12
Accessible surfaces of the device are insulated from the circuits with basic
insulation to IEC 61010-1 (secondary circuit with max� 32 V DC, supplied from the
mains circuit up to 300 V of overvoltage category II)�
The GND of the supply is connected via EMC suppression capacitors on the
shield connection (metal housing) of the device�
The external wiring has to be carried out in a way that ensures the required
separation from other circuits�
6.1 Wiring
Wiring (→ 8 Technical data)
The connection terminals may only be supplied with the signals indicated in
the technical data / on the device label and only the approved accessories
from ifm may be connected�
Only connect the connector pins as shown in the pin layout�Unspecified
connector pins remain unconnected� The unconnected connector pins need
to have sealing of the individual cores�
ATTENTION!
Absence of reverse polarity protection
Reverse polarity protection is only ensured in case of supply via
the on-board system (via a battery), if the polarity of the supply
is reversed as a whole (battery connected incorrectly)� The basic
principle of the reverse polarity protection is that the upstream
fuses are quickly switched off in case of excessive current�
In case of supply via PELV, reverse polarity protection is not
ensured�
> Damage to the device
► Ensure that the ends of the cables are properly connected to
the connector before connecting the latter to the device, also in
case of supply via the on-board system�
The device is designed for supply via a mobile on-board system (12/24
V DC nominal voltage) or protective low voltage PELV according to the
technical data and national regulations� The supply is directly transferred to
the connected sensors/actuators without electrical separation�
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