Geschäftsführer: Dr. Bernt Götz • Telefon 03641/66880 • Fax 03641/668866 • www.piezosystem.com
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Switch on the system, the LED on the power supply will light up. After short
initialization ti
me the amplifier will be ready (LED “ON” lights up). Turn on closed-
loop if required.
8.2. common operation
8.2.1. power supply ENT ***
On the front panel is the main switch for the ENT/ENV system along with an LED
signal, which indicates that the power supply is working.
8.2.2. ENV display, LEDs
After turning on, the left “ON” LED announces the amplifier is ready.
open loop configuration (ENV40 / ENV300 / ENV800 / ENV40C / ENV **
nanoX):
The display shows the output voltage always.
closed loop configuration (ENV ** SG/CAP):
The display shows the non-controlled actuator motion [µm] immediately. The
actuator is outside of the controlled range by adjusting the potentiometer to the
extreme counter clockwise position (most negative point of the total control range
(Pos.1 to Pos.4, see sketch
). If it is then switched to closed loop, the actuator
moves to the zero closed loop position (Pos.2), the display shows 0.0 (±0.1) µm.
Depending on the position set currently, the actuator may carry out a jump. This
is because the closed loop control range is approximately 80% of the open loop
control range.
When the potentiometer “DC-Level” is turned to the max. clockwise position, the
controlled maximum motion is covered (Pos.3) and shown in the display. The
value depends on the specifications of the actuator and can vary depending on
actuator model.
The red “OOR”-LED announces a malfunction or overload. Remove the
modulation signal from the MOD socket. If the “OOR” is still on check whether
removing the sample loaded on the actuator will solve this problem. Please, try to
avoid overload in this case.
If the “OOR” is still on immediately switch off the system and contact your local
representative for support. It is possible that the actuator protection mechanisms
are not functioning properly.
