4-6 Operating the Drive
DC590+ Series DC Digital Drive
Set the following parameters:
CONFIGURE ENABLE
Set to TRUE. This allows you to change parameter values, but the drive cannot run.
NOM MOTOR VOLTS – Armature Voltage (VACAL)
If the drive is designed for use on a nominal 3-phase power supply of 500, 600 or 690V, set the Armature Voltage value in the NOM MOTOR VOLTS
parameter.
OR
If the drive is designed for use on a nominal 3-phase power supply of 220V, set DOUBLE the Armature Voltage value in the NOM MOTOR VOLTS
parameter.
NOTE Refer to the Product Code on the drive's Rating Label to confirm the drive's specification. Also refer to Appendix E: "Technical
Specifications" - Understanding the Product Code.
ARMATURE CURRENT (IA CAL)
Note the maximum armature current from the motor rating plate and set this value in the ARMATURE CURRENT parameter.
FIELD CURRENT (IF CAL)
Note the nominal field current from the motor rating plate and set this value in the FIELD CURRENT parameter.
Frame H: The factory setting of the power board calibration switches allows for a Field Current range of up to 20A. If the Field Current is greater than
20A, refer to Chapter 7: "Trips and Fault Finding" - Power Board Current Calibration Switches (Frames 6 & H). If in doubt, use Ohms Law to
calculate the current i.e. Field Volts/Field Resistance.
FLD.CTRL MODE
Set the field control mode to Field Voltage or Field Current control. Refer to Appendix D: “Programming” - FIELD CONTROL for further
information. By default, the drive is operating in Voltage Control mode.
FLD.VOLTS RATIO
Enter the calculated ratio into the parameter given by the equation:
The maximum value obtainable is 90%, i.e. field output = 0.9 x Vac. Setting this parameter higher than the default 90% will not increase the field
output.
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