Installation
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8.2
Mechanical Installation
WARNING!
Before installing the Safe Box, the technician has to make sure that the nominal speed stated
on the LIMAX Safe SG/SC type label matches the nominal speed of the elevator. If this is not
the case, the Safe Box must not be used for this elevator. A Safe Box with matching nominal
speed has to be acquired instead.
The Safe Box is mechanically installed on top of the elevator cabin. The position must allow for the teach-button
to be operated and for the LEDs to be visible through the window (sight glass).
The sensor LIMAX33 RED/LIMAX44 RED and the magnetic tape are mounted according to the LIMAX33
RED/LIMAX44 RED operation/installation manual.
The circular male connector at the end of the cable of LIMAX33 RED/LIMAX44 RED has to be connected to the
corresponding female connector on the Safe Box.
The cables for power and I/O (
cable), safety circuit and actuators (
cable) as well as the cable connect-
ing the LIMAX33 RED/LIMAX44 RED with the Safe Box have to be laid in a mechanically protected way.
Plugging and unplugging of the sensor LIMAX33 RED/LIMAX44 RED is not allowed while the Safe Box is con-
nected to any power supply (regular or emergency battery back-up). Otherwise damage to the electronic parts
of the Safe Box or the LIMAX33 RED/LIMAX44 RED may be the result.
8.3
Electrical Installation
Before the electrical installation can begin, the complete elevator unit has to be de-energized.
8.3.1
Protection against electrical shock
For protection against electrical shock by direct contact, the housings of the Safe Box and the LIMAX33
RED/LIMAX44 RED each have a protection class of IP54.
For protection against electrical shock by indirect contact, the housings of the Safe Box and the LIMAX33
RED/LIMAX44 RED have an earth connection. These need to be connected to the protection earth
8.3.2
Options regarding the electrical installation
There are three options regarding the electrical installation:
1.
with electronically trigger of the speed governor (LIMAX Safe SG)
2.
with electronically trigger driving a suitable safety gear (LIMAX Safe SG)
3.
neither triggering speed governor nor safety gear (LIMAX Safe SC)
The variant “3.” may only be selected if the motor brake of the elevator system is an A3 certified safety brake
(EN81-20 §5.6.7). If this variant with an electronically trigger of speed governor or safety gear is chosen, it is
mandatory to use the LIMAX Safe SG variant in order to fulfill full functional safety.
If the variant “3.” is chosen, it is mandatory to integrate SGC in the safety circuit in order to fulfill full functional
safety. Use LIMAX Safe SC in this case, LIMAX Safe SG would not work.
The figures in section
8.3.4 and
8.3.5 show the circuit diagrams to connect LIMAX Safe to the elevator
system.
