Jetter JetMove 225-480, User Manual, Page: 16 / 126

1 Safety Instructions
JetWeb
16 Jetter AG
1.2.3 Earthing procedure
Fig. 1: Double earthing
Screw the enclosure of the digital servo amplifier JetMove 225-480 onto a
highly conducting, earthed panel.
Do only use the digital servo amplifier JetMove 225-480 at the three-
phase, earthed industrial network (TN network, TT network with earthed
neutral, 5,000 A max, symmetric rated current at 400 / 480 V + 10 %).
The digital servo amplifier must not be operated when connected to
unearthed networks and to unsymmetrically earthed networks.
The digital servo amplifier JetMove 225-480 has got a leakage current
greater than 3.5 mA. In order to avoid electric shocks, a second
protective earth conductor is required.
For this, the following measures have to be taken:
• The protective earth bus has to be connected to the PE (GND) bolt (1)
located at the top side of the rack as well as to the PE (GND) terminal
X1 (2) (please refer to Fig. 1).
The diameter of the two earthing conductors has to be equal to the
diameter of the supply lines (min. 2.5 mm
²
/ AWG 14).
• A durable connection with the power supply of the digital servo amplifier
JetMove 225-480 must be provided.
• Correct cabling of the PE (GND) bus according to the connection
diagram (cf. chapter 10 "Connection Diagrams", page 85) has to be
carried out.