Kollmorgen S700 Series, Safety Manual

Page: 77 / 216

2.7 Trouble shooting
Depending on the conditions in your installation, there may be a wide variety of reasons for the fault. In multi-axis
systems there may be further hidden causes of a fault.
Detailled hints for removal of faults can be found in the online help chapter "Trouble-Shoot-
ing". Our customer service can give you further assistance with problems.
Fault Possible causes Measures to remove the cause of
the fault
HMI message:
communication
fault wrong cable used
cable plugged into wrong position in
servo amplifier or PC
wrong PC interface selected use null-modem cable
plug cable into the correct sockets on the
servo amplifier and PC
select correct interface
Motor does not
rotate servo amplifier not enabled
break in setpoint cable
motor phases swapped
brake not released
drive is mechanically blocked
no. of motor poles set incorrectly
feedback set up incorrectly apply enable signal
check setpoint cable
correct motor phase sequence
check brake control
check mechanism
set no. of motor poles
set up feedback correctly
Motor oscil-
lates gain too high (speed controller)
shielding in feedback cable is broken
AGND not wired up reduce Kp (speed controller)
replace feedback cable
join AGND to CNC-GND
Drive reports
following error I
rms
or I
peak
is set to low
setpoint ramp is too long
increase I
rms
or I
peak
(keep within motor lim-
its!)
shorten setpoint ramp +/-
Motor over-
heating I
rms
/I
peak
set too high reduce I
rms
/I
peak
Drive too soft Kp (speed controller) too low
Tn (speed controller) too high
ARLPF / ARHPF too high
ARLP2 too high
increase Kp (speed controller)
use motor default value for Tn (speed con-
troller)
reduce ARLPF / ARHPF
reduce ARLP2
Drive runs
roughly Kp (speed controller) too high
Tn (speed controller) too low
ARLPF / ARHPF too low
ARLP2 too low
reduce Kp (speed controller)
use motor default value for Tn (speed con-
troller)
increase ARLPF / ARHPF
increase ARLP2
Axis drifts at
setpoint = 0V offset not correctly adjusted for ana-
log setpoint provision
AGND not joined to the CNC-GND of
the controls adjust setpoint-offset (analog I/O)
join AGND and CNC-GND
S700 Safety Guide | 2 English
Kollmorgen | September 2015 77