Potentiometer "Dc-Level; Modulation Input: Mod; Monitor Output Socket: Mon; Actuator Socket: Out - piezosystem jena ENT Instruction Manual

display / LED
3.5 LC display
green LED for "CLON"
green LED for "ON"
red LED for Out Of
Range

8.2.3. potentiometer "DC-Level"

Manual adjustment of the offset voltage.

8.2.4. modulation input: MOD

An analog modulation signal of 0 to +10V can be driven into this socket to realize
a remote-controlled operation. A sum of the MOD socket voltage and the offset
voltage set at the potentiometer "DC-level" occurs. The local-mode voltage is also
in the range of 0 to +10V. Both, externally driven voltages and internal OFFSET
must be between 0 and +10V. Voltages outside of the permissible field are
signaled by the OOR-LED.

8.2.5. monitor output socket: MON

In open loop configuration the MON output shows a tenth of the output voltage.
In closed loop configuration the MON output shows the sensor signal. When
closed loop is turned on the voltage is in the range from 0 to +10 Volt. In open
loop mode the voltage can be outside this range. Values below 0 Volt and above
10 Volts belong to the motion reserve for closed loop operation.
To control the motion especially in dynamic application the use of an oscilloscope
is recommended. Please take care that the used measuring device has an inner
resistance of at least 10M. The MON output is not short-proof. Do not drive any
voltages into the MON output.

8.2.6. actuator socket: OUT

Output socket for the actuator, voltage -10 ... +150V (ENV40) or rather -
20...+130V (ENV300 / ENV800).

8.2.7. adjustment of the ZERO position (ZERO)

It allows to adjust the display value for closed-loop zero position (only in closed
loop systems).
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48
closed loop system
displays the motion in µm
display closed loop ON/OFF
There is a time delay of about 2 sec. after switching on the
power supply to avoid voltage peaks. If the green LED is on,
the amplifier is ready to work.
It is possible to generate voltages higher then 150V by adding
modulation input voltage and offset level. These voltages can
cause damages to the actuator. A protection circuit cuts off
higher voltages and the red LED indicates this status.
open loop system
shows the output voltage in V
n.c.
table 14: ENV display / LEDs