Screening With Additional Pe Cable; Galvanic Isolation - Moeller DE4-COM-2X Manuel

03/01 AWB823-1279-D/GB/F
Screening with
Additional PE Cable

Galvanic Isolation

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.
RS 6.3 mm
2
Cu 2.5 mm
PE
Figure 8: Additional earthing with external PE cable
h This is not necessary for the drive controller model
DF4-341.
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.
Screening with
Additional PE Cable
GB-17