PI P-08 Series, User Manual, Page: 44 / 63

6 Starting and O
40 Version: 1.1.0 PZ259E P-88x/P-08x Piezo Actuator
Discharging a P-88x/P-08x not connected to the electronics
If the P-88x/P-08x does not have a connector:
1. If necessary, let the P-88x/P-08x cool down.
2. Ensure adequate protection against touching live parts.
3. Short-circuit the electrodes of the P-88x/P-08x for at least a few seconds using a
10 k Ω
discharge resistor .
If the P-88x/P-08x has a connector:

Connect the voltage connection of the P-88x/P-08x to the switched off PI electronics,
which has an internal discharge resistor, for at least a few seconds.
6.5 Short-Circuiting the P-88x/P-08x
The P-88x/P-08x must be discharged (p. 39) and short-circuited before demounting (e.g., before
cleaning and transportation of the P-88x/P-08x) as well as for modifications.
Requirements

You have read and understood the general notes on installation (p. 17).

You have discharged the P-88x/P-08x and disconnected it from the electronics.
Tools and accessories

If no open stranded wires are accessible on the piezo actuator: Suitable conductive aid
for short-circuiting the piezo actuator that does not scratch the surface of the piezo
actuator (e.g., conductive rubber)
Short-circuiting the P-88x/P-08x

If bare stranded wires are accessible on the P-88x/P-08x:
Twist the stranded wires of the discharged piezo actuator with each other.

If no bare stranded wires are accessible on the P-88x/P-08x:
a)
If necessary, let the P-88x/P-08x cool down.
b) Affix a suitable, conductive aid on the discharged piezo actuator that does not
scratch the surface of the piezo actuator (e.g., conductive rubber).