13 Safety Functions
13.1 Safety Function Configuration
The safety functions LIMAX33 CP-00 can be adapted to the needs of the customer. The behavior of some safety
functions can be changed by adapting configuration or settable parameter 14.1 / 14.2.
And most of the safety functions ( 14.1.2) can be completely disabled because:
The function is not required for the lift (e.g. ETSL is not needed if buffers are designed for nominal
speed or pre-triggered stopping system is not needed in case of enough head/pit clearance).
Or the customer wants to solve some safety functions externally (e.g. if the
mechanical speed governor / mechanical tripping of safety gear is kept, a LIMAX33 CP-00 with safety
function “overspeed final tripping” = disabled may be used).
13.2 Safety Functions after Commissioning
After correct installation and commissioning (LIMAX33 CP-00 is in Normal mode
11.1), the system fulfils the
following safety functions:
Table 13: Safety Functions after Commissioning
Overspeed (final-
tripping)
deceleration control,
synonym: ETSL
Door bridging (mon-
itoring the levelling
and re-levelling)
Inspection limit
switches
EN81-21 §5.5.3.4, / §
5.7.3.4 (SIL2); resp.
EN81-20 §5.12.1.5.2.1 g.)
(No SIL)
Supervision on
inspection direction
In order to complete safety of
direction dependency of “inspection
limit switches”
Overspeed inspec-
tion (pre-tripping)
EN81-20 §5.12.1.5.2.1 e.)
Please note the comment
This function is fulfilled by lift control
LIMAX33 CP-00 only supervises the
speed adjusted in the configuration
Overspeed inspec-
tion (final tripping)
This is in order to ensures the brak-
ing distance if “pre-triggered stop-
ping system” trips. Therefore SIL3.
Pre-triggered stop-
ping system
EN 81-21 §5.5.2.2 /
§5.7.2.2
Remarks concerning the table above: