Elgo LIMAX33 CP-00 SERIES User Manual

Functional Safety
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Subsystem
Diagnostic Measurement
DTI
Comments
Digital inputs
(INSP., UP, DOWN)
Pulses are added to the input-signal (in
case of High-level of input-signal
10 ms
Digital inputs
(RESET)
Defined operation pattern
n. a.
Diagnostics only possible
(and necessary) when inputs
are actuated
OC
Check of the force guided feedback
contacts
24 h
If OC has not been opened regular
by CANopen-commend from lift
control (for the purpose or relay test
) , the LIMAX33 CP-00 will open
the OC compulsorily latest at next
stand still after 24h for a short time
(for purpose of relay test)
SR1/SR2
Check of the force guided feedback
contacts
n.a.
SR1 and SR2 must open before next
lift travel, otherwise UCM would
appear. If opening fails, OC opens
and lift travel will be prevented.
Therefore SR1 and SR2 are tested
before each lift travel
eSGC
Open eSGC for a short time and check
if the voltage on SG_OUT goes down.
10 s
The duration of the opening of
eSGC is very short (<<1ms) , so
that the connected braking element
would not trip. The test is.
The test is carried out alternately in
the A-channel and B-channel: A-
channel test, 5s later B-channel
test, another 5s later B-channel test
and so on…
Voltages
Overvoltage / EMC protection
(continuous)
Voltage supervision
10 ms
16.2 Demands of EN 61508-2, Annex D2
Table 29: Demands of 61508
Ref. 61508
EN 61508 demand
Value, description of references to other chapters
D2.1 a.)
Functional description
 11, 12, 13
D2.1 b.)
Identification of configuration
 7.1
D2.1 c.)
Constraints for use
 8
D2.2 a.)
Kinds of undetected failures
Safe failures (relays open by fail)
Dangerous failures (relays closed by fail)
D2.2 b.)
Rate of failures dependent on the kind
(refer to a.)
Safe failures 
S
, see footnote 1,
dangerous failures 
D
, corresponds to PFHD, refer to Table 26
D2.2 c.)
Kinds of failures detected by diagnostics
Safe failure (relays open by fail)
D2.2 d.)
Kinds of failures of diagnostics
Safe failure (relays open by fail)
D2.2 e.)
Rate of failures concerning c.) and d.)
Summarized to one value 
DD
(because reaction of the system is
the same): 
DD
= 
D
- 
Du
, the value is mainly determined by the
subsystems “position” (2 times), “logic” (2 times) and “relay OC
resp. eSGC” (6 times). Because the high diagnostic coverage 
DD
is approximately equal to
D
and therefore the value amounts to:
12927Fit (
D
values of the single subsystems added, ref Table
30).
D2.2 f.)
Diagnostic test interval
Refer to Table 28
1
Rate of undetected safe failures
S
(relay open by fail) is mainly determined by 
S
of the relay and therefore amounts to
about 18000 FIT (8 times 
S
of one relay).

Elgo LIMAX33 CP-00 SERIES Specifications

General

Brand	Elgo
Model	LIMAX33 CP-00 SERIES
Category	Measuring Instruments
Language	English