F 3349 (0641)
258
Planning notes
• In case of line monitoring the appertaining function blocks HB-BLD-3 (for single chan-
nel operation) or HB-BLD-4 (for redundant operation) enable enhanced configuration
possibilities for the module.
• The extension of the time for the inrush current for lamp loads by the appertaining func-
tion block is valid for all channels. So inductive and lamp loads may not be operated on
one module at the same time.
• The line break monitoring requires an output load of at least 10 mA.
• The short-circuit and line break can be evaluated in the user program as line faults by
means of the function blocks HB-BLD-3 or HB-BLD-4. The evaluation of the signal “line
break” is made up to SIL 1.
• The outputs of the module and their supply voltage must be connected with
two poles.
The use of common lines can produce coupling loops with interferences, leading to a
module fault or a failure of the safety shutdown of the outputs.
• The outputs can be connected in parallel without additional external decoupling diodes.
• An external short-circuit of a channel does not trigger the integrated safety shutdown,
i.e. the remaining channels continue their function.
• If the line is longer than 10 m or if a power supply unit not manufactured by HIMA is
used, for a faultless operation with 48 V the supply voltage must be filtered with an
additional module Z 6019.
• Lines for outputs not used may not be extended to the plant without any terminal loads.
• In one I/O subrack max. 10 output modules with nominal load may be used at the same
time.
• At maximum power dissipation a forced cooling with a fan module is required.
Note for the redundant use of modules
• In case of a line short-circuit the double current can flow, until this line short-circuit is
diagnosed.
• In case of a line break the required minimum current is twice the value (20 mA) to pre-
vent an indication of a line break.
The function block HB-BLD-3 (for single channel operation) or HB-
BLD-4 (for redundant operation) must be used for all applications with
the module.
Note The connection of capacitive loads is not permitted. A length of the
connection line up to 3 km is possible. The line capacity, however, is
limited to a maximum of 1
μF.
With an interruption of the supply line L- the safe shutdown of the out-
puts is no longer ensured.
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