9.5 Troubleshooting the AKD
Drive problems occur for a variety of reasons, depending on the conditions in your instal-
lation. The causes of faults in multi-axis systems can be especially complex. If you cannot
resolve a fault or other issue using the troubleshooting guidance presented below, customer
support can give you further assistance.
More details on the removal of faults can be found in the WorkBench online help.
Problem Possible Causes Remedy
HMI message:
Communication fault
l wrong cable used, cable plugged
into wrong position on drive or PC
l wrong PC interface selected
l plug cable into the correct sockets on
the drive and PC
l select correct interface
Drive does not enable l HW Enable not wired
l HW or SW Enable not set
l connect HW Enable (X8 pin 4)
l Apply 24V to HW Enable and select SW
Enable in WorkBench / Fieldbus
Motor does not rotate l drive not enabled
l software enable not set
l break in setpoint cable
l motor phases swapped
l brake not released
l drive is mechanically blocked
l motor pole no. set incorrectly
l feedback set up incorrectly
l apply ENABLE signal
l set software enable
l check setpoint cable
l correct motor phase sequence
l check brake control
l check mechanism
l set motor pole no.
l set up feedback correctly
Motor oscillates l gain is too high (speed controller)
l feedback cable shielding broken
l AGND not wired up
l reduce VL.KP (speed controller)
l replace feedback cable
l join AGND to CNC-GND
Drive reports
following error
l Irms or Ipeak set too low
l current or velocity limits apply
l accel/decel ramp is too long
l verify motor/drive sizing
l verify that IL.LIMITN/P,VL.LIMITN/P
are not limiting the drive
l reduce DRV.ACC/DRV.DEC
Motor overheating l motor operating above its rating
l motor current settings incorrect
l verify motor/drive sizing
l verify motor continuous and peak cur-
rent values are set correctly
Drive too soft l Kp (speed controller) too low
l Ki (speed controller) too low
l filters set too high
l increase VL.KP (speed controller)
l increase VL.KI (speed controller)
l refer to documentation regarding reduc-
ing filtering (VL.AR*)
Drive runs roughly l Kp (speed controller) too high
l Ki (speed controller) too high
l filters set too low
l reduce VL.KP (speed controller)
l reduce VL.KI (speed controller)
l refer to documentation regarding
increasing filtering (VL.AR*)
During installation,
the message “Please
wait while the installer
finishes determining
your disk space
requirements”
appears and never dis-
appears.
l MSI installer issue.
l Harddisk space not sufficient
l Cancel the installation. Relaunch the
installer (you may need to try several
times, the problem is random).
l Make sure that you have enough disk
space on your hard disk (~500MB to
allow Windows .NET update if nec-
essary), if not make some space.
AKD Installation | 9 Setup
Kollmorgen™ | May 2013 191
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