12 Safety Function Check
In this chapter is described how the auditor can check LIMAX Safe SG/SC at initial and annual examination.
12.1 Software Identification
The lift control is able to read both the ROM-CRC of the Safe Box software as well as that of the LIMAX33
RED/LIMAX44 RED via CANopen and display them.
The auditor displays the ROM-CRC of both the Safe Box and the sensor. The auditor com-
pares each of these with the respective CRC noted in the certificate to verify the correctness of
the software version.
12.2 Correct Wiring due to Type SG/SC
It is checked if the wiring due to chapter 8.3 is correct.
Especially it has to be checked if SGC is wired correctly due to the type (SG or SC). The type is noted on the info
label (see Figure 2).
For LIMAX Safe SC: SGC in the safety circuit on a non-bridgeable spot. Input SGC-FB not wired
For LIMAX Safe SG: SGC wired in order to act a suitable safety gear directly or indirectly by acting a blocking
device on the speed governor. Input SGC-FB wired to the external feedback contact
12.3 Door Monitoring and Capacitive Coupling
The test for capacitive coupling is already described as a preliminary test for the installation (see 9.3.4).
This test is repeated by the auditor.
12.4 Examination of Door Switches and Locking Switches
The door and locking switches are opened one after the other. NOC must follow the respective state. The optical
indicator (see chapter 9.1) can be used for this purpose. In reaction to the opening / closing of the switches
there must be a change in status (ON OFF, OFF ON).
12.5 Set Nominal Speed
The nominal of LIMAX Safe SG/SC is noted on the specifications plate. It must fit the nominal speed of the lift.
The nominal speed of the Safe Box has to be read out via CANopen. It must also match the speed noted on the
plate. It is also possible to read out pre-tripping and final tripping speed via CANopen for informative purpose.
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