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ctrlX CORE
Electric installation
Bosch Rexroth AG
R911405645, Edition 05
Setup with electrical isolation
Provide electrical isolation between the logic supply U
L
and the periphery supply U
P
of the I/O terminals
acc. to DIN EN 60204-1. Accordingly, the voltage U
L
(24 V logic voltage) at the control is electrically
isolated from the periphery voltages U
P
(24 V segment voltage).
FE
PE
supply unit
Separable
connections
Overvoltagecategory I, 24 V
Load
supply unit
24 V
0 V
24 V
0 V
Logic
Fig. 17: Setup of the voltage supply ctrlX CORE
PLUS
X3
Dimensioning the voltage infeed
Observe the maximum currents when dimensioning the voltage supply. The operating 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
L
, U
P
) 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.
10.5.4 Grounding
NOTICE
Failure due to insufficient grounding
An optimum grounding is required to impede possible interferences from the
control and to discharge them to the ground.
Mounting, dismounting and electr
ic ins
tallation
