Electrical connection
Leuze electronic
SLS 78/R
17
TNT
35/7-2
4
V
Review-Stand, , 17. March 2016
DEUTSCH
ENGLIS
H
FRAN
ÇAIS
ITALIANO
ESPAÑOL
NEDERLANDS
6
Electrical connection
• Installation and wiring of the SLS78 /R is to be performed in accordance with applicable
standards and safety regulations, particularly when connecting dangerous switching
voltages.
• The electrical connection must be performed by experienced personnel. Knowledge of
all safety notes contained in these operating instructions is part of this competence.
• The external supply voltage of 24 V DC +/- 20% must guarantee safe isolation from the
mains voltage in accordance with IEC 60742 and be able to bridge a power outage
period of at least 20 ms. Leuze electronic GmbH + Co. KG offers suitable power
supplies (see list of accessories in the Appendix chapter 11.2). The power supply
selected must not supply any other parts of the machine with power other than the
safety components connected. Transmitters and receivers must be supplied from a
shared power supply and must be fused against overcurrent.
• Basically both safety related switching outputs OSSD1 and OSSD2 must be looped into
the work circuit of the machine.
• The start/restart button for unlocking the restart interlock must be mounted in such a
way that it cannot be reached from the danger area and the entire danger area is fully
visible from its installation position.
• It is vital during the electrical installation that the power of the machine or system to be
secured is switched off locked, so that the dangerous movements cannot be started up
again unintentionally.
Connection system
Warning:
The housing cover must be screwed off before the electrical connection. Before opening
the cover, the SLS78/R must be disconnected from power. Where required the cover
contact (yellow/green cable) must be removed and replaced again before re-mounting the
cover.
The PG cable glands are suitable for cables with a diameter of 7 to 10 mm. The minimum
conductor cross-section is 0.25 mm
2
.
Warning:
The PG cable glands and the housing cover must be properly screwed tight so that the
specified IP 65 protection rating for the housing is guaranteed.
The union nut must be screwed tight with the plug configuration (in acc. with DIN 43651).
The sequence control must be connected with the relay outputs in accordance with the
connection graphics. According to the applicable regulations for type 4 AOPDs both
make contacts must be used for the safe switch-off of the technical device.
The contacts must be protected with a fuse (3 AmT).
