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Safety Functions
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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 /
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
Name
Norm reference
SIL
OC SR1 (SR2) eSGC Comments
Overspeed
(pre-tripping)
EN81-20 §5.6.2.2.1.6.a.)
SIL 2
X
Overspeed (final-
tripping)
EN81-20 §5.6.2.2.1.1a.)
SIL 3
X
X
Final limit switches
EN81-20 §5.12.2.3.1.b.)
SIL 1
X
deceleration control,
synonym: ETSL
EN81-20 §5.12.1.3
SIL 3
X
Door bridging (mon-
itoring the levelling
and re-levelling)
EN81-20 §5.12.1.4
SIL 2
X
(X)
Unintended car
movement
EN81-20 §5.6.7.7
SIL 2
X
X
(X)
X
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)
SIL 2
X
Supervision on
inspection direction
No norm reference
SIL2
X
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
No SIL
X
This function is fulfilled by lift control
LIMAX33 CP-00 only supervises the
speed adjusted in the configuration
Overspeed inspec-
tion (final tripping)
No Norm reference
SIL3
X
X
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
SIL 3
X
X
Working platform
EN81-20 §5.2.6.4.3.1 b.)
SIL 3
X
X
Remarks concerning the table above:
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