5
u
Install the unit outside the hazardous area.
The unit has the protection rating IP20 according to IEC/EN 60529.
u
Only install and use the unit under operating conditions that do not exceed
soiling degree 2 according to IEC EN 60664-1.
In case of use under operating conditions with a higher degree of soiling, the
unit must be protected accordingly.
u
Make sure all circuits connected with the unit comply at least with overvoltage
category II according to IEC EN 60664-1.
u
Only supplies providing protection against electrical shock (SELV or PELV)
may be connected to supply modules.
u
The installation regulations according to IEC/EN 60079-14 must be complied
with,
4.1 Requirements for cables and connection cables
u
The permissible wire cross section must be adhered to. In case multi-wire
conductors are used, they have to be crimped with wire end ferrules.
u
Make sure only one conductor per connecting terminal is used.
u
Make sure the insulation of the conductor reaches all the way to the connecting
terminal.
u
The tightening torque for the screws of the connecting terminal must be
adhered to.
If the voltage exceeds 50 V AC:
1. Switch off the voltage.
2. Attach or remove the terminal blocks.
4.2 Requirements in case of use as associated equipment
Circuits with Ex i type of protection that have been operated with non-intrinsically
safe circuits must no longer be used as circuits with Ex i type of protection then.
The intrinsically safe circuits of the associated equipment may be routed into
hazardous areas.
u
Make sure the separation distances to all non-intrinsically safe circuits
according to IEC/EN 60079-14 are observed.
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