Troubleshooting - piezosystemjena d-Drive Bedienungsanleitung

11 troubleshooting

Please check all cables and connections first if the system is not working properly.
error
no reaction at switch on
UDL/OVL-LED blinks
UDL/OVL-LED light up
in closed loop mode
actuator oscillates in
resonant frequency in
closed loop
read back parameters
always deviate with the
same level from the digital
target value
actuator does not move in
spite of the applied analog
modulation signal on the
MOD input
displayed / interface values
don't represents the real
signal sequence
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78
possible solution
Check the power cord.
Check whether the main switch on the back side is on.
In the main switch there are two fuses. Remove the power cord
from your device and check the fuses. If one is damaged please
replace, only using fuses of the same value.
Check the connection between actuator and amplifier.
Check the actuator cable for damage.
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.
Check the PID-controller adjustments, reduce the ki-value,
Reduce the kd-value.
Check whether the function generator is still working.
Please switch off the analog modulation input when it's not used.
Command: modon, x, 0 (see 8.5.3 commands). External signals
can cause interference or a command value offset.
Please switch on the analog modulation input by using command
modon, x, 1 (see 8.5.3 commands).
Maybe aliasing effect occurs. When the refresh rate is less than
the half working frequency (under sampling), aliasing will be
occur. This has an effect only for display, not for the real system.
table 14: errors