature 'Brake R Too Hot' trips may be
seen.
I/O Setup
Map I/O terminals to parameters (where non default configuration is required).
Analog I/O
Configure Analog input 1 and thermal monitoring parameters (where non default configuration
is required).
Digital I/O
Allocate non default digital control functions to digital terminals where necessary.
Autotune
Follow the Autotune set up wizard to automatically tune the drive to the motor.
Not required when using data from the motor database for a Leroy Somer LSRPM motor used in
RFC-S Sensorless mode.
NOTE
Setting the encoder voltage supply too high for the encoder could result in damage to
the feedback device.
CAUTION
NOTE
