Moeller DE4-COM-2X, Manual

Page: 78 / 167

Screening with
Additional PE Cable
GB-17
03/01 AWB823-1279-D/GB/F
English
Screening with
Additional PE Cable With drive controller models DF4-120 and DF4-340, electro-
magnetic radiation can impair the communication with the
interface module. In order to ensure reliable communication,
use an additional external PE cable.
Figure 8: Additional earthing with external PE cable
Galvanic Isolation With frequency inverter models DF4-120 and DF4-340, addi-
tional galvanic isolation is required between the frequency
inverter and the control computer (PC) if you need double
basic insulation according to VDE 0160 .
In the case of the RS 232-Interface, the galvanic isolation
module can be installed either at the RS 232 connector for
the interface module or at the serial interface connector on
the control computer.
2
PE
RS 6.3 mm
Cu 2.5 mm
h This is not necessary for the drive controller model
DF4-341.