REXROTH IndraControl L25 CML...3N Series, Project Planning Manual

Page: 53 / 72

possible to break this connection for measuring ground leakage currents.
Hence, the supply current circuit is a PELV circuit.
L1
L2
L3
N
PE
U
M
U
S
U
LS GND
GND (U U )
S M
,
FE
24 V 24 V
0 V + 0 V +
Disconnectable
1.1 2.1
1.2 2.2
1.3 2.3
1.4 2.4 connections
Stop Reset
S1
L
S
X7E3
X2R
ETH
Ready
Dist.
X7E1
X7E2
L
S
L
S
Fig.8-7: Reference conductor connected to the protective conductor
Reference Conductor not Connected to the Protective Conductor
If the reference conductor (N, 0 V) is not connected to the protective conductor
system, then an appropriate ground fault detector is to be used to prevent in‐
advertent power-up in case of insulation faults. Hence, the supply current circuit
is a SELV circuit. Please note that any additionally connected equipment might
also cancel the floating setup.
L1
L2
L3
N
PE
U
M
U
S
U
LS GND
GND (U U )
S M
,
FE
24 V 24 V
0 V + 0 V +
E1
E2
1.1 2.1
1.2 2.2
1.3 2.3
1.4 2.4
Stop
S1
Reset
Dist.
Ready
L
S
X7E3
X2R
ETH
L
S
L
S
X7E1
X7E2
SERCOS
Fig.8-8: Reference conductor not connected to the protective conductor
DOK-CONTRL-IC*L25*****-PR03-EN-P
Rexroth IndraControl L25 Bosch Rexroth AG 51/69
Installation and Maintenance