Jetter JM-204-480, User Manual, Page: 15 / 126

JetMove 204-480 1.2 Ensure Your Own Safety
Jetter AG 15
1.2.3 Earthing procedure
Screw the enclosure of the digital servo amplifier JetMove 204-480 onto a
highly conducting, earthed panel.
Do only use the digital servo amplifier JetMove 204-480 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 asymmetrically earthed networks.
The digital servo amplifier JetMove 204-480 has got a leakage current
greater than 3.5 mA. In order to avoid electric shocks, a second
protective earth conductor will be required.
For this, the following measures must be taken:
• The protective earth bus must 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 must be equal to the
diameter of the supply lines (1.5 mm
²
min. / AWG 16).
• A durable connection with the power supply of the digital servo amplifier
JetMove 204-480 must be provided.
• Correct cabling of the PE (GND) bus according to the connection
diagram (cf. chapter 10 "Connection Diagrams", page 83) must be
carried out.