Safety engineering
Functional test
Monitoring the safety function with a PLC
11
11.4
11.4.3

11.4−4
EDSVF9383V EN 7.1−04/2012
In the following we will show you a possibility of parameterising a digital
output, so that a conclusion with regard to the motor current is provided.
Sequence Parameter Note
1.
Configure function block CMP3
(comparator)
l Connect CMP3−IN1 to
MCTRL−IACT
C0693/1 = 5004
l Connect CMP3−IN2 to
FCODE−472/1
C0693/2 = 19521
l Configure the function IN1 < IN2 C0690 = 3
2. Configure output signal of CMP3
l Connect DIGOUT4 to CMP3−OUT
C0117/4 = 10660
3.
Enter function block CMP3 in the
processing table
l Select a free space in the
processing table
In the Lenze setting, for instance
space 2 of the processing table is
free
C0465/2 = 10660
4. Set the current threshold
l Set the current threshold for
I
rated_FI
to 2 %
C0472/1 = 2.00 I
Motor
= 0 ® DIGOUT4 = HIGH
I
Motor
¹ 0 ® DIGOUT4 = LOW
Example: Parameterising a
digital output
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