Festo CMSH - Page 69

Festo — CMSH — 2021-10
Malfunctions
69
ID Message NAM
UR
1)
Possible cause Notes/remedies
416 Initialization failed:
Timeout control
parameter
–
Increased friction with
drive or process valve
–
Fluctuations in supply
pressure
–
External potentiometer
outside specification
–
Operation of drive and/or
process valve out of speci-
fication
–
Repeat initialisation.
If the initialisation
repeatedly fails, con-
tact Festo Support
è
www.festo.com/sp.
–
Service drive or process
valve.
– Check supply pressure.
–
Check specification of the
external potentiometer.
790 Setpoint signal below
valid range
–
Setpoint signal below
3.8 mA
–
Check analogue input
signal.
791 Setpoint signal above
valid range
–
Setpoint signal above
20.5 mA
–
Check analogue input
signal.
798 Supply pressure too
high
–
Supply pressure above
8 bar
–
Check supply pressure.
799 Supply pressure too
low
–
Supply pressure below
1.4 bar
–
Clogged filter
–
Check supply pressure.
–
Check filter.
828 Temperature in
device too high
–
Temperature above 80 °C
–
Media influences or envi-
ronmental influences
–
Check operating condi-
tions.
829 Temperature in
device too low
–
Temperature below -40 °C
–
Media influences or envi-
ronmental influences
–
Check operating condi-
tions.
918 Above defined supply
pressure limit
2)
–
Set threshold value
exceeded
–
Check supply pressure.
–
Adjust threshold value if
necessary.
919 Below defined supply
pressure limit
2)
–
Set threshold value under-
shot
–
Clogged filter
–
Too many consumers on
the compressed air line
–
Check supply pressure.
–
Adjust threshold value if
necessary.
–
Check filter.
–
If necessary, install buffer
volume.