Trips and Fault Finding 7-5
DC590+ Series DC Digital Drive
Power Board Current Calibration Switches (Frames 6 & H)
NO POWER IS CONNECTED AT THIS STAGE
To access the power board remove the terminal cover, unscrew the two fixings on the right hand side of the control door. Open the door to reveal the
power board.
Power Board
Calibration Switches
ON
OFF
9
SW7
SW8 - 9
1 = ON
0 = OFF
SW10
SW1 - 6
Armature Current Calibration
500A stages (factory setting = 2000A)
Reserved (factory setting = ON)
8
0 0 x 1 up to 20A (factory setting)
0 1 x 2 up to 40A
1 0 x 3 up to 60A
1 1 x 4 up to 80A
OFF = VA / 100 (for VA up to 875V) (factory setting)
Field Current Calibration
Multiplier Field Current Range
Armature Voltage Calibration
(not used on standard build)
123456 89107
thus switches 1 to 4 = ON
Figure 7-1 Calibration Switches
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:
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