F 3334 (0626)
239
Planning notes
– In case of line monitoring the appertaining function blocks HB-BLD-3 (for single channel
operation) or HB-BLD-4 (for redundant operation) enable enhanced configuration possibil-
ities for the module.
– The extension of the time for the inrush current for lamp loads by the appertaining function
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 a minimum load of 10 mA. Line 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.
– At the same time only 2 channels may be operated with the max. load (2 A). If the load is
up to max. 1 A, all channels may be operated at the same time.
– In one I/O subrack max. 10 output modules with nominal load may be used.
– The outputs can be connected in parallel without external decoupling diodes.
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.
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.
In conjunction with certain 25 W lamp types problems may occur
caused by too high inrush current.
To prevent this at building block HB-BLD-3 (HB-BLD-4) at input
"INRUSH CURRENT IN ms" a time between 1 to 50 ms might be set
to suppress the fault signal. The duration of the test then will be
exceeded to the maximum of the entered time if this input is allocated.
Since edition (AS) 03 a resistor 1
Ω / 5 W must be connected in series
to the lamp.
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