72
Festo — VTSA-F-CB — 2021-06a
Malfunctions
Module parameters–monitoring CPX module
Setting
Selection via software
Selection via parameter
F no.
1)
4828 +
64m
Bit
7
6
5
4
3
2
1
0
Valve undervoltage (U
VAL
)
Deactivate diagnostics
No diagnostics
+ 0
0
Activating diagnostics
Diagnostics (default)
+ 0
1
Short circuit at the valve (SCV)
Deactivate diagnostics
No diagnostics (default)
+ 0
0
Activating diagnostics
Diagnostics
+ 0
1
1) Function number
è
Description of automation system CPX-E; m = module number (counted from left to right, starting from 0)
Tab. 47: Module parameters–monitoring CPX module
9.4
Duct Parameters
Description of the duct parameters
è
Description of the CPX system (CPX-SYS -...).
Wire Break Diagnostics
The parameter ‘Wire break diagnostics’ defines whether the diagnostics for the input signals must be
activated or deactivated with regard to a shortfall of the input current.
When the diagnostics are activated, the error at an input current of
<
1.2 mA will be sent to the bus
module and displayed with the error LED on the module.
10
Malfunctions
10.1
Diagnostics
Specific errors of the pneumatic modules are reported or suppressed depending on the parameterisa-
tion.
Depending on the module parameterisation, the errors are reported to the bus node and forwarded to
the higher-order controller.
The errors are displayed on the valve terminal via error LEDs. Errors can be evaluated via the CPX
terminal using the FMT (Festo Maintenance Tool) diagnostic software.
Possible errors and messages:
–
Error: undervoltage of valves (U
VAL
)
–
Error: wire break (Open Load)
–
Error: short circuit at valve