7-4
Trips and Fault Finding
590+ Series DC Digital Converter
IA CAL - Armature Current
Calibration switches 1 to 4 are always set to “ON”, and 5 to 6 are always set to “OFF”.
Armature Voltage
Calibration switch SW10 is always set to "OFF".
IF CAL - Field Current
For field currents greater than 20A, set the Field Current calibration switches 8 and 9 to give the
required Field Current range. The drive’s Product Code includes the value for Field Current. If
you change the Field Current from the 20A factory setting to another value, you must now select
the correct Product Code rating:
AUXILIARY POWER ONLY IS CONNECTED AT THIS STAGE
Apply auxiliary power. Note the current Product Code which is displayed on the MMI’s
Welcome screen at the top of the menu, e.g. DC 4Q 1700A
20
D (
20
= 20A Field Current range)
Set the following parameters, but first select CONFIGURE ENABLE to be ENABLED.
Now, for instance, to set the Field Current range for 40A, you must select the appropriate
Product Code for a Field Current range of 40A, e.g. DC 4Q 1700A
40
D
To do this, refer to Chapter 5: “The Operator Station” – Changing the Stack Size (3-button
reset).
Note the nominal field current from the motor rating plate and set
this value in the FIELD CURRENT parameter.
Now select CONFIGURE ENABLE to be DISABLED and perform a PARAMETER SAVE.
You MUST re-calibrate the Control Board.
Refer to Chapter 4: "Operating the Converter" - Calibrating the Control Board.
Adaptor Board Current Calibration Switch (Frame H)
NO POWER IS CONNECTED AT THIS STAGE
View the switch with the terminal cover removed:
IA CAL - Armature Current Calibration Switch
This switch is always set to "1" (ON).
MMI Menu Map
1
CONFIGURE DRIVE
FIELD CURRENT
1
OFF