Filter
Top Products
— 7 —
Wiring Requirements
WARNING
Do not disconnect modules or wires unless the power supply has been switched off or the area is known
to be non-hazardous.
The devices may only be connected to the supply voltage shown on the type plate.
The devices are designed for operation with a safety extra-low voltage. Thus, they may only be
connected to the supply voltage connections and to the signal contact with the safety extra-low voltages
(SELV) in compliance with IEC950/ EN60950/ VDE0805.
WARNING
Substitution of components may impair suitability for Class
I, Division 2 and Zone 2.
These devices must be supplied by a SELV source as defined in the Low Voltage Directive
73/23/EEC and 93/68/EEC.
WARNING
This equipment has been evaluated as EEx nC IIC T4 equipment under DEMKO Certificate No.
03 ATEX 0324537U. Each module is marked II 3G and is suitable for use in Zone 2
Explosive Atmospheres. The device must be installed in a minimum IP 54 enclosure as defined in
IEC 60529 and EN 60529.
ATTENTION
This unit is a built-in type. When the unit is installed in another piece of equipment, the equipment
enclosing the unit must comply with fire enclosure regulation IEC 60950/EN60950 (or similar
regulation).
ATTENTION
Safety First!
Be sure to disconnect the power cord before installing and/or wiring your MOXA EtherDevice
Switch.
Calculate the maximum possible current in each power wire and common wire. Observe all
electrical codes dictating the maximum current allowable for each wire size.
If the current goes above the maximum ratings, the wiring could overheat, causing serious
damage to your equipment.
You should also pay attention to the following items:
! Use separate paths to route wiring for power and devices. If power wiring and device wiring
paths must cross, make sure the wires are perpendicular at the intersection point.
! NOTE: Do not run signal or communications wiring and power wiring in the same wire
conduit. To avoid interference, wires with different signal characteristics should be routed
separately.
! You can use the type of signal transmitted through a wire to determine which wires should be
kept separate. The rule of thumb is that wiring that shares similar electrical characteristics
can be bundled together.
! Keep input wiring and output wiring separated.
! It is strongly advised that you label wiring to all devices in the system when necessary.