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7-2
Trips and Fault Finding
590+ Series DC Digital Converter
Fault Finding
Problem
Possible Cause
Remedy
Converter will not
power-up
Fuse blown
Check supply details, replace with
correct fuse.
Check Product Code against Model No.
Faulty cabling
Check all connections are correct and
secure.
Check cable continuity
Converter fuse keeps
blowing
Faulty cabling or connections
wrong
Check for problem and rectify before
replacing with correct fuse
Faulty Converter
Contact SSD Drives
Cannot obtain
HEALTH state
Incorrect or no supply
available
Check supply details
Motor will not run at
switch on
Motor jammed
Stop the Converter and clear the jam
Motor runs and stops
Motor becomes jammed
Stop the Converter and clear the jam
Motor runs at full
speed only
Reversed tachogenerator or
open circuit tachogenerator
Check tachogenerator connections
Open circuit speed reference
potentiometer
Check terminal
Table 7-1 Fault Finding
Calibration Checks
The drive leaves the factory with the following calibration switches correctly set. Inappropriate
settings will prevent the drive from operating correctly. For your reference, the correct settings
are given below.
IMPORTANT:
If you change the settings for any of these switches you M
MUST re-calibrate the Control
Board. Refer to Chapter 4: "Operating the Converter" - Calibrating the Control Board.
Control Board Calibration Scaling Switch (all Frames)
NO POWER IS CONNECTED AT THIS STAGE
The switch is viewed through the Speed Feedback option tray on the front of the
drive (left-hand side). The switch is set to "1" (ON) for all frames, except for the
15A Frame 1 where it is set to "OFF".
Power Board Current Calibration Switches (Frame 2)
NO POWER IS CONNECTED AT THIS STAGE
View the switches with the drive door open:
SW1 - Product Identity Switch
This switch is always set to HI.
SW2 - Burden Switch
This switch is always set to HI.
1
OFF
Power Board
SW2
SW1
HI
LO
HI
LO
Burden Switch
Product Indentity