Bosch Rexroth IndraControl XM21, Руководство по эксплуатации

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FE
PE
Peripheral PSU
0 V 24 V
Logic PSU
Separable
connections
Overvoltage
category I
24 V
24 V 0 V
Fig. 10-16: Reference conductor connected to protective conductor
Dimensioning the voltage supply
Observe the maximum currents when dimensioning the voltage supply. The ope-
rating voltage allowed has to be applied directly to the device.
The voltage must also not be exceeded if:
●
there are variations in line voltage, e.g. caused by different loads of the mains
●
there are varying load states, such as short-circuit, normal load, lamp load or
no load
Connecting the reference conductor to the protective conductor
If the reference conductor 0 V (U
LS
) is connected to the protective conductor
system, this connection has to be arranged at a central place (e.g. at the load
power supply unit). Hence, the supply current circuit is a PELV circuit.
10.7.4 Grounding
Control failure due to insufficient grounding
NOTICE
An optimum grounding is required to keep away possible interferences from the
control and to discharge them to the ground.
IndraControl XM21, XM22 Controls 29/69
Mounting, demounting and electric installation
R911340667_Edition 04 Bosch Rexroth AG