CENTRALINE I/O MODULES – INSTALLATION & COMMISSIONING INSTRUCTIONS
EN1Z-0973GE51 R0119
16
Wiring and Setting up the System
General Safety Considerations
When connecting the controller or CentraLine I/O modules,
both VDE, National Electric Code (NEC) or equivalent, and
any local regulations concerning grounding and zero
voltage must be observed.
Electrical work should be carried out by a qualified
electrician.
The electrical connections must be made at the terminal
blocks. The corresponding connection diagrams are
located on the individual controller module and
I/O modules.
For Europe only: To comply with CE requirements, devices
with a voltage in the range of 50 ... 1000 VAC or 75 ...
1500 VDC, which are not provided with a supply cord and
plug or with other means for disconnection from the supply
having a contact separation of at least 3 mm in all poles,
must have the means for disconnection incorporated in the
fixed wiring.
WARNING
Risk of electric shock or equipment damage!
► Do not touch any live parts in the cabinet.
► Disconnect the power supply before making connections
to or removing connections from terminals of controller or
I/O modules.
► Do not use spare terminals as wiring support points.
► Do not reconnect the power supply until you have
completed the installation.
► Unused terminals must be closed (by completely
screwing in the terminal screws), thus preventing the
accidental touching of “live” parts.
► Observe precautions for handling electrostatic sensitive
devices.
Wiring Push-in Terminals
The terminal sockets of the pluggable I/O modules are
available in versions (XS821-22, XS823, and XS824-25)
featuring convenient push-in terminals for easy wiring. The
CLIOP830A likewise features push-in terminals.
For correct wiring, cables must fulfill the following
specifications according to IEC664-1 / VDE 0110 (4.97):
Table 21. Push-in terminals wiring specifications
Max. plug gauge
0.14 … 1.50 mm
2
Solid conductor H05/07) V-U
0.25 … 1.50 mm
2
Stranded conductor H05(07) V-K
0.25 … 1.50 mm
2
Stranded conductor with wire end
ferrules (without plastic collar)
0.25 ... 1.50 mm
2
Stripping length 8.0 +1.0 mm
NOTE: In the case of solid conductors, the use of ferrules
is prohibited.
NOTE: Use only one conductor per push-in terminal.
NOTE: If two stranded wires are to be connected to a
single push-in terminal, twin wire end ferrules must
be used.
Wiring Screw-Type Terminals
The terminal sockets of the pluggable I/O modules are also
available with screw-type terminals (XSU821-22, XSU823,
and XSU824-25). The CLIOP831A likewise features screw-
type terminals.
For correct wiring, cables must fulfill the following
specifications according to IEC664-1 / VDE 0110 (4.97):
Table 22. Screw-type terminals wiring specifications
Max. plug gauge
0.14 … 1.50 mm
2
Solid conductor H05/07) V-U
0.25 … 1.50 mm
2
Stranded conductor H05(07) V-K
0.25 … 1.50 mm
2
Stranded conductor with wire end
ferrules (without plastic collar)
0.25 ... 1.50 mm
2
Stripping length 11.0 +1.0 mm
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