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Project Planning Manual | Rexroth IndraControl VAU 01.1Z
6.2.2
Wiring the Power Connection
leads
N conductor:
Use only with
permission of
the operator!
e.g.drives
Overvoltage category I
X10
Required cross-sections and permitted
cable lengths are sepecified in the
documentation of the connected
device (PC).
X1S2
N1
X1N1
U2
(3)
PE
FE
Functional earth
Overvoltage
category II
min. 16 mm ² (green/yellow)
16 mm ² (green/yellow)
6 mm² (green/yellow)
PE neutral point
Fuses, better: protective motor switches
400V
Transformer
acc. to EN 60742
230V
4 mm² (green/yellow)
N
PE
230 V power supply
operatorterminals
Sservice plug receptacle(s)
PC
Cross-sections depend on
current consumption
use min. 4 mm ².
For higher current consumption
use 2 × 4 mm² .
UPS
24 V load
The permitted cable lengths are
specified in the chapter "UPS wiring"
X1S1
Fig.6-4:
Wiring the power connection: 24 VDC to the UPS and 115/230 VAC to
the UPS when 400 V supply voltage of the 24 V power supply unit are
applied
Electric Drives
and Controls
Interfaces, Display and Operating Components
to the housing of the control cabinet
to the device
all housing parts (functional earth)
16 mm ² (green/yellow)
Overvoltage
category III
4 mm ² (green/yellow)
Overvoltage
category II
PE
U2
4 mm² (green/yellow)
= Terminals in isolated arrangement
Overvoltage category III
Power unit acc. to
10 mm ² (green/yellow)
EN 50178: SELV
24 VDC
6 mm ²
(blue)
(1)
Length max. 4 m
A
A
B
Earth bar
0 V load
A = Terminal block 4 mm²
B = Terminal block 10 mm²
(1)
Easily removable and visible.
(2)
PE bars should be preferably installed on the mounting
plate. In the case of isolated PE bars both ends must
be connected to the mounting plate by means of copper
strips with a maximum length of 20 cm.
The cross-section of the copper strips has to be at least
equal to that of the incoming cable.
(3) An X1N1 is connected to an UPS that supplies several
control cabinets with an uninterruptible power supply.
In this case also overvoltage category II applies.
| Bosch Rexroth AG
10 mm ² (green/yellow)
(2)
23/45
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