Specifications

E-500/E-501 Series PZT Servo Controllers User Manual PZ 62E
Release 2.15.1 www.pi.ws Page 39
5.7.4. High-Voltage Actuator Types and Terminology
If you order the actuator and controller together, and/or provide PI with sufficient information about
your application, then the actuator connector, output voltage range and gain polarity will be set up as
required.
If you are connecting other actuators or wiring your own connector, read the discussion of actuator
type carefully and any documentation that came with the actuator.
Bipolar Actuators
Here the output voltage swing is so chosen that the actuator sees both negative and positive high
voltages. The output always has one lead at 0 V, and here the other is in a zero-crossing range,
commonly·±500·V.
Unipolar Actuators
The notation of “positive” and “negative” polarity of piezo actuators does not refer to their direction of
motion. Unipolar piezos of any polarity will elongate when a higher voltage is applied to their (+) than
to their (-) terminal.
“Positive” and “negative” refers to the sign of the voltage on the core of the cable.
All standard PI piezo actuators with 2-conductor LEMO connectors have positive polarity.
5.7.5. Pin Assignment
PZT High Voltage
Type: LEMO EGG.0B.701.CJL.1173
HV OUT: High-voltage output
PGND: Power ground
Housing: Cable shield
32-pin connector, DIN 41612, male
Row PIN a PIN c
2 IN: Power Fail* OUT: control (E-508.00: BNC+Offset / E-508.OE: SMB)
4 IN: control OUT: monitor of piezo voltage (PZT ÷1000)
6 nc nc
8 nc nc
10 nc nc
12 nc nc
14 internal use (Bus_A)* internal use (Bus_B)*
16 internal use (Bus_Vcc)* internal use (Bus_GND)*
18 nc nc
20 nc nc
22 GND (measurement) GND (measurement)
24 GND GND
26 IN: +24 V to +27 V IN: +24 V to +27 V
28 nc nc
30 nc nc
32 Protective earth (chassis) Protective earth (chassis)
* no connection on E-508.OE
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