Geschäftsführer: Dr. Bernt Götz • Telefon 03641/66880 • Fax 03641/668866 • www.piezosystem.com
61
11 troubleshooting
Please check all cables and connections first if the system is not working properly.
error
possible solution
UDL/OVL-LED blinks
Check the connection between actuator and amplifier.
Check the actuator cable for damage.
UDL/OVL-LED light up
in closed loop mode
The actuator is not able to reach the commanded position.
Check the modulation input and offset.
Check your actuator for mechanical blocking.
Check whether your actuators move properly in open loop mode.
actuator oscillates in
resonant frequency in
closed loop
Check the PID-controller adjustments, reduce the ki-value,
Reduce the kd-value.
Check whether the function generator is still working.
read
back
parameters
always deviate at the same
level from the digital target
value
Please switch off the analog modulation input when it’s not used.
Command:
modon,0
(see 8.4.2 commands). External signals can
cause an interference or a command value offset.
actuator does not move in
spite of the applied analog
modulation signal on the
MOD input
Please switch on the analog modulation input by using command
modon,1
(see 8.4.2 commands).
interface output values do
not
correspond
to
the
applied signal value
Aliasing: If the signal read out sequence is lower than half of the
working frequency only the serial data is affected. The real motion
values are not affected.
table 11: errors
