Datasheet

MACX MCR-UI-UI-UP(-SP)(-NC)
104247_en_01 15
PHOENIX CONTACT GmbH & Co. KG • 32823 Blomberg • Germany • Phone: + 49 5235 3-00
PHOENIX CONTACT • P.O.Box 4100 • Harrisburg • PA 17111-0100 • USA • Phone: [phone]
www.phoenixcontact.com
9.7 Repair
The devices have a long service life, are protected against
malfunction, and do not require maintenance. However, if a
device should fail, send it back to Phoenix Contact
immediately. The type of malfunction and possible cause
must also be stated.
Please use the original packaging or other suitable safe
packaging when sending devices back for repair or
recalibration.
Phoenix Contact GmbH & Co. KG
Abteilung Service und Reparatur
Flachsmarktstr. 8
32825 Blomberg
GERMANY
9.8 Standards (SIL 2)
The isolating amplifiers are developed and tested according
to the following standards:
9.9 Abbreviations
EN 61508:
2001
Functional safety of electrical/electronic/
programmable electronic safety-related
systems
EN 61326-1:
2006
Electrical equipment for measurement,
control and laboratory use – EMC
requirements
IEC 61326-3-2:
2006
Electrical equipment for measurement,
control and laboratory use – EMC
requirements – Part 3-2: Immunity
requirements for safety-related systems
and for equipment intended to perform
safety-related functions (functional
safety) – Industrial applications with
specified electromagnetic environment
Abbreviation Meaning
DC
D
Diagnostic
Coverage of
Dangerous
Failures
Diagnostic coverage:
DC
D
= λ
dd
/(λ
du
+ λ
dd
)
HFT Hardware Fault
Tolerance
Hardware fault tolerance:
Ability of a function unit to
continue with the execution of a
demanded function despite
existing errors or deviation
λ
d
Rate of
Dangerous
Failures
Proportion of dangerous
failures per hour
λ
dd
Rate of
Dangerous
Detected
Failures
Proportion of detected
dangerous failures per hour
λ
du
Rate of
Dangerous
Undetected
Failures
Proportion of undetected
dangerous failures per hour
λ
s
Rate of Safe
Failures
Proportion of safe failures per
hour
MTBF Mean Time
Between
Failures
Mean time between
consecutive failures
PFD
avg
Average
Probability of
Failure on
Demand
Average probability of failure on
demand of a safety function
PFH Probability of a
Dangerous
Failure per Hour
Probability of failure per hour
for the safety function
SFF Safe Failure
Fraction
Proportion of safe failures:
Proportion of failures without
the potential to set the safety-
related system to a dangerous
or impermissible function state
SIL Safety Integrity
Level
International standard
IEC 61508 defines four
discrete safety integrity levels
(SIL 1 to 4). Each level
corresponds to a probability
range for the failure of a safety
function. The higher the safety
integrity level of safety-related
systems, the lower the
probability that the demanded
safety functions will not be
performed.