Function description
Operating Manual PNOZ s50
1002194EN02
15
INFORMATION
At the safe inputs Y10 and Y11 / Y20 and Y21, a "0" signal must be present
before the corresponding output O1+/O1 / O2+/O2 can be switched by a
"1" signal at both inputs. If this is not the case, a fault is signalled and the
LED "Out 1" or "Out 2" flashes (the diagram below illustrates this, using the
dualpole input Y10/Y11 and the output O1+/O1 as an example).
O3
Fig.: Startup condition for inputs Y10/Y11
INFORMATION
Please note: Inputs Y10/Y11 switch output O1+/O1; inputs Y20/Y21 switch
output O2+/O2. In the event of a fault, however, both outputs will switch off.
Status outputs O4/O5 also switch off, irrespective of the switch status of the
inductive load. At the time an input, e.g. Y11, is switched on, if the other in
put, e.g. Y10, is not at "0", the fault signal output O3 will signal a fault via a
"0" signal.
After the output O1+/O1 and/or O2+/O2 is switched on, the voltage U
B1B2
is available for a
configurable overexcitation time U
over
. Once the overexcitation time t
over
has elapsed, the
voltage is reduced through pulse width modulation (PWM). The overexcitation time t
over
and
the reduced voltage U
Avg
are configured via the display.
INFORMATION
The overexcitation time t
over
can also be switched off for each power circuit.
In this case, the output voltage of the power circuits O1+/O1 and/or O2+/
O2 equals the supply voltage U
B1B2
.
