Wire Break Detection; Table 27: Wire Break Detection - WAGO 753-668/000-004 Manual

64 Functions
4.13

Wire Break Detection

The lines to the analog inputs can be monitored for wire breaks. The requirement
for this is that the parameter "Wire break detection" is set to the value
"Enabled". A wire break is detected within the error response time.
If you have set the "Wire break detection" parameter to "Disabled", then wires
are not monitored for breaks by the F I/O module.
If a wire break is detected for an analog input, the F I/O module or the affected
input is passivated and the "Wire break" diagnostic message is output.
Wire break detection depends on the setting of the following parameters:
•
Analog value data format
•
Measurement range

Table 27: Wire Break Detection

Analog Value Data
Format
RIOforPA
Siemens S7 with fixed
substitute values
Siemens S7 with
parameterizable
substitute values
The settings are made via the "Wire Break Detection" parameter, which is
described in Section "Commissioning" > ... > "Setting Parameters".
Manual
Version 1.0.0, valid from HW/SW Version 01/01
753-668/000-004 4FAI 0/4-20 mA Diff PROFIsafe
Measurement Wire Break Detection Depending
Range
0 ... 20 mA
4 ... 20 mA
0 ... 20 mA
4 ... 20 mA
Optionally enabled or disabled
0 ... 20 mA
4 ... 20 mA
Optionally enabled or disabled
WAGO-I/O-SYSTEM 750
on the Parameters Set
Disabled
Enabled by default
Enabled by default