Technical Data
Instruction handbook
Safe STO logic
BM5-SSL
Document No. 5.18007.02
25
4
4.3
Requirements for control voltage / 24 V power supply
Only 24 V power supply units which comply with the SELV/PELV standards of EN 50178.
are permitted for control voltage.
Control voltage
+24 V -15 % / +20 %
4.3.1
Mechanical characteristics
Dimensions
Housing:
170 mm x 80 mm x 27 mm
Housing with mounting plate:
210 mm x 80 mm x 27 mm
Weight
ca. 460 g
Mounting orientation
top
IP code
IP20
4.4
Functional safety
This chapter describes parameters in relation to functional safety. First of all, in
accordance with IEC 61508, safety means that a system is free of unwarranted risks.
Functional safety is the part of the overall safety, which ensures that a safety system's
response to its input conditions is free of errors. Internal safety-related device errors must
be detected and brought into a safe condition in the process.
4.4.1
Safety-related characteristics
The following table lists the safety-related characteristics of the
Safe STO logic
for an
operation of 20 years. Safety-related parameters of local I/O terminals and decentralized
components can be found in the applicable documentation.
CAUTION!
If the user calculates his safety application with 20 years for the specified values, the
BM5-SSL
will have to be decommissioned and sent back to the manufacturer within
not more than 20 years. The user cannot perform a proof test.
Summary of Contents for BM5-SSL
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